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Dry Dock / Shipyard: Builds & Questions => Pleasure boats, Sports, Race, Power and Leisure Boats: => Topic started by: martno1fan on February 22, 2007, 10:43:55 AM

Title: new petrol powered deep v mono scratch build!!
Post by: martno1fan on February 22, 2007, 10:43:55 AM
Hi guys i just started my new build project ,its a 48" deep v mono hull made from plywood.Its done from free plans available from various sources and will be powered by a 28 cc strimmer engine with a walbro carb fitted.The hull will be epoxy coated outside to seal it and some glass tape and epoxy will strengthen areas in need of it like engine rails etc.Let me know what you think so far ,ive only dry fitted the rails and bulkheads togethr to check things fit before i start gluing .I will also be drilling a few holes to lighten up the rails and bulkheads.The boat will be surface driven using a flex cable connected to a stainles steel stub shaft that will run in a strut on the transome using a brass ferrule to join the two.I will be using an offset rudder too and the prop is a prather s280.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: omra85 on February 22, 2007, 10:21:42 PM
Looks like fun.  My Avatar is a 48" Challenger but only has a 7.5cc nitro engine in it. I think I could just squeeze a sparky into it but might be short of headroom. :D
Its MANY years since I built a wood boat (my driving style favours a heavier material - but total stainless steel boats are banned, so I make do with GRP) ;D
Keep us posted on the progress.

Danny
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on February 22, 2007, 10:36:08 PM
I love wood so its fun for me to build but i cant wait to get her finnished and on the water ,a mate has this same engine and while its not a speed demon for a 15 quid ebay bargain brand new it sounds like its gonna be good his was gps,d at 35 in 12" chop with a walb carb same as mine but a can muffler.Im having a pipe made by my mate who makes his own exhausts for 2 stroke bikes for the track so should work  he seems to know what hes doing lol.Hopefully with the pipe and a few mods here and there i could get nearer the 40 mark so that would be more than enough for a fun boat .Engine sounds better allready just with the walb carb fitted.More pics to come,nice boat by the way.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: omra85 on February 23, 2007, 08:37:16 PM
I presume you've already found it , but if you haven't DM's site gives dimensions for width of cones, and with the application of a ruler to the screen, the rest can be worked out easily. ;)
http://www.prestwich.ndirect.co.uk/gaspipes.htm (http://www.prestwich.ndirect.co.uk/gaspipes.htm)
He also provides a good bit on the theory of pipes at
http://www.prestwich.ndirect.co.uk/tunedpipetheory2.htm (http://www.prestwich.ndirect.co.uk/tunedpipetheory2.htm)
theres also a Walbro carb setup sheet in the same section, although it sounds as if you don't need it  :D
If you can get it to 40 (hope you are talking MPH not these new fangled kilocycle things) you'll be welcome to come and THRASH mine ;D

Go fast.....er

Danny
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on February 24, 2007, 08:24:51 AM
Thanks for the links i have daves site allready in my favourites!!,yes i meant 40 mph but that might be a bit hopefull with this engine but with mods to the ports who knows.35 sounds ok to me for a no name weedy so it will be a fun boat to drive hopefully.Where do you run your boat mate? im in blackpool by the way.I should get the rails glassed in today and the sides on hopefully so ill keep you posted.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on February 24, 2007, 01:38:52 PM
Heres a cpl of pics of the sides glued in place ,im just about to glass the rails in and test fitted the engine to see how she fits PHEW just fits in there engine goes nice and low which is a good thing now all i need is to make the mounts and attach the rubber feet to it theres just enough room as the bolts where ill mont the engine have enough room either side.the front mount will fit on the red shroud for the clutch ,thats how a mate did his using this engine and it works ok .
Title: Re: new petrol powered deep v mono scratch build!!
Post by: BJ on February 24, 2007, 03:01:55 PM
Have you heard of Ian Williams Tuning? May be not quite what you want but there is a program that you can run - see the "Free Download" . The text line is about midpage, look for; We now have a simple 2 stroke expansion chamber design program.   Free download here
Site is http://www.iwt.com.au/MOTA.HTM (http://www.iwt.com.au/MOTA.HTM)

Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on February 24, 2007, 04:12:57 PM
Thanks for the link mate im not great with engines to be honest,my mate mods 2 stroke bikes and hes building me a tuned pipe for this from alluminium i will run it as it is for a while then maybe get him to mod the ports etc later on.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: omra85 on February 25, 2007, 03:11:03 PM
Hi Martno1fan (or may I be less formal and call you Mart)
Neat looking engine and looks to fit a treat!  How are you cooling it? It looks as though a water jacket might be difficult so I guess you'll be sticking to air cooled.  It will give you a good excuse for not slowing down ;D
When I buy racing engines, I am too tight to wear them out just pottering round the club lake so tend to just set them up and stick them back in the car (after answering the obligarory questions from local children - "How fast does it go?" and "How much is it to buy?" ;D
I run most weekends wherever the races are ;)  This year its Torquay, Bristol, Telford, Stevenage, Tamworth - home club, Tredegar (Mid Wales), Burton on Trent, Weymouth, Milton Keynes, Eastbourne, and Lake Windermere.

I don't know anyone who races from Blackpool and "DM" is not a "real" offshore racer, he mainly does World Champs and big internationals :D
Given the length of pipe you'll need (12 - 15K rpm??), it looks as though you'll end up with a LOT of pipe hanging out the back :D
Keep up the good work
Danny
 
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on February 25, 2007, 04:49:05 PM
Hi Danny ive been called much worse lol hehe,yes it will be air cooled which wont be a problem as it will be run open hatch maybe just a screen with a few air holes if needed as for the pipe thats not my department my mates sorting that out,as for revs i dont think thats a problem this thing revs pretty well and my mate listened to it on video and reckons it sounds pretty good.although the carb isnt set up properly yet but ill do that when i hit the water. ill probably run it with the can muffler for a while till he gets my pipe done.the pipe will be ali and hes hydroforming it for me.the engine isnt fixed in yet its just sat in there to get an idea of how it fits in the boat.
mart
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on February 25, 2007, 05:10:58 PM
hi heres a link to my engine running let me know what you think.also feel free to check out my other vids of my lads pt boat i scratch built him and my sail boat i also scratch built.
http://http://media.putfile.com/boat-engine
Title: Re: new petrol powered deep v mono scratch build!!
Post by: omra85 on February 25, 2007, 05:50:35 PM
Good videos Mart
Lovely tickover - that engine will just love a decent pipe on it (then you'll really hear it rev)
So - I've "found" HIS secret practice lake :o  How does he get a sparky to go that fast!!! I still say that anything more than 2" waves will have it over though.  The World Champs are ALWAYS held on specially designed FLAT lakes, so he should be alright :D
D
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on February 25, 2007, 08:40:00 PM
Why you asking me how he gets em to run that fast lol?,7.3hp that engines putting out according to his site.I doubt hed be running it that fast offshore either lol but 5 world titles speak for themselves i guess,mind you at  what that engine costs ill stick with my chinese no name weedy for a bit longer haha.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on February 26, 2007, 04:36:31 PM
few more pics for yaa,the decks not fastened on just tacked and taped hows she looking?.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: omra85 on February 26, 2007, 06:43:46 PM
Bulkheads vertical, hull symetrical - aarrgh, I'm having none of it ;D
I'll be wodering why I spend 140 on a plastic one soon!

Hope those sides are 50mm at the widest point or you won't be able to race it in OMRA (2006 rule)  :(

Looking good so far. Keep it up!
Danny
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on February 26, 2007, 07:47:52 PM
Bulkheads vertical, hull symetrical - aarrgh, I'm having none of it ;D
I'll be wodering why I spend 140 on a plastic one soon!

Hope those sides are 50mm at the widest point or you won't be able to race it in OMRA (2006 rule)  :(

Looking good so far. Keep it up!
Danny

Mate when you say widest point of the sides which side do you mean the side of the boat as in 50 mm high? or the deck sides where engine bay is?.Anyway the sides ar 60 mm high at highest point and the deck sides are a little under 100 mm so either way im good to go!! one problem though i cant afford to go racing nor can i travel to all the venues lol so ill just have to play on my own for a bit yet !!.The boats 48 " long x 15 1/4" wide thats 1,220 mm x 390 mm give or take a cpl of mm lol.hull weighs under 6 lb right now.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: omra85 on February 26, 2007, 09:11:56 PM
Now, I know I'm going to sound a right prat to the ex mariners but what the h*ll,
its the bit between where the bottom of the hull (chine?) meets the sides to the bit where the sides join the deck.  I think it might be called "Freeboard" but I'll keep my head down just in case :D
Anyway as long as it's 50mm at the widest (deepest?) point, it's OK. Sounds as if yours would be OK anyway.
It was originally brought in to stop out-and-out multi boats entering, but DM took it personal because his newly designed "offshore" boats didn't qualify as they have hardly any 'freeboard'.
At 15.25" (how DO you get fractions on this keyboard?) wide, it should be MEGA stable!
Sorry you won't be doing 'the circuit' - YET ;)  but at least try to get to Windermere on 22/23 September, its a great venue and it's "just up the road" from you :D
Danny
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on February 26, 2007, 10:47:17 PM
yep free board is right lol racing isnt my thing to be honest but ill see what i can do about the windermere thing.i guess i could just watch you guys lol.maybe ill bring the boat and find a quiet corner all to myself after all its a big lake hehe.i know nothing about omra or racing and there are no other gas boats that i know of local to me to race anyway.if this boat runs well i will be building another so me and my lad can have some fun together .who knows maybe someone else will want one built lol.i love building boats as when i left school i worked at a boat yard and qualified as a time served boat builder(shipwright)before moving on to been a joiner so i guess working with wood is in the blood now.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on February 27, 2007, 02:23:36 AM
Or blood on the wood?? :o

Hello Martin by the way.

