Model Boat Mayhem

The Shipyard ( Dry Dock ): Builds & Questions => Pleasure boats, Sports, Race, Power and Leisure Boats: => Topic started by: martno1fan on July 14, 2009, 11:28:20 am

Title: New Comet 1/8 scale roundnose hydro
Post by: martno1fan on July 14, 2009, 11:28:20 am
Hi heres the second boat out of my moulds,did this one in yellow and red,i just pulled the parts this morning gave them a  quick wipe and took some pics.Both parts need joining then ill compound and pollish the boat.Before i join the deck ill be installing some bulkheads and stiffeners and engine rails for zenoah mounts.Still have the cowl to make which im doing today.Let me know what you guys think.
Mart
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: mook on July 14, 2009, 03:08:12 pm
I like it if that means anything  O0
I really like the look of these boats I might have to get one one day  :-))
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: andyn on July 14, 2009, 03:25:33 pm
Looks very nice, who's going to try one with one of these?

(http://i288.photobucket.com/albums/ll184/andyn_01/v30.jpg)
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: martno1fan on July 14, 2009, 04:47:21 pm
Looks very nice, who's going to try one with one of these?

(http://i288.photobucket.com/albums/ll184/andyn_01/v30.jpg)
Andy not me im not a nitro man but your welcome to have a go,this one will get a full mod zenoah unless someone makes me an offer i cant refuse Malc  ok2 lol.Just finnished glassing the cowl so i hope to have a pic of that in the next day or so.Thanks for the compliments guys much appreciated.Running weight of the finnished hulls with a rcmk and fuel is arround 15 1/2 lb or so.She runs very stable even in chop and turns like shes on rails,im hoping to sell a few and offer a turn fin with each one.
Mart
Andy how about one of these,remove part of the cowl maybe lol
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: martno1fan on July 14, 2009, 04:52:08 pm
something like this lol
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: mook on July 14, 2009, 04:58:15 pm
I would want at least a turbo V12  O0
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: andyn on July 14, 2009, 05:44:38 pm
Right well that engine's 600 with pipes and headers, plus radio kit, plus running gear, plus hull in the first place....

Can we have a whip round?
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: Ramon on July 14, 2009, 10:01:10 pm
Nice work Mart :-)), the V8 should do nicely! keep the pics coming on the build up. Is this a moulding of your Rocket?

Lovely engine Andy, is it one of those made from unobtanium? ;)









Title: Re: New Comet 1/8 scale roundnose hydro
Post by: andyn on July 14, 2009, 10:17:09 pm
They're made by my favorite engine producers, the Russians. Provided you can get hold of Paul Firmin, you can get hold of the engine.

http://www.precision-in-perfection.co.uk/engprice.htm

Fancy a go at it do we Ramon? Well volunteered :-))

Just work out how you're going to get two 90 sized pipes in it, and how you're going to keep it on this planet...
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: Ramon on July 14, 2009, 10:33:54 pm
No, don't think so Andy

As I say - unobtanium! and b-----y unaffordable I would guess. When I really began to get into this I soon found the PIP site but gave up in the end trying to contact them. Guess they aren't that interested in selling! Frustrating till you get told the score. Shame really but simply 'can't be dealing with it' I'm afraid, life's too short and there are other alternatives.

That said, Russian engines? Brilliant. Ran several and still have three 'STALKER' motors. An ST-40 from the initial batch of twelve and a 55 and 60. Made in the Ukraine but specifically for control line aerobatic models they are just superb. Piston and liner fit was extraodinary.