What's happened to the cooling fan off the motor, or was there not one fitted when you got it? Think it may need one, unless you can get it  water cooled.

Hi Omra 85, had a look on the OMRA web site and did not notice a section for larger spark ignition engines - would a 26cc Zenoah in a Miami 55 qulaify for entry?

Sorry for going off subject a bit.

Cheers,

Glenn
 
PS, boat looking canny by the way Martin.
(Funny, there's a lad called martno1fan building something similar on the RC Universe forum - but his is running on propane I guess. Well, he said it was gas.)

Hehe - only winding you up...
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on February 27, 2007, 08:42:02 AM
Or blood on the wood?? :o

Hello Martin by the way.

What's happened to the cooling fan off the motor, or was there not one fitted when you got it? Think it may need one, unless you can get it  water cooled.

Hi Omra 85, had a look on the OMRA web site and did not notice a section for larger spark ignition engines - would a 26cc Zenoah in a Miami 55 qulaify for entry?

Sorry for going off subject a bit.

Cheers,

Glenn
 
PS, boat looking canny by the way Martin.
(Funny, there's a lad called martno1fan building something similar on the RC Universe forum - but his is running on propane I guess. Well, he said it was gas.)

Hehe - only winding you up...
the cooling fans fully intact no probs there mate!!,never heard of that guy dunno who he is lolol.dont know where your looking for the fan mate but its all there if you look closer hehe.maybe the clutch housing is obscuring the view lol.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on February 27, 2007, 11:12:56 AM
 8) Just my eyes then Martin, couldn't see the fan. Well that's OK then.

When's it going to be finished?

Got your PM by the way - wouldn't dream of it. Much.

Glenn
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on February 27, 2007, 11:27:10 AM
Glen not sure when it will be ready i still need a stuffing tube and servos and battery holder and batterys for it.apart from that i have all my gear.Im making my own rudder from ali billet but hopefully if i get enough time on her she could be ready for Aprill .
Title: Re: new petrol powered deep v mono scratch build!!
Post by: omra85 on February 27, 2007, 09:19:42 PM
Hi Glenn
The 26 in a Miami would be fine.  The 'D' class caters for spark ignition up to 50cc! A lot used to run the old Kawa 35s but many have now gone over to the 26's as the boats are smaller (under 60") and the speed is as good plus they're easy to tune.
If you look on the OMRA site - "2006 season", then "AA-D classes Championship Table" then scroll down to "D" class, you will see that there are 33 different racers all running sparkies :o
You can also look at "Photographs" then go down to "D" class - they are mostly 26's.
Go for it ;)
Danny
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on February 27, 2007, 11:06:24 PM
by the way danny you will know mr pope? he made a wise crack about one touch and my boat will disintegrate.cheeky sod if i come to windermere maybe ill give him a game of chicken i know whos boat will come off best lol.this thing will be stronger than a glass hull any day might be fun lol  ;D.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: omra85 on March 01, 2007, 08:47:01 PM
Oh yes, I know Gary!  He the current D class champion in OMRA (but if he's not reading this - it was a fluke - he won ONE race, came second once and got SIX thirds ;D )
As for it coming apart - they all do that if you hit them hard enough ;D  The secret is to stay out of the way, it took me 20 years to learn though ::)
I've managed to take some pics of my set ups.  They are on Photobucket. Hope this link works :-\
http://i176.photobucket.com/albums/w191/omra85/CMB45topSmall.jpg (http://i176.photobucket.com/albums/w191/omra85/CMB45topSmall.jpg)
Danny


Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on March 02, 2007, 01:47:02 PM
Cheers Danny,

I found it all on the OMRA web site in the end. I may well get my self registered and have a go, it would probably only be a goer for me to get to Windermere and Burton though due geography. Need to find some drivers to stick onto the top of my boat!! And one to stick behind the remote control too!! Take it most of you guys are running 40meg FM?

Hey there Martin, you can try some kevlar tape for reinforcing the joints, its about 11/2 inches wide and strong as a strong thing that has been pumping iron.

Having trouble cutting it with scissors!! That should stop it disintegrating. Think Gary was just trying to wind you up - guess it worked.

Glenn
Title: Re: new petrol powered deep v mono scratch build!!
Post by: kayem on March 02, 2007, 01:53:56 PM

Having trouble cutting it with scissors!!


Yes, you will find cutting Kevlar difficult. You either need some special shears (expensive), or you can improvise with scissors ground 'square', with no angle on the cutting edges. Kevlar isn't nice stuff to work with.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 02, 2007, 04:25:28 PM
Cheers Danny,

I found it all on the OMRA web site in the end. I may well get my self registered and have a go, it would probably only be a goer for me to get to Windermere and Burton though due geography. Need to find some drivers to stick onto the top of my boat!! And one to stick behind the remote control too!! Take it most of you guys are running 40meg FM?

Hey there Martin, you can try some kevlar tape for reinforcing the joints, its about 11/2 inches wide and strong as a strong thing that has been pumping iron.

Having trouble cutting it with scissors!! That should stop it disintegrating. Think Gary was just trying to wind you up - guess it worked.

Glenn

Glen i have rienforced all joints with glass cloth and this thing is strong!! mr Pope said he was joking but he came across as an ass!! if hed said it then made a joke fare enough but he only did that after several people told him off .anyway i dont care what he thinks or says so end of story,right back to my build ive put chines on and its epoxied now and ive made my own rudder from ali billet and some 3mm plate for the blade!!i also made the rear mount for the engine too see pics.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on March 02, 2007, 04:58:51 PM
 :) Aye, it's getting there now - thinking of staying in tonight and glassing in the rails for my engine re-mount. Wish I'd never started now, it was working. Might even get the deck fitted again. See how it goes. I hate fibre glassing though.

Hey ho.

It should be together shortly - might even take up OMRA85 and have a plod around Windermere in September with it.
I guess I can always have a practice with it in the sea - like you I am only about 1/2 mile from having wet feet, although 'tother side of the country. Keep going Martin, it's getting there now.

I am grinding my wifes kitchen scissors square tonight too - so you may not here from me for a while - depends on:
1. How soon she finds out
2. How soon the hospital release me when she has finished working on me!

Glenn
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 02, 2007, 07:28:51 PM
Hi Glenn ill get those plans off to you no worries,one question i put my rudder blade to one side of the hinge point about 2mm do you think it will make any difference? someone said it might but i thought not.Where abouts you from then im from yorkshire orriginally .I might see you at windermere lol .
Title: Re: new petrol powered deep v mono scratch build!!
Post by: omra85 on March 02, 2007, 10:16:21 PM
Hi Martin.
The 2mm should make no difference provided the rudder is vertical. If your not sure, post a pic.
I notice that you have a flat bottom :o on your hull.  Are you adding rails.  If not the boat will not lift easily.  This has the ADVANTAGE of adding stability but will also slow the boat due to increased surface area drag.  If you add rails, the hull lifts easier and becomes faster.  There are two ways to add rails, (normally using balsa strip of the wing trailing edge type) 1. step inwards which gives better lift but is more directional. Great on straights but difficult to control the turns, and 2. step outwards which gives less lift but better turns as it inhibits sliding - its also easier to mould when using grp.

(http://i176.photobucket.com/albums/w191/omra85/Hullrails.jpg)

Hope you're using epoxy with that Kevlar, it don't like polyester :D
A use woven glass tape, which I find is more than strong enough (but then I try to avoid other boats) ;D

Hi Glenn
Yes most run 40 meg with a few diehards on 27.  I've got a drawer full of little men, if you want some, PM me with your address and I'll stick a couple in the post - I paint a black bit on the top, call it a window, and now don't need little men ;D
Just to show I've had orange boats in the past (I'm better now) ::) here's a pic of me and Mrs 85 enjoying the clouds in Wales :D

(http://i176.photobucket.com/albums/w191/omra85/DannyLyndaboatsBryn3.jpg)

I know Martin's from Blackpool, where are you Glenn?
Keep smiling.
Danny
PS  If either of you test in the sea, totally LATHER your boat with WD40, plus spray it through your water outlets into the head, pipe, header etc.  The salt makes a right PIG of ally, brass and copper :(
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on March 02, 2007, 10:47:17 PM
Cheers Danny, I am just outside Newcastle, place called Whitley Bay. North Sea coast. Have got epoxy resin for using on my Tornado FSRV boat, did not know the epoxy would stick OK to the GRP on my Miami. Will give it a go on a test piece and leave the rails to the morning, see what happens overnight.

I'm afraid that I too currently have an orange boat, although there are plans afoot to remedy that fairly quickly when the boats finished again.

And I got caught grinding her scissors. Good idea about painting the black bit, will have to see if I can get away with it.

Cheers Danny / Martin.

Later
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 03, 2007, 08:41:57 AM
Hi Danny i will post a pic for you  one guy on rcu says it might make it hard to controll im not so convinced ,i understand it will not be turning the rudder evenly and in a bit of an arc but a cpl of mm surely wont make much difference.I could change it but that wont be easy but ill see what i can come up with.No i wasnt going to  be using rails on the bottom(strakes) this boat doesnt need them, i understand it can help keep things running straight but from what w3bby says his runs pretty well.I did think of adding one either side at the stern going about a 3rd the way along the hull maybe i could try that if i have enough of this traingular beading left.I used pine by the way if i add strakes should i put them halfway between the keel and the chines would that be a good place?.thanks for all the input mate.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on March 03, 2007, 10:04:16 AM
Hi Martin,

I think the idea of the rails from what Danny was saying was to make the boat quicker. Can only be a good thing.

G
Title: Re: new petrol powered deep v mono scratch build!!
Post by: omra85 on March 03, 2007, 08:46:57 PM
Hi Martin
Glenn is right - strakes (you learn a new word every day on here - and some of them are repeatable) ;D - are mainly for extra speed. Where they go varies but they are usually evenly spaced between the keel and chines. Most competition boats have them so they must be for something ;)

(http://i176.photobucket.com/albums/w191/omra85/StrakesfrontviewSmall.jpg)
(http://i176.photobucket.com/albums/w191/omra85/StrakesrearviewSmall.jpg)

These are two types, the white runs from the front to a staggered 'V' at the back.  This gives more ' slide' in the corners whilst creating a sort of 'planing flat' at the back for more speed ::) ???
The red one has them from a staggered front start right to the transom (which is supposed to prevent diving into waves) ??? :D

If you look at the photos of some of the fast multi boats on sale eg
http://www.iansboats.co.uk/ (http://www.iansboats.co.uk/)
and click boats, you will see the underneath of Ians Griffon :o

Go on - stick them on - you can always sand them off if you don't like them (especially if you've spent hours blending them in and painting them) ;D ;D

Danny

PS Ignore the grey 'modifications' to the red boat FOR NOW :D  I'll go into that when you're on the water!! ;D
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on March 03, 2007, 11:07:17 PM
Nice Wedge Danny. How much weight you running port side to counter the prop when it's out of the water?

You should see the bottom of my Tornado - there's a strange shape - I will take a photo to show you, if I can work out how to post it here.

Glenn.

PS Danny, you best get the boats off the bed before Mrs. 85 gets home, there may be trouble ahead...
Title: Re: new petrol powered deep v mono scratch build!!
Post by: omra85 on March 03, 2007, 11:20:45 PM
Hi Glenn
The red one is my old 3 1/2, it had 120 grams (1 1/2 strips) level with the tank front.  The last Tornado I had (yes - i admit it - I used to be a multi racer :-[ ) used to have 240 grams AND I had to put my own front wedge in!  The mark 1's didn't have a front wedge :o
I said to Mrs 85 "get under the covers and hold the front up to catch the light". She gave my a right slap and stomped out ;D
Danny
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 03, 2007, 11:39:23 PM
im undecided on the strakes as this hull handles very well without them ,its a scaled up version of the wildthing which is a nitro boat and it handles like on rails!!.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: omra85 on March 04, 2007, 02:30:41 PM
Leave them off for now then Martin.  If it handles and goes as fast as you want, then all OK.  If not, remember
A hull is just for racing - not for life ;D
You can always add bits as you go along.  See my scruffy red hull!!
Danny
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 04, 2007, 03:04:58 PM
Hi Danny i will add two small strakes at the transome about 16" long i was thinking of putting them half way between the keel and the chines what do you think?.Im mounting my rudder as we speak it will be offset to the right ,one thing i was thinking is how far from the transome do you put yours is 150 mm from rudder to transome ok?. Also where the flex comes out of the hull how much flex should i leave exposed between the ferrule that joins it to the stub shaft and the hull ? do i need to run the tube out a little so theres not too much flex showing or not?.I think there will be about 1 1/2" or so of flex showing where im mounting my strut.Im putting the rudder and prop so they are just about level with each other give or take a few mm.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: omra85 on March 04, 2007, 03:54:06 PM
Hi Martin
>i will add two small strakes at the transome about 16" long i was thinking of putting them half way between the keel and the >chines what do you think?
It might make it faster - think you can handle it? ;D  (Should be fine - nothing TOO severe)

>Im mounting my rudder as we speak it will be offset to the right ,one thing i was thinking is how far from the transome do you >put yours is 150 mm from rudder to transome ok?
The further out from the transom everything is, the stiffer (and heavier) the supports have to be. You can't have accurate steering if the rudder is waving about like a palm in the breeze ;D
My transon to rudder pivot post is 43mm and offset about 50mm.
This is the plan for the 43" which I have followed fairly closely.  I would imagine that yours would be very similar.(http://i176.photobucket.com/albums/w191/omra85/Challenger43plan.jpg)

>Also where the flex comes out of the hull how much flex should i leave exposed between the ferrule that joins it to the stub >shaft and the hull ? do i need to run the tube out a little so theres not too much flex showing or not?
The shaft tube should connect INTO the nose piece of the skeg.  There should be no flexi showing at this point!  The nose piece is about 15mm from the transom.  There is an argument that this distance should be greater and the tube fastened through the transom with silicon, to allow slight adjustment up or down of the skeg, but I have never found this necessary (provided your tube exits parallel with the keel and as low as possible)

>I think there will be about 1 1/2" or so of flex showing where im mounting my strut.
Any unsupported flexi will 'whip' and be out before you know it :'(  The brass/teflon shaft support tube should go from as near the flywheel as possible to as near to the prop drive dog as possible, in one piece.  You have to compromise at the back end as the stub shaft needs two lead plain bearings to keep straight. But the tube should go into the nosepiece.  See earlier photos.

>Im putting the rudder and prop so they are just about level with each other give or take a few mm.
That's where I've deviated from the Challenger plans as I feel they are better in line with each other. Anyway, the Aeromarine hardware I bought ended up like that and not like the plans ???

Time for some more photos from you, I think ;D

Danny
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 04, 2007, 06:25:50 PM
right ill move the rudder in abit ill cut the arm shorter it is stiff enough though its a solid peice of billet 8 mm thick by 24 mm deep.i cant put the tube into the strut as i have a ferrule that sits there to join the flex to stub i will make the tube exit the transome and about 2mm short of the ferrule as i read the flex tightens so you need a gap to allow for shrinkage!!.thanks for the help mate ill post more pics soon the cameras playing up.a mates making me a ferrule as we speak as the last one i bought was knackered the shaft hole was not straight it was 3 degrees offline just my luck.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: omra85 on March 04, 2007, 08:12:57 PM
>solid peice of billet 8 mm thick by 24 mm deep

So you don't want it to last then!! - that would turn the QE2 ;D
I know, you want to practice drilling and filing on it :P

Danny
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on March 04, 2007, 08:45:47 PM
Interesting drawing. You runnning a turn fin on the Vee hull Danny? Also, trim tabs - see you have four, just finished mounting two back on mine, gone for ones that are about 21/2" wide.

G
Title: Re: new petrol powered deep v mono scratch build!!
Post by: omra85 on March 04, 2007, 09:06:41 PM
Hi Glenn
Oh yes, a turn fin is essential on mine.  I tried running it with it lifted and it skittered all over the lake ;D
I only use one tab each side for fine adjustment, if I needed FOUR to set the running trim, I'd give up.
Danny

Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 04, 2007, 09:34:28 PM
>solid peice of billet 8 mm thick by 24 mm deep

So you don't want it to last then!! - that would turn the QE2 ;D
I know, you want to practice drilling and filing on it :P

Danny

yea well wait till you see the finnished boat you will wonder why you paid all that money for a glass boat and all that hardware lol!! ;D ill be taking orders whan im done hehe!! :D by the way im making trim tabs too theres no end to my talents lol.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on March 05, 2007, 11:31:10 AM
Hi Martin,

must be time for some more pictures of the updated progress?

Got my engine mount rails glassed in last night, all going well, until I got resin on the wifes dining table. Oops.

Next one is to refit the deck, I hate that job. Then just about done I think.

G
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 05, 2007, 01:10:40 PM
hi just been redoing the engine mount at the rear so i can get the engine lower in the boat.ill take pics when i get time to sort this camera out.weighed the boat with the hardware on and engine in and it cam to 13 lb so shouldnt be too heavy when its finnished.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 05, 2007, 02:36:41 PM
Hi ive mounted the engine in the boat and all the hardware is mounted on the transome now all i need to do is put the stuffing tube in when it comes and cut and fit my flex.As you will see i need to shorten the standoffs a lot on the strut and the rudder ,once i get my tube and ferrule i will then decide how much to bring it all nearer the transome.im not much for guessing so ill wait till i can see how much room i need to allow for the ferrule to fit .Hows she looking guys?,the engine fits nice and low but i will need to cut the bulkhead where the clutch housing is so i can get to things and mount my stuffing tube holder !!.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on March 05, 2007, 03:50:03 PM
Getting there. I have (hopefully) posted a couple of pictures to detaial for you the strakes and rudder on the Miami. Hope it hels you out.