Title: Re: New Comet 1/8 scale roundnose hydro
Post by: martno1fan on July 14, 2009, 10:34:26 pm
Hi Ramon no its my own build,i built it from scratch but i did use the Rocket as its inspiration.I borrowed the sponson angles and the ride pads for this one with Joe at zipps permision,i just scaled them up accordingly.Then i just worked out how long she was going to be and the rest was trial and error till i got the shape and size i wanted.I made templates in card to test fit everything till i found what looked right.Then i cut things out in plywood and made a plug for my moulds.The Comet as i call her is 50" long compaired to the rocket whos 46" shes also 1 1/2" wider and a bit higher too.The tunnel is wider on mine too,makes her very stable but still fast.The red one in the vid was the very first one and i sent it with motor and hardware fitted as he wanted me to set it up for him so i ballanced things and set the strut depth same as the rockett and according to Wayne she didnt need any trimming at all she ran straight and true first time out which was a relief.The left sponson is bigger than the right,ther ride surface is 1/4" wider as are the ride pads this is to help right turns .I was so impressed with how well the rockett runs i asked permision to incorporate that into mine.That said she tracks straight too without any corrections once setup,def the best handling boat ive ever had by far.Fast stable and fun what more could i ask for   ;).So cool how these things slide round the turns,they look so real.I found the rocket a joy to build,has to be the simplest kit ever,you can build it in a week or two and it helped when i came to building the plug for this one .
Mart
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: andyn on July 14, 2009, 10:40:54 pm
***Moderated***   I'm not saying any more on the matter or I'll get wrist-slapped...

Views and opinions expressed by members do not necessarily reflect the views of Model Boat Mayhem or the site owner.
Forum Members are expected to exercise good manners and fair comment when posting and to avoid making statements which
may be seen as unfair, objectionable or unsubstantiated criticism of other parties.  

Martin it looks superb mate, I'm hoping to make BillD203 a circuit racer as part of my college engineering course, so I'll have to come to you for tips on moulding :-))

Where's the usual video of it running?
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: martno1fan on July 14, 2009, 10:57:24 pm
Tut tut Andy lol,i could tell a few storys about someone too lol.Anyway dam i forgot the vid lol,figured you had seen it before but here it is the maiden,unfortunatley he lost his camera woman so no new ones best not get into that or ill get slapped too lol  %).Circuit racer sounds like a good plan mate,ive been thinking along those lines too hmmm lol.
Mart

http://www.youtube.com/watch?v=lLJP0PrWkxs (http://www.youtube.com/watch?v=lLJP0PrWkxs)
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: andyn on July 14, 2009, 11:43:47 pm
I'm thinking of building a Sigma (ish) but a few inches longer, with a deeper V at the front and much shallower at the back, to make it kind of multi like. Also make the top a bit sharper and more streamlined. So it will end up like a bit like a combo of the Sigma and an Ikarus (which is basically a delta force, shhh...)

Going very well there, not a hydro man myself (well outriggers yes), but it does go very well :-))

(http://i288.photobucket.com/albums/ll184/andyn_01/sigma51big3.jpg)
(http://i288.photobucket.com/albums/ll184/andyn_01/fsrvik2small.jpg)
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: martno1fan on July 15, 2009, 11:22:28 am
You should start a  thread on the subject im sure you will get some good input ?.Im glad you liked the vid that was only its first days running,i think this hulls more than capable of high 60s with the right setup maybe more.Ill post some pics tonight of the cowl .
Mart
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: andyn on July 15, 2009, 02:50:00 pm
How about making one from Carbokevlar? If you could make it light enough it would be like the proverbial excrement off a chrome shovel. Would only need one or two layers too if it's not racing, so would be very light. It should easily be capable of high 60's yes, is it the tuned RCMK or the standard one? Rear exhaust I'm guessing?

Looks like I did get wrist slapped {-)
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: Ramon on July 15, 2009, 06:05:42 pm
Quite right too Andy you naughty boy ok2

Purely as a matter of interest you understand but what is the boat in the lower pic? It's size and power unit and who sells it. Just for interest that is.....

It does look a mean machine.



Title: Re: New Comet 1/8 scale roundnose hydro
Post by: martno1fan on July 15, 2009, 06:09:01 pm
Hi mate no plans as yet to make epoxy hulls,carbon or otherwise but maybe in the future.The red one has a stock rcmk, mine will have a full modded zenoah to start with then we will see about a modded rcmk.I use a side exhaust these boats are huge no need for rear exhaust.heres a pic of the red one with the rcmk.
Mart
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: andyn on July 15, 2009, 07:29:02 pm
Purely as a matter of interest you understand but what is the boat in the lower pic? It's size and power unit and who sells it. Just for interest that is.....