G
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on March 05, 2007, 03:50:49 PM
Try again
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 05, 2007, 04:54:44 PM
hi mate i can see your rudder no second pic ?how do you like these graphics? a guy in states is doing me some for free!!hehe now i see yer second pic thanks.hope you like my colour scheme hehe one favour deserves another i guess but for him to do this for me is fantastic.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 05, 2007, 05:28:21 PM
a mate came up with this for me
Title: Re: new petrol powered deep v mono scratch build!!
Post by: omra85 on March 05, 2007, 06:34:04 PM
Nice graphics Martin.  You may find the "Fast and Furious" is already on an OMRA boat (can't remember who's) but it doesn't matter if there's more than one :)
Danny
Title: Re: new petrol powered deep v mono scratch build!!
Post by: Phantom1 on March 05, 2007, 06:41:53 PM
Cool graphics!! ;) and cool boat!
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 05, 2007, 07:27:17 PM
im glad you like it guys i found the graphics at the site linked but a guy in the states i did a favour is doing me some similar ill post pics soon of the exact design he came up with.by the way he will do them for a good price im told to anyone interested :)Phantome your boats are really nice too im afraid my fibreglassing leaves a lot to be desired .this is my first sparky and so far so good .
Title: Re: new petrol powered deep v mono scratch build!!
Post by: Phantom1 on March 05, 2007, 07:32:57 PM
Phantome your boats are really nice too im afraid my fibreglassing leaves a lot to be desired

Fair play for getting stuck in though!  If you or anyone needs any info/help with any type of grp mouldings i'd be glad to help, 18 years in the industry for my sins!

keep up the good work!
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 05, 2007, 09:41:27 PM
cheers mate but this boat is wood and epoxy coating on the outside and glass tape on the seams and engine rails.if i ever need a glass hull ill look you up  ;).
Title: Re: new petrol powered deep v mono scratch build!!
Post by: Phantom1 on March 05, 2007, 11:27:25 PM
Mart whats the overall height on that sparky?
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 06, 2007, 12:10:25 AM
the one in my boat or the zen? mines 7 1/2" its bigger than a zen and mines air cooled the zens are water cooled and a lot faster but mine will give me 35 mph a friend has the same one it cost me 15 quid on ebay never run.its a good engine for a fun sports boat for the money you cant go wrong for a first gas boat  ;D.i put a walb carb on mine and its given it a good boost ill open the intake alittle too thats hould help a bit also.a mates doing me a tuned pipe but ill run the can muffler for a while.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on March 06, 2007, 12:16:01 AM
How spooky that you should mention engine height Phantom. Have just refixed the motor in mine and then was gettign toward refixing the deck, tried the hatch and realised that the blooming engine is now about 3/8" taller than it was (New mounts). So now my little drivers are going to have to sit there with a spark plug cap next to them.

Wonder if I can turn it into an airscoop?

Glenn
Title: Re: new petrol powered deep v mono scratch build!!
Post by: omra85 on March 06, 2007, 01:21:04 PM
Paint a crash helmet on it and pretend it's a third crew ;D
Danny
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on March 06, 2007, 01:23:14 PM
 ::) Should have stayed with glow motors...

G
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 06, 2007, 06:09:01 PM
::) Should have stayed with glow motors...

G
no you have more sense than that!! ;D
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on March 06, 2007, 06:44:33 PM
 ;) Still got a few knocking around in the shed Martin, the CMB90 takes some beating and weighs next to nothing. (Relatively).

But I do like the convenience of petrol, I must be getting lazy.

Glenn
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 06, 2007, 09:59:21 PM
;) Still got a few knocking around in the shed Martin, the CMB90 takes some beating and weighs next to nothing. (Relatively).

But I do like the convenience of petrol, I must be getting lazy.

Glenn
Best place for em in my opinion lol i hate nitro engines ,a real pain in the ass to start and too expensive to run too!!.I like the idea of turning up at the lake with my boat and radio and some fuel and having hrs of fun instead of carting a truck load of starting gear to the lakeside. 8)
Title: Re: new petrol powered deep v mono scratch build!!
Post by: omra85 on March 06, 2007, 10:10:02 PM
Aw, come on Martin, don't pussyfoot around - if you don't like something just say so ;D ;D
I'll be popping out this weekend for a gallon of EDL and 4 gallons of 5% - only 84 :o ;D
Danny
PS Can you remember diesels - they're even cheaper (and slower) :P
Title: Re: new petrol powered deep v mono scratch build!!
Post by: Phantom1 on March 06, 2007, 10:47:30 PM
Danny, i'm gonna opt to bang a sparky in this hull and see how i get on, seems to me to be an all round cheaper option. If i dont get on with it then i can build another hull and do a nitro!  sorry to let the side down buddy.........

Allan
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 06, 2007, 11:22:16 PM
Danny, i'm gonna opt to bang a sparky in this hull and see how i get on, seems to me to be an all round cheaper option. If i dont get on with it then i can build another hull and do a nitro!  sorry to let the side down buddy.........

Allan
petrol is a step up not down its the future in boats,the zen 7 is 26cc and puts out an amazing 7.3 hp the record for a petrol boat running a zen is 102 or 3 mph.also the boats are bigger which is a pluss especially when your running in chop.if you want to learn more about gas boats as the americans call them take a look here!!
http://http://www.rcuniverse.com/forum/forumid_236/tt.htm
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on March 06, 2007, 11:56:05 PM
And here was me just starting to work on Phantom to sell him my CMB. Never mind. By the way Martin - keep meaning to ask each time I come here, what did you use the bloomin great hammer for in picture 1 on this thread? Surely not the boat? Or did you have Danny round to remove some offending engine mounting rails?  :o :o

Glenn :D
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 07, 2007, 07:53:55 AM
Sorry glenn i have to admit i have a phobia of nitro engines from past experience although i do have one lol i just hate carrying all the gear thats why i decided to go witha petrol engine.Nitro is faster for most boats under a certain size though,but the way petrol engines are improving the speeds are getting higher so the difference i guess is a personal choice.Im sure that cmb will make a boat that size fly no doubt about that.The rubber mallet in that pic was used to fit the rails to the bulkheads as they were a nice snug fit.On this build they all slot together forming a framework which makes for a very strong boat.I was been a bit tongue in cheak when i was putting nitro engines down by the way!! :D
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 07, 2007, 10:36:48 PM
well i finally got my stuffing tube today and its bent to shape and test fitted,ive made a bracket for it out of ply with studs epoxied into it i will put a piece of ali bent to shape over the top of the tube to hold it in place.seems like it will work well,i will also install a small length of larger tube at the transome for this one to fit in so i can remove it easy when needed.the small length of larger tube will be glassed into the hull.once i get my new ferrule i will cut the flex to length and fix the flex into the ferrule using loctite retaining compound no 603.yup no solder just like the europeans do it!! ;D
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on March 08, 2007, 12:42:39 AM
well i finally got my stuffing tube today and its bent to shape and test fitted,ive made a bracket for it out of ply with studs epoxied into it i will put a piece of ali bent to shape over the top of the tube to hold it in place.seems like it will work well,i will also install a small length of larger tube at the transome for this one to fit in so i can remove it easy when needed.the small length of larger tube will be glassed into the hull.once i get my new ferrule i will cut the flex to length and fix the flex into the ferrule using loctite retaining compound no 603.yup no solder just like the europeans do it!! ;D

One of them Europeans like you, and me, you mean?

Yep, we have funny old ways eh?
 
I would still silver solder it - and an angle grinder with a nice thin (Steel cutting) blade went through my flexi cable nicely.

He he,

Glenn. Feeling not very European just now........
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 08, 2007, 08:47:02 AM
I aint European and never will be the sooner mr Blair and his pals realise we are Brittish and proud of it the better ,why did we fight two wars to stop the Germans running this country for him and his pals to give them the powers 60 years later  >:(..This country needs a shake up !!phew rant over lol.
 loctite retaining compound will do the job if it handles a zens power it will handle a weedy i hate soldering too !!.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on March 08, 2007, 09:52:34 AM
I aint European and never will be the sooner mr Blair and his pals realise we are Brittish and proud of it the better ,why did we fight two wars to stop the Germans running this country for him and his pals to give them the powers 60 years later  >:(..This country needs a shake up !!phew rant over lol.
 loctite retaining compound will do the job if it handles a zens power it will handle a weedy i hate soldering too !!.

 :) Thought that might get a reaction - feel better now?

Ho Ho. If you want I can get one of my engineers to silver solder the ferrule on, no cost to you only postage, if you want to take this up, get the length set up and PM me for the address and I can get you sorted out.

Glenn.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: w3bby on March 08, 2007, 10:33:02 AM
Martin, if you spent as much time building as you did on the forums you'd be finished by now  ;D ;D :-*

As an expat in Sweden what am I? European, pseudo-Scandinavian or just an Expat!