It's a Prestwich Ikarus, which is basically a copy of a Delta Force. For racing in FSR-V. Designed for a geared 3.5 but I'm running a straight drive Russian 7.5. Is a nice bit of kit, about 60% of the people in FSR-V 3.5 run an Ikarus.

Here's mine (an earlier one than the current model):

Oh and get saving, they start at £250 for the Glass Fibre one, and £350 for the Carbon Fibre :-)

(http://i288.photobucket.com/albums/ll184/andyn_01/DSCN3768.jpg)
(http://i288.photobucket.com/albums/ll184/andyn_01/wpe2.jpg)
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: brodjack on July 15, 2009, 09:08:38 pm


That looks mean Andyn,very sleek.Like the carbon one...
Brod..









Title: Re: New Comet 1/8 scale roundnose hydro
Post by: andyn on July 15, 2009, 09:11:27 pm
As I say, Boat £350, Engine about £300, Radio £200, Gearbox £50, Hardware £50, Fuel Tank £50, Fuel £30 a gallon...
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: martno1fan on July 15, 2009, 10:48:07 pm
Right enough about those ugly and i mean butt ugly multi hulls,this thread is about my scale hydro which is a thing of beauty  O0.
Mart
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: andyn on July 16, 2009, 12:02:22 am
A multi hull is a thing of elegance and beauty O0 ;)

When's one of these getting a proper engine then? Wheeeeeeeeeee......
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: martno1fan on July 16, 2009, 11:55:33 am
I guess beauty is in the eye of the beholder then  ok2.Just wanna try and keep the thread on topic no offense mate.The boat should be up and running in a few weeks if i can find the time to fit her out between other builds.Just need to source a new pipe system some new mounts and im good to go as i have all the hardware i need here.
Mart
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: ids987 on July 16, 2009, 12:49:18 pm
Looks very nice, who's going to try one with one of these?

(http://i288.photobucket.com/albums/ll184/andyn_01/v30.jpg)

Just in case anyone's a) Even thinking about it, and b) Able to get hold of one, please don't go near the A-180 with a bargepole. Not unless you just want an interesting engine to look at anyway.

It's a Prestwich Ikarus, which is basically a copy of a Delta Force.


Andy, The Ikarus is a multi (FSR-V) boat. The Delta Forces are circuit racing (eg FSR-O) boats. The hulls are completely different.
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: andyn on July 16, 2009, 02:23:40 pm
There is apparently a multi called the Delta Force, Greg was saying about the Ikarus being a copy of it on Sunday.

The A-180's do like to break a bit I think yes, but when they're running properly (for when they're running anyway) they're good engines. Of course there's no class for them anywhere...

Can't wait to see this thing go with the tuned motor in it :-))
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: ids987 on July 16, 2009, 03:00:22 pm
There is apparently a multi called the Delta Force, Greg was saying about the Ikarus being a copy of it on Sunday.

I'm not aware of a Delta Force multi, but it would be interesting if there is one. I think there is probably some confusion between the Ikarus and the FSRO boats.


The A-180's do like to break a bit I think yes, but when they're running properly (for when they're running anyway) they're good engines. Of course there's no class for them anywhere...


Apart from breakages, various owner / users reported a multitude of other problems as well. The crankshaft is / was two crankshafts inadequately fixed together, and ultimately (and generally quite quickly), ending up as two crankshafts again. They reportedly suffered serious air / pressure leaks from the crankcase, inadequate induction, and even used wooden dowels painted silver as crankshaft plugs. I trawled various sites a while back, and couldn't find anyone with a good word to say about them. Of course, all these things may have been sorted out, but I think it was more of a concept engine than anything else, so they probably just stopped making it. Very hard to get any meaningful info on these engines.
The A-180 would be legal in OMRA "C" class (up to 50cc), but the equivalent multi / FSR-V class is size limited to 20cc.
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: andyn on July 16, 2009, 03:21:07 pm
You should put a revised one in the Maka then Ian {-) O0
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: ids987 on July 16, 2009, 04:09:26 pm
You should put a revised one in the Maka then Ian {-) O0

They may just deserve each other. Wish I'd chosen any one of the other hulls I was considering at the time.
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: ids987 on July 16, 2009, 04:24:40 pm
Mart,

Sorry for biting, and replying to the off topic posts in the thread.
Please post some more on your hydro - to get us back on track.
Looking good. Will be good to see some running videos.
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: martno1fan on July 16, 2009, 04:28:36 pm
If i was ever to try an inline motor i think id go with a zenoah but id need a bigger boat for that power me thinks.It has been done ive seen one in Germany with an inline but i cant remember what motor it was but i dont think it was a zen.
Mart
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: martno1fan on July 16, 2009, 04:32:11 pm
Mart,

Sorry for biting, and replying to the off topic posts in the thread.
Please post some more on your hydro - to get us back on track.
Looking good. Will be good to see some running videos.

No worries mate i was just having a playfull pop at our Andy  ok2,heres a pic with the cowl on i just need to tidy her up and a bit of wet sanding to smooth it out,my fault the plug wasnt as smooth as id hoped .Might redo it or try and smooth out the mould more to save some work when i get time but for now its ok they come out pretty decent.I also added a pic of what the lightening strike will look like on the deck.Just ignore the masking tape holding things together  %).
Mart
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: andyn on July 16, 2009, 04:39:34 pm
 {-)

So what's the RRP of these things then? ;)
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: martno1fan on July 16, 2009, 04:50:25 pm


Can't wait to see this thing go with the tuned motor in it :-))
Andy me too im hoping its as good as the rockett but time will tell,be interesting to see how she compare's with the same or similar setup.Only change ill make is a quieter pipe.Oh and if you ever do decide to mould anything let me know ill try and give you a few pointers and warn you about the pitfalls,belive me its a learning curve doing it but can be rewarding seeing something come out of a mould you made yourself.I picked lots of guys brains before i attempted it and i made mistakes along the way but i got there in the end.My background is in wood not glass but ive learnt so much from the forums and by talking to guys who know what theyre doing.Im sure you will do a  good job if you do go ahead  :-)).By the way if your into riggers i can hook you up with some plans for a big one for zen or big nitro pm me for details.
Mart
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: martno1fan on July 16, 2009, 05:01:42 pm
{-)

So what's the RRP of these things then? ;)

Andy i put an add up for my boats offering to build em to order prices are on there,this is an introductory price for the hydro as im not really sure what to ask for them.Seeing as the cheapest ive seen in the uk for sale is well over 300 quid for a roundnose  i think mine are too cheap lol.While i dont claim them to be perfect the quallity is pretty good and so far havent had any complaints  on my hulls the vees anyway , ive only built one hydro to date but he likes it.As im not really a buisness i cant charge top dollar but i think im still too cheap lol.
Mart
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: ids987 on July 16, 2009, 05:15:22 pm
Just found the link to the vid. Looking good. I take it that was no.1 from the same mould ?
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: martno1fan on July 16, 2009, 05:51:08 pm
Just found the link to the vid. Looking good. I take it that was no.1 from the same mould ?
Hi yea that was the first one on its first days running not quite up to speed but pretty good all the same,i think hes had problems finding a good prop for the rcmk as it doesnt seem to like the same ones as the zenoahs i think best speed so far was arround 50 mph ,im thinking the right prop should get him much faster although he has tried a few.I was told by Scott Schneider to go smaller as they like to rev high and dont have the grunt of a good modded zenoah,ill need to find out what props hes tried and see what Scott suggests to try for him.He did say though that modded rcmk's will eat any zenoah,time will tell i supose .I just spoke to Wayne who has the first one he said he crashed it the other day but its repaired now but he lost his flex and prop etc,bust the motor mount rubbers.Im waiting to hear back what hull damage there was and how well she held up ,supose thats the test of its strength a good crash  :o.
Mart
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: martno1fan on August 08, 2009, 12:33:00 pm
Hi guys heres a quick update,managed to get the top compounded and polished up,and i installed the decals as i was too impatient and wanted to see how she looked.I'm visiting my parents tomorrow so thought id take her along,haven't joined the top yet but all the wooden frames are in apart from two in the sponsons that have to wait till ive glassed the seam on the inside.Hope you like her so far,still need to add details to the cowl like dummy exhausts and some small sponsor type decals and a dashboard ,steering wheel etc.Ill post a cpl of pics of the inside when ive charged the camera again.The cowl will have cooling slots cut into the front and the scoope opened up a tad too and ill install stainless mesh on the inside,should look cool.
Mart
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: Martin [Admin] on August 08, 2009, 01:15:33 pm