If Tony is so popular how the h*** did he get back in, all I hear from the UK is disgruntlement (is that a word?).

Back to boats, less talk, more action.............lets get this thing on the water ;D
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 08, 2007, 04:33:05 PM
thanks for the kind offer Glenn ill send you a pm i have cut the flex to length and installed the tube for it i still need to fasten it in ,i made a bracket to hold it near the engine end and a larger diam tube at the transome for it to slide into which will get glassed in.i will add a cpl  thrust washers before i connect it all up one where the tube exits and the ferrule is and one next to the strut and another wher the drive dog runs against the strut.Ian i dont think im doing too bad with this build 2 weeks in now unlike others i could mention who have been at it for a year now.i still need some servos for the boat yet as i fried a cpl in a sail boat that i was gonna use in this .by the way i know in the pic the tube is short of the ferrule but i havent fastened the tube in yet and it will meet perfectly so there lol.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on March 08, 2007, 05:54:55 PM
No problem. Just the cable to be soldered into the brass tapered ferrule, keep it shy of the grub screws in the picture right?

Glenn
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 08, 2007, 07:04:43 PM
No problem. Just the cable to be soldered into the brass tapered ferrule, keep it shy of the grub screws in the picture right?

Glenn
yep you got it mate thanks for this its much appreciated!!.hows she looking now?.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: w3bby on March 08, 2007, 08:47:50 PM
Just busting your b***s  ;D
That's close enough, you're not going to get any whip in that small space. One comment, I would suggest a second piece of angle on the rudder so that you support it on both sides (as you have done the strut).
Title: Re: new petrol powered deep v mono scratch build!!
Post by: omra85 on March 08, 2007, 09:38:14 PM
Coming along well Martin, good strong looking job.  I agree with Ian, put another angle on the rudder - it's only as strong as the weakest point, which is the bend at the transom.  Very neat :) Are you using 1/4 or 3/16 flexis?
Danny
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 08, 2007, 10:03:56 PM
Thanks guys i was intending to put another angle on the rudder got a bit sidetracked thanks for the heads up.Im using 1/4 flex cable and stub shaft mate ,Glenn has kindly offered to solder the ferrule onto the flex for me also.Soldering isnt one of my strong points so thats good!!,hopefully i can do the radio box and attatch the deck over the next cpl of days then i can prepare her for paint.I cant beleive how fast this things coming together im quite pleased with it so far. ;)
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 12, 2007, 07:46:05 PM
hi guys ive test fitted the deck on my boat and ive been playing arround with a screen have alook and see what you think.i also added a scoop for the deck to help with forced air to help cool the motor.the screen will need to be cut in half so i can get a bend or at least angle it to make a slight v shape but you get the idea what it will look like when shes done.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on March 12, 2007, 07:58:09 PM
Where'd that scoop come from please Martin?

I need something to cover my spark plug and cap and stop scaring the two little drivers that have to sit next to it. An air scoop may be perfect.
Since fitting the new mounts the motor is higher now and the engine cover does not fit properly.

Glenn
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 12, 2007, 09:51:09 PM
its my secret!!!! ;D ....................... haha just kidding right here goes and dont laugh!!,my wife works as a retail manager for a large clothes outlet well shes the manager.when unloading the car after shed been shopping i noticed these strange objects in the boot .on asking she told me they were off a display for ladys boots,yup they go in them to make em stand up haha.i had a brainwave no dont laugh i do have the odd one or two now and again and i came up with this idea.they are plastic and i cut them to shape with my modeling knife.ill see if i can get some more and if so ill cut you a cpl and post em to yaa mate.did you get that flex and ferrule yet?.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on March 13, 2007, 01:39:16 AM
Cheers Martin. No, nothing arrived in post today apart from some bills, I can post them to you for paymeny if you want. Postie comes about 11 so by lunch tomorrow should have it with luck. Will drop you a line tomorrwo let you know either way.

If it comes we will have it back in the post within an hour or so.

G
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 13, 2007, 09:02:31 AM
err you can keep yer bills mate thanks for the err offer  ::),you should have it today hopefully,hows the boat looking im undecided on the shape of the screen yet just playing with bits of scrap till i find a shape i like.ill post the scoop to you tomorrow when i get into town,i have one spare somewhere.it will need some trimming to make it fit but its arround 6" long and 1 1/2" high so theres a bit to play with.you could even use it as a mould to make a glass fibre one if you prefer but its pretty strong as it is.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 17, 2007, 10:03:01 AM
Hi guys re did the screen and ive epoxied the deck on and coaated the hull and deck again hers a pic of her prior to epoxy coating the deck ,notice the new screen shape  i just trial fitted it for the pics so its not fixed on yet.more pics to come soon just waiting for things to dry before i can do any more.all hardware is mounted just need to shorten a few bolts before i tighten everything down and i need to cut another bracket for the other side of the rudder standoff.I also left the deck over hanging by 1/4" at the transome and tapering off to nothing about 1/3 from the stem then filled the over hang and using my finger made a concave to form a spray rail so any water rising up the sides is despersed away from the boat ,should help keep things dryer!!.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 24, 2007, 02:37:10 PM
Hi guys after a mini disaster with paint(found out paint i used wasnt fule proof)
i went out and bought some tetrosyl spray cans i sanded my old opaint off and sprayed the hull with filler primer in yellow.i gave her 5 coats of this then after a light sand i applied 3 coats of gloss yellow .here are some pics of her from priming to finnished gloss!!.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 24, 2007, 02:45:19 PM
hers the finished paint job i hope you guys like it i absolutely love it  ;D!!
Title: Re: new petrol powered deep v mono scratch build!!
Post by: 2772e on March 26, 2007, 03:06:42 PM
Hi Mart,

Should see that coming alright, if i make it up to Windy this year, give you a race!

When are the stickers coming

Regards

Simon
Title: Re: new petrol powered deep v mono scratch build!!
Post by: w3bby on March 26, 2007, 05:10:13 PM
Definitely yellow Martin  :o ;D
Title: Re: new petrol powered deep v mono scratch build!!
Post by: omra85 on March 26, 2007, 07:01:47 PM
The great thing about painting your own boat is that the touch-up is always handy ;D
That's why mine are white (gelcoat filler is only available in one colour) ;D ;D

All together now - "Day-oh, de Day-oh, daylight come an' me wanna go home"  You're too young Mart ??? ??? ;D

Danny
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 26, 2007, 07:29:12 PM
The great thing about painting your own boat is that the touch-up is always handy ;D
That's why mine are white (gelcoat filler is only available in one colour) ;D ;D

All together now - "Day-oh, de Day-oh, daylight come an' me wanna go home"  You're too young Mart ??? ??? ;D

Danny

is 42 too young hehe actually the yellow is quite dark its more like mustard than yellow but it looks goodin the sunlight,as for the stickers im not sure im still deciding on colours was thinking of red flame with orange outline  opinions considered  ;D.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 31, 2007, 05:19:55 PM
hi guys managed to test her out this morning,the big lake was really rough 2 foot chop so i decided the small lake would be best to try her even that had 6" chop and it was really windy.she ran well got up on plane and ran straight and smooth despite the conditions.i need to get more throw on the rudder though as turns were wide and long.let me know what you guys think!!.
http://http://media.putfile.com/first-run-of-scratch-built-deep-v-mono
Title: Re: new petrol powered deep v mono scratch build!!
Post by: omra85 on March 31, 2007, 08:02:28 PM
Hi Mart
VERY tasty.  Looks as though it will 'stonk' when you can open it up.  VERY impressive.
So - when's your first race then ??? ??? ;D

The video was a bit wierd - 1 minute 10 secs of the boat, then a black screen with the 'Generation' soundtrack for 10 minutes ???
Am I doing something wrong (it took ages to download).

Anyway I bet your well chuffed with that boat!

Congratulations
Danny
Title: Re: new petrol powered deep v mono scratch build!!
Post by: 2772e on March 31, 2007, 08:22:35 PM
Mart,

Looking good, looks like we both had success today! Weather was allot better down hear, we were in t shirts.

Simon

 ;D ;D
Title: Re: new petrol powered deep v mono scratch build!!
Post by: w3bby on March 31, 2007, 09:41:40 PM
The video was a bit wierd - 1 minute 10 secs of the boat, then a black screen with the 'Generation' soundtrack for 10 minutes ???
Not just me then. Bigger lake and watch it go  ;D good job Martin. (http://www.thesmilies.com/smilies/happy0064.gif) (http://www.thesmilies.com)(http://www.thesmilies.com/smilies/happy0064.gif) (http://www.thesmilies.com)(http://www.thesmilies.com/smilies/happy0064.gif) (http://www.thesmilies.com)(http://www.thesmilies.com/smilies/happy0065.gif) (http://www.thesmilies.com)(http://www.thesmilies.com/smilies/happy0065.gif) (http://www.thesmilies.com)(http://www.thesmilies.com/smilies/happy0065.gif) (http://www.thesmilies.com)(http://www.thesmilies.com/smilies/happy0065.gif) (http://www.thesmilies.com)(http://www.thesmilies.com/smilies/happy0065.gif) (http://www.thesmilies.com)(http://www.thesmilies.com/smilies/happy0065.gif) (http://www.thesmilies.com)(http://www.thesmilies.com/smilies/happy0065.gif) (http://www.thesmilies.com)(http://www.thesmilies.com/smilies/happy0064.gif) (http://www.thesmilies.com)(http://www.thesmilies.com/smilies/happy0065.gif) (http://www.thesmilies.com)
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on March 31, 2007, 10:58:03 PM
guys im so sorry i checked the vid out and it turned out that song went on and on after the clip oops.well ive re edited the vid and its now on utube hope its better for yaa.bigger lake yes i agree but i didnt fancy the 2 ft chop that was coming over the sides of the lake lol im glad you like it guys if you spotted anything wrong feel free to let me know.apart from the two almost dead ducks that is lol. :o
http://http://www.youtube.com/watch?v=10_5s6Qh4Gc
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on April 02, 2007, 01:53:56 PM
Hey - it works at last. It will be interesting to see it flat out!! ;D

Go on, race it!!