Very cool !  :-))
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: martno1fan on August 08, 2009, 03:05:46 pm
Thanks Martin shes coming along  ok2,cant wait to get this thing on the water i think shes gonna be a screamer  ;).heres a few more pics.I just need to round off the corners of the hatch opening but all rails and supports are installed.
Mart
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: mook on August 08, 2009, 03:21:03 pm
The more I see the more I like it, now how about a test drive  O0  {-)
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: martno1fan on August 08, 2009, 04:32:44 pm
The more I see the more I like it, now how about a test drive  O0  {-)

Lol once shes finnished your welcome to come test drive it  ok2,im now searching for a dummy  v 8 so i can install one into the cowl watch this space  ;) BLING BLING lol.
Mart
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: andyn on August 08, 2009, 04:54:56 pm
What size does this dummy V8 need to be? I'll have a look for ya :-))
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: Ramon on August 08, 2009, 06:59:54 pm
Hi Mart, this is starting to really look like 'the business'  :-)) :-))- love the red and the decals look good too. When do you start fitting it out?

Don't know if you tried the link on the AvL thread from Mr Zippy - some good looking T'Boats but alas all leccy powered!!!

Keep up that good work and keep us up to date with the pics.

regards - Ramon
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: martno1fan on August 08, 2009, 10:41:01 pm
I have actually seen one in the states pitty i cant get one over here?.Its a hemi motor from a dragster ive got a pic of one a guy used in his zippkits it looks awesome.Its 1/6 scale but 1/8 would work too.
Mart
What size does this dummy V8 need to be? I'll have a look for ya :-))
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: martno1fan on August 08, 2009, 10:46:38 pm
Hi Mart, this is starting to really look like 'the business'  :-)) :-))- love the red and the decals look good too. When do you start fitting it out?

Don't know if you tried the link on the AvL thread from Mr Zippy - some good looking T'Boats but alas all leccy powered!!!

Keep up that good work and keep us up to date with the pics.

regards - Ramon
Hi mate thanks i think ill start fittine her out in a cpl of weeks,i need to test some things out on the zippkits first .Ill try and get some numbers then ill strip the motor out and fit it in this one so i can compair the two etc.Ill use the same pipe and prop see what happens for now.Not sure if the dummy v 8 will fit because of the zenoah underneath but if it will it would be cool.Maybe i can move it arround see where it will fit,if not ill try some dummy pipes instead..
Mart
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: andyn on August 08, 2009, 11:08:40 pm
https://www.modelsforsale.com/catalog/product_info.php?products_id=374395

Job done :-))
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: martno1fan on August 09, 2009, 01:10:44 am
Thanks Andy but its not the one i want ,i want the one like in the pic i posted.Might need to order one from the states by the looks unless you know any other places .I apreciate you taking the time to look though  :-)).
Mart
Title: Re: New Comet 1/8 scale roundnose hydro
Post by: martno1fan on August 10, 2009, 08:25:12 am
Visited my parents yesterday and took a cpl of the boats to show them as they havent seen any of them before as my mum doesnt like to drive the distance nowadays.While there i took a few nice pics on the lawn and one of the Comet alongside the vee i now call the Sea Dancer.When we were there my dad told me of a nice new lake near to him,wow its ideal,no fish in it because the water is too acid so it will be a cpl of years before its stocked and the owner says we can use it anytime  :-)).
Mart