G
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on April 02, 2007, 02:54:21 PM
Glenn i dont think ill be racing any time soon im just in this for some fun at our local lake with my son,i may yet build another one that way we can race each other with identical boats and engines. how do you think she went then?.remember this engine is running a standard muffler with no pipe and just a bigger carb to help get a few more rpm.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: od boating on April 03, 2007, 01:42:58 PM
hi
 nice to see boat in the water at last!  doesn't go bad for a coffin fitted with a hedge trimmer (only joking) ::) good to see a boat built for the price of a good epoxy hull. keep up the good work
 i see fleetwood  is still as windy as ever
       regards Steve
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on April 03, 2007, 02:07:58 PM
Hi steve thanks for the err compliment  ::) this boat will move on out once shes dialed in, this strimmer motor revs high and i will be getting  a pipe on it in the summer ,my mates hydro forming me one whn he gets a water pump sorted to do the job.The boat will do over 30 maybe mid 30s with the motor as it is with the walb carb on it.A mate has the same engine in one and hes gps,d it at 35 in very rough conditions 12" chop  :o rather him than me.Yes fleetwood hasnt changed its still windy ,if you think those conditions were bad you should have seen the big lake it was scarey.All in all i payed about 150 to get this boat running thats including radio gear  ;D,i payed 15 quid for this engine brand new and i got lucky as all the walb carbs are a straight fit.If i get bored of the stock motor ill get it ported a little before i probably fork out for a zen.By the way this boat runs better than those blue fishy knock offs on ebay with more hook in them than peter pans mate!!.With a zen i know this hull will do 50 mph plus as ian webster has the same hull ,i changed the design of this hull considerably too by myself and she runs very straight and true with no vices so far .If any show up when speed increases time will tell but im sure that can be sorted with trim tabs if needed maybe turn fins also.Im also thinking of using this hull to make a fibreglass one by making a mould off it first,the bare hull weighs 7 lb so a zen in there would deff make it move!!.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: w3bby on April 03, 2007, 02:45:55 PM
A zen will make it move, above and beyond the limits of the design  ;D
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on April 03, 2007, 03:07:16 PM
A zen will make it move, above and beyond the limits of the design  ;D
not my design lol  ;D serriously though anything above 40 to 45 would be more than enough for me,but thers no harm in pushing the envelope a little hehe.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on April 04, 2007, 05:01:41 PM
Aye, seems to go OK, I think I am with Ian, Zenoah would maybe be a bit much for it. Maybe buy a Zenoah and keep a look out for a second hand hull?

I remember years back upgrading a boat from a 6.5cc to a Webra 61 (10cc), despite the instructions telling me not to, it was an absolute pain, really, really fast but so unstable as to not be safe and fun anymore. Actually had to slow it down to turn it!

It used to crash for fun after that upgrade.

Glenn
Title: Re: new petrol powered deep v mono scratch build!!
Post by: w3bby on April 04, 2007, 05:17:19 PM
Got me wrong guys, stick a zen in there and it will fly, mine did. It was fast and stable with a full mod 260 but could be difficult to keep on the water in a wind. I adjusted my balance point with a chunk of stainless L profile and it was good to go.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on April 04, 2007, 05:39:59 PM
Aye, seems to go OK, I think I am with Ian, Zenoah would maybe be a bit much for it. Maybe buy a Zenoah and keep a look out for a second hand hull?

I remember years back upgrading a boat from a 6.5cc to a Webra 61 (10cc), despite the instructions telling me not to, it was an absolute pain, really, really fast but so unstable as to not be safe and fun anymore. Actually had to slow it down to turn it!

It used to crash for fun after that upgrade.

Glenn
i was gonna say same as ian on that this boat is as stable as houses mate i wont have any fear of sticking a zen in there and after seeing some new hulls recently that garry  pope was hoping to race i know which one id rather have!! ;D heres the second run enjoy i did ,oops sorry officer i never saw that buoy lol
http://http://www.youtube.com/watch?v=JEFk5rwwMPc
Title: Re: new petrol powered deep v mono scratch build!!
Post by: w3bby on April 04, 2007, 11:39:51 PM
Time to hit the loud button Martin and open it up, stop pussy footing around  ;)
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on April 05, 2007, 08:31:23 AM
Time to hit the loud button Martin and open it up, stop pussy footing around  ;)
Haha gimme a chance man i dont think she will go much faster just now till i get the prop walk sorted as i had full left rudder on most of the time at full speed!,! even so id say shes pretty fast considering im not running a zen.Once i get a pipe sorted im sure speed will be much better along with a few porting mods i have planned in the future.If i decide to live on the edge ill buy a zen and have some more fun,i said when i built this boat id be happy with 25 mph and shes well over that allready maybe over 30  so im chuffed to bits as this engine cost me 15 quid lol ;D.Hopefully next time at the lake the duck feeding brigade wont be watching and i can ignore the ducks instead of slowing down for em or avoiding them hehe!!.Swans are another matter them things dont move for nothing >:(.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on April 11, 2007, 12:01:39 AM
well prop walk is almost sorted i only need a little left trim on the rudder to keep straight so maybe another washer to angle the prop a bit more left will sort it out.i ran her this morning in rough water and wow she really loves it!! heres a pic of her also a guy i met had a speed gun he was running his rc car in the car park and he timed it at 35 mph which was good considering the 10" chop at one end of the lake.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: omra85 on April 12, 2007, 10:48:40 PM
Hi Martin
Glad it's up and running and 35mph - not bad at all :o :)
Don't try to tilt your shaft, what you're getting is torque reaction.  The prop is pushing anti clockwise making the boat try to go clockwise.  This causes it to run to the right - it happens with them all!
The cure is to add weight to the left hand side in the form of stick on lead weights as used by tyre companies for balancing alloy wheels, (try pleading with your local KwikFit).  The sprips are 80 grams for a full strip but you may not need it all.  Try sticking one strip inside the boat about level with the back of the engine where the side meets the bottom (as low as you can get).
This way does not affect your steering which angling the prop will.
Danny
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on April 12, 2007, 11:00:18 PM
Hi Danny ive shimmed the strut allready ,only 1 mm and it helped a bit but ill try the lead weight how much weight would you think id need?.I have lots of lead here im sure i can fix some in there somehow.Any reason you say level with the engine and not at the transome?.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: Martin [Admin] on April 12, 2007, 11:09:32 PM

Well done sir.

Martin.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: w3bby on April 12, 2007, 11:19:15 PM
Any reason you say level with the engine and not at the transome?.
Best effect without changing your balance point, your balance point(front/back) is probably around the engine.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: omra85 on April 12, 2007, 11:19:53 PM
Hi Martin
If you've got your own lead then great, just make sure it stays stuck on!
As for the amount, it will vary as no two boats are the same.  Try 100 grams for a start as yours is a big boat.  You can adjust it depending on the effect.  The reason for putting it at the centre of bouyancy is that it will not try and 'twist' the boat which it does if you put it at the transom.

Of course, the VERY BEST way of curing this is to put a wedge underneath the right of the boat at the transom.  The effect of the wedge will increase the faster you go through the water and have less effect when you slow down which is the exact opposite of the torque effect you're trying to cure
The lead effect is constant whatever the speed so at slow speed the boat will tend to steer slightly left.  However, it's a LOT easier to adjust lead weights rather than a wedge!
Add or take off lead, then trim the rudder AT FULL SPEED so that the boat runs straight. When you bring it in, the rudder should be dead centre.
Cheers
Danny
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on April 12, 2007, 11:20:19 PM

Well done sir.

Martin.


thankyou sir  ;)
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on April 12, 2007, 11:22:44 PM
cheers Danny any pics of this wedge your talking about?.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: omra85 on April 12, 2007, 11:25:02 PM
Don't go there - unless you REALLY have to ;D ;D
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on April 14, 2007, 01:08:13 PM
Don't go there - unless you REALLY have to ;D ;D
LOL maybe not !!
Well ive added a cpl of turn fins to the transom too so ill test them sometime tomorrow hopefully.I made them myself from aluminium and theyre nice and sharp so hopefully wont cause too mkuch drag.Ill let you know how she runs with them and hopefully ill have a new video to show you guys .
Title: Re: new petrol powered deep v mono scratch build!!
Post by: omra85 on April 14, 2007, 09:57:05 PM
Looking VERY professional Martin - nice job.
Danny
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on April 15, 2007, 06:55:42 PM
Looking VERY professional Martin - nice job.
Danny

cheers mate ,well i took her out agian today and for some reason she just wasnt getting up and going id say 1/2 speed i was cursing thinking the turn fins were causing too much drage etc.i brought her in adjusted the prop angle tried her again then she stalled  :(.then when starting the enine again on the stand she just wouldnt rev then this guy said do you want me to tune it for you so i said be my guest thinking let someone else have a go lol.wow in two seconds she was reving well so i tossed her back in and the difference was amazing she leapt up on plane and she was getting faster and faster the longer she ran.he said another 1/8 turn should make another big improvement and so it proved.he also said he thinks my no name chinese weedy is in fact a zenoah!!all in all im chuffed to bits with the speed of this thing now.that said she still doesnt like left turns and still drifts right a bit so ill add more weight to the left next time.sorry no video this time the wife took the camera walkabout.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on April 20, 2007, 12:06:20 AM
hi guys heres an update took her out yesterday and she was going well in very rough water and wind then oops she flipped lucky no damage and alls running again now.have a look and a laugh ;).http://http://www.youtube.com/watch?v=RIiugpqf2lw
Title: Re: new petrol powered deep v mono scratch build!!
Post by: 2772e on April 20, 2007, 07:13:14 PM
Hi Mart,

Looking good, well done.

35 mph for a hedge cutter is going some,(dont run over the lead ;D) look forward to seeing her go on a calm day.

I am off for my maiden voyage tomorrow so fingers crossed.

Keep up the good work.

Regards

Simon ;)
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on April 21, 2007, 09:40:38 AM
Cheers Simon good luck with your first trip to the lake hope she goes well for yaa ,dont forget the video camera  ;).yea speeds pretty good and turns out the engine is probably a zen copy according to a guy who tuned her for me at the lake last week.His mate owns a mower shop and hes seen a few of these engines and says they are good.I can vouch for that as she certainly moves out and gets up on plane very fast ,she even flies and does barell rolls too lol  ;D. she should be even faster when i get the pipe made.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on April 22, 2007, 01:09:52 AM
So, has the new rudder helped out with the problems you have experienced yet?

G
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on April 22, 2007, 12:45:04 PM
So, has the new rudder helped out with the problems you have experienced yet?

G
Hi mate havent tried it yet hopefully next week sometime ill post the results to keep you informed  ;).i think this rudder will be better as its a lot deeper and a little wider too.i also moved it in towards the centre more so hopefully it wont cause as much drag on the right, ive also  sharpened the leading edge more and also the botom of the rudder blade has been made v shaped rather than flat as i mate has done some tests in a test tank with a full size boat designer and came up with some very interesting results regarding rudder placement and such like.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on April 23, 2007, 12:34:59 AM
Good. Thinking things may get better soon for you.

Give Patrik a ring about it!!

G
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on April 23, 2007, 01:38:03 AM
Good. Thinking things may get better soon for you.

Give Patrik a ring about it!!

G
err no i dont think ill be ringing pat hes as mad as a hatter lol ;D thanks for the tip on the insurance ill sort it out asap.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on April 23, 2007, 12:04:05 PM
Good. Thinking things may get better soon for you.

Give Patrik a ring about it!!

G
err no i dont think ill be ringing pat hes as mad as a hatter lol ;D thanks for the tip on the insurance ill sort it out asap.

I have passed him your number Martin......


Glenn
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on April 23, 2007, 04:21:20 PM
now im scared  :o.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: w3bby on April 23, 2007, 11:29:56 PM
 ;D ;D ;D ;D ;D ;D ;D
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on April 24, 2007, 12:20:15 AM
;D ;D ;D ;D ;D ;D ;D
dont you be laughing either he lives just up the road from you  hehe  :D.abba dabba doo  ::)
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on April 26, 2007, 12:58:23 PM
Hi guys i just put the decals on my boat this morning and thought id post a few pics of it.the theme was thought up with my son in mind  and the decals were made by a good friend in the states who made them to my design for me.he also takes orders for custom made decals to your design requirements if anyones interested ill pass on his email.hes a nice guy and his prices are very reasonable.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on April 29, 2007, 09:29:37 PM
wot no replies on my decals? .maybe this will get some replies?.
http://http://www.youtube.com/watch?v=32Vj4vgFqoA
Title: Re: new petrol powered deep v mono scratch build!!
Post by: 2772e on April 30, 2007, 07:49:44 AM
Hi Mart,

Looks good, now try running round the buoys at race speed!

I tried yesterday and have got some battle scares to show for it and got some serious air.

Have a look at my pre tuned post and video link.

I will try and get the tuned one uploaded tonight.

Whats next for you? Are you going to build that cat?

Regards

Simon
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on April 30, 2007, 09:18:14 AM
Hi Mart,

Looks good, now try running round the buoys at race speed!

I tried yesterday and have got some battle scares to show for it and got some serious air.

Have a look at my pre tuned post and video link.

I will try and get the tuned one uploaded tonight.

Whats next for you? Are you going to build that cat?

Regards

Simon
simon as you noticed im a bit nervous of going flat out in the turns, too many ducks and too many old fellas with little boats who dont seem scared i might run over there little boats and destroy em.i really need to get there midweek so i can try and get the lake to myself to really open her up.im not bothered about bouys either ive no desire to race whatsoever im in this for a bit of fun and a relaxing drive round the lake.wait till you flip youres you wont be in a hurry to do it again i can asure you especially in salt water  ;).im off to check out your vid is this of the big boat or the nitro?.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on April 30, 2007, 09:24:22 AM
i almost forgot to say,next for me will be maybe a large cruiser for another petrol motor,maybe using the pt boat hull and a home design for the top structure im undecided yet.im not going to build the cat unless someone wants me to build it for them!!,by the way anyone interseted in decals the guy who did mine shipped me those for $9 and they were free to me as a favour for favours done etc.if you want any he would charge $30 for decals of a similar scale etc.$40 all in is dam good try getting them for that here!!.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: retro boats on May 08, 2007, 04:00:29 PM
hi mart
  i think you should have a go at he cat it would be quite a interesting project
 
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on May 08, 2007, 05:18:56 PM
the cat would be nice but id need a zen to make it move and funds wont allow at the moment ,i made this boat on a tight budget despite people telling me it couldnt be done.when i can afford a zen i will build the cat most likely either that or i also have plans from the same guy for a 72"  offshore mono hull  ;D.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: 2772e on May 08, 2007, 06:03:23 PM
Hi Mart,

Dont bother with the expense of a Zen at the moment. Get a good, and i mean GOOD tuned pipe. Mine is a standard Zen with a localpipe expert and it is good for about 45 mph, stock. Start tuning motors and you loose the reliability.

If you want the details of an expert pipe maker i will pm, i have one of is pipes and they are like a turbo!

Regards

Simon
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on May 08, 2007, 10:21:20 PM
ive no intention of buying a zen yet simon i value my ba**s too much hehe,as regards the pipe a mate is going to make me one when he recovers from a broken collarbone and im in no rush just yet as im happy with 35 mph.id have said yours was doing over 45 have you had it gps,d?.i know this hull will handles 50 to mid 50s as w3bby has run his with a fully moded zen and although she can get flighty in wind she is pretty stable.the zen is something that will have to wait for a while longer im afraid.you can pm me the price of that pipe if you like just out of interest  ;).
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on May 09, 2007, 12:57:36 AM
Just buy a second hand CMB90 and pipe and stick that in instaed of a Zenoah. Cheap performance, should get it for about a hundred quid or so. Then your boat'll go some Martin.

Assuming it stays the right way up, of course...


G
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on May 09, 2007, 08:25:00 AM
Just buy a second hand CMB90 and pipe and stick that in instaed of a Zenoah. Cheap performance, should get it for about a hundred quid or so. Then your boat'll go some Martin.

Assuming it stays the right way up, of course...


G
nitro is not in my plans for my boat im not a nitro fan to be honest too much hassle,i can pick up a zen for 130 quid delivered from oniel bros so when i want  50 mph ill get one of those,also petrols cheap compaired to nitro at 20 quid a gallon   ;).how many boats have you flipped glenn? you seem to like mentioning my little misshap  ::) .
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on May 09, 2007, 12:17:47 PM
I've not flipped any for a long time. Crashed plenty, probably more than 20, but never flipped. There's always time though. Might even try a hydro one day, should be able to make that fly.

Yeah, just winding you up about yours.

Glenn
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on May 09, 2007, 02:51:31 PM
I've not flipped any for a long time. Crashed plenty, probably more than 20, but never flipped. There's always time though. Might even try a hydro one day, should be able to make that fly.

Yeah, just winding you up about yours.

Glenn
well seeing as this is my first gas boat i dont think im doing too bad the flip wasn't the boats fault it was a combination of the wind and my prop angle i went across the wind and oops now iv got trim tabs i can play some more till i get her set up correctly.the chops quite bad when the wind blows at fleetwood its probably worse than the sea at times.good luck with the hydro they aren't my kind of thing either i prefer boats to look like boats.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: glennb2006 on May 10, 2007, 01:12:20 AM
 ;)
Not to worry. No harm done to the boat and noone died. Is the new rudder improving life for you with the boat?

G
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on May 10, 2007, 04:13:55 PM
;)
Not to worry. No harm done to the boat and noone died. Is the new rudder improving life for you with the boat?

G

hi glenn yea the new rudder works great im just trying to figure out these tabs at the moment to get things just right.ill probably take her out again this weekend.ive contacted the mpba about membership and had no reply yet? how do i join it if they wont answer emails?.also how do i pay for it and get membership is there a form to fill in or what?.cheers!!.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: 2772e on May 10, 2007, 06:53:37 PM
Mart,

Why MPBA? Try OMRA? They have a website and are very quick with setting you uo and giving you the number?

Regards

Simon
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on May 10, 2007, 07:09:15 PM
but does omra cover me for running my boats at weekends for fun? the mpba does and includes insurance for 20 quid.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: 2772e on May 10, 2007, 07:36:01 PM
Mart,

Yes it does, or at least thats what i am told. I joined Brentwood as well but did not need insurance as i already have it via OMRA. If in doubt send them an email or give the secretary a ring. Nice bloke, helped me.

Regards

Simon ???
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on May 21, 2007, 09:46:10 AM
i think you will find omra only includes race boats during races not a guy using his boat for fun on a park lake!!.
any way my son crashed my boat yesterday at 25 mph into a concrete wall  :o.heres a few pics of the damage and the repair job.surprisingly little damage considering,good job these woodys are strong i doubt a polyester glass hull would have come off in such good shape lol  ;D.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: 2772e on May 21, 2007, 09:11:39 PM

Ouch, gutted? ???

A guy racing yesterday hammered his boat, gaffer taped it and went back out, sunk it and tried again. Must be bloody mad, his was all split down the front end. >:(

See how it looks at the next event? ???

Well i managed to get a win in my heat and a second in the class. Pretty impressed as it was only my second race. ;D

Regards

Simon
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on May 21, 2007, 10:16:24 PM
Do not fear Marty is here shes fixed  ;D
Back to what you were saying some guys are mad lol not me i love my boats too much,too much time and effort put into building them.Well done on your second place you should be proud of yourself thats a great achievement mate.Heres a cpl of pics of the repair can you see the join  :o  ;D  ;).
Title: Re: new petrol powered deep v mono scratch build!!
Post by: 2772e on May 22, 2007, 07:23:50 AM

Sweet Mart, cant see the join.

I was going to stick a bit of rubber on the front of mine for racing! More damage seems to occur when the boats get recovered and launched back towards the bank, or concerete sides!

Simon
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on May 22, 2007, 11:27:05 AM

Sweet Mart, cant see the join.

I was going to stick a bit of rubber on the front of mine for racing! More damage seems to occur when the boats get recovered and launched back towards the bank, or concerete sides!

Simon
yea i had rubber on the nose i made it from an old windscreen wiper works good i just trimmed one face so it was flat ,just doesnt help at 25 mph or more  :o.you can buy rubber from dave at prestwich its self adhesive i think .
Title: Re: new petrol powered deep v mono scratch build!!
Post by: ids987 on May 22, 2007, 12:21:38 PM

Sweet Mart, cant see the join.

I was going to stick a bit of rubber on the front of mine for racing! More damage seems to occur when the boats get recovered and launched back towards the bank, or concerete sides!

Simon

You had the right idea on Sunday Simon - no stops = no intervention from the rescue crew.
I enjoyed watching your run from the rescue boat though.
Well done that man !

Ian
Title: Re: new petrol powered deep v mono scratch build!!
Post by: ids987 on May 22, 2007, 12:44:04 PM
i think you will find omra only includes race boats during races not a guy using his boat for fun on a park lake!!.
any way my son crashed my boat yesterday at 25 mph into a concrete wall  :o.heres a few pics of the damage and the repair job.surprisingly little damage considering,good job these woodys are strong i doubt a polyester glass hull would have come off in such good shape lol  ;D.

Martin,

OMRA insurance covers general usage as well. When I joined OMRA, I was already a member of MPBA - and insured that way - through my local club (Stevenage - insurance required). When I joined OMRA, I was told I didn't need MPBA insurance as well, but I still checked it out with OMRA. We have a mix of OMRA and MPBA now. When I checked it out, the OMRA insurance also included other forms of RC models, but they advised additional insurance for aircraft - due to the limit of liability. This was a couple of years ago, but I doubt that it has changed. Any doubts / interest, the treasurer is the man who looks after insurance and the like. Contacts are on the OMRA website, or I can PM to you if you like ?

Ian
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on May 22, 2007, 01:57:48 PM
from what i understand it only covers you for public liability? so im not covered if i hit another boat or damage my own so i see no reason to get it.my boats not likely to jump out of the water and hit anyone it seems a waste of money to me to be honest.how much does it cost to join omra ? mpba is 22 including a one of joining fee of 2.i can understand having it for a plane as it could crash and hurt someone or damage property,i doubt that is ever going to happen with a boat .theres no swimming or row boats on the lake i use.what other forms of rc does it cover?.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: ids987 on May 22, 2007, 03:38:59 PM
from what i understand it only covers you for public liability? so im not covered if i hit another boat or damage my own so i see no reason to get it.my boats not likely to jump out of the water and hit anyone it seems a waste of money to me to be honest.how much does it cost to join omra ? mpba is 22 including a one of joining fee of 2.i can understand having it for a plane as it could crash and hurt someone or damage property,i doubt that is ever going to happen with a boat .theres no swimming or row boats on the lake i use.what other forms of rc does it cover?.
Martin,

OMRA membership is 22 per year. I think it covers all kinds of R/C models, but don't take my word for it, and I'm not trying to sell it....
Insurance is just for public / third party liability. Most bodies of water which allow running of boats require insurance. I guess there's a chance of swimmers, dinghys, lilos, divers, anywhere there's water. It's also a bit of an eye opener to see how far I/C boats can travel (and at what speed), when they come out of the water - even across the ground. Obviously I wouldn't try to guess the risks at your running ground, as I don't know it......

Ian
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on May 22, 2007, 05:41:50 PM
thanks for that mate it doesnt give any info about it on the omra site thats why im reluctant to join just for the sake of joining!!.i want to be sure it covers me anywhere not just on recognised waters,otherwise i might as well get insurance from my own insurance company.im not a lawyer,youd think both bodys would give more info on what your covered for and where rather than just leave it to your imagination.
Title: Re: new petrol powered deep v mono scratch build!!
Post by: 2772e on May 22, 2007, 07:01:07 PM
Hi Mart,

I would concur with Ian, insurance on high speed boats is a must. Your boat handling skills might be good but accidents do happen, if there was a failure of any type with the receiver, transmitter, boat, you took ill, fell over etc. I hit a buoy with mine and it travelled some 20 feet before stopping. Even the experts loose it (not me obviously). Water is not controlable. I saw 1 go over a bank on Sunday into the road and when testing at Brentwood twice they ended up on the banks.

There is a limited liability on damage to property etc. Personal liability insurance is running at the 5,000,000 to 10,000,000. We live in an age of ambulance chasers and litigation. I would not want to be the one to test the case, and or bring the hobby into disrepute or even get them band by the green welly brigade! I think loss of a finger is running at about 10k at the moment. It only takes a kid sticking his hand in?

Contact the OMRA secretary for clarification, its a small price to pay for peace of mind.

Regards

Simon
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on May 22, 2007, 11:07:06 PM
not much chance of my boat jumping out of the lake it has concret sides and theyre vertical, i do see your point though.by the way im running a clutch for that very reason you mentioned   ;)im also running a failsafe and all my battery leads are secured with tape so no chance of loss of power to the servos but ill look into it .
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on June 21, 2007, 07:29:34 PM
heres the lates video of my boat running,had a few problems with blanket weed but apart from that shes running well.had a problem with the engine cutting out after 20 mins running ,cant be dirt as i have a fuel filter fitted .any ideas most welcome  ;).
http://www.youtube.com/watch?v=6DkwfMavcqQ (http://www.youtube.com/watch?v=6DkwfMavcqQ)
Title: Re: new petrol powered deep v mono scratch build!!
Post by: w3bby on June 23, 2007, 10:41:28 AM
"Cut out", does it stop and stay stopped or will it start right up again?
When you bring it in after it has stopped is there fuel in the fuel line/filter?
Have you checked that air can get into the tank as the fuel is used up? (Vent still working)
Title: Re: new petrol powered deep v mono scratch build!!
Post by: martno1fan on June 23, 2007, 02:43:05 PM
"Cut out", does it stop and stay stopped or will it start right up again?
When you bring it in after it has stopped is there fuel in the fuel line/filter?
Have you checked that air can get into the tank as the fuel is used up? (Vent still working)
Ian thanks for that i believe it was the vent in the fuel cap it was bunged up so ive opened it up again i knew it was something simple why didnt i think of that dohh  ::)