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[martno1fan]

Whats happened to the mad makara men are they losing interest allready ?,seems like just the makara men left now  ::)

[Bill D203]

Hi Martin
I'm still hanging in there Seems that wet radio , wet engine, water in the fuel is still not damping down my membership to The Mad Makara club.  I will be out at Stevenage on Sunday morn as per norn rain or shine. The blagmister joined us last week. He didn't have a bad morn apart from losing his lid. But Martin you may well be right it dose seem very quite round here. The 1st OMRA race is at Eastbourne next week. Maybe they have all got there heads in there boats. :) I can't make it next Sunday as I have a prior arrangement . It whould be a hell of a drive from Great Yarmouth to Eastbourne and back again.

[martno1fan]

Too right dont let a few mishaps get you down mate  ,it is very quiet in here hence my little joke  .wait till you see my new project its going to be something very diff thats for sure.When it arrives ill start a full build thread and post a few pics along the way.
Mart

[Bill D203]

Well Been to the lake this morn. The boat was running real sweet till there was this very loud noise. Oh dear I said Then I got the boat in and found this .  :( :( :( SNAP !!!!!!! :( :( :( :( OH Blow this..........................

[martno1fan]

Well Been to the lake this morn. The boat was running real sweet till there was this very loud noise. Oh dear I said Then I got the boat in and found this .  :( :( :( SNAP !!!!!!! :( :( :( :( OH Blow this..........................

Ouch that sucks what happened mate ?

[Bill D203]

Hi Martin
If only I knew?? It was running just fine, Then Pop bang and that was the end of that .  Been to see Barry (Bluefishy) . Bit the bullet now got a Sikk to fit in. 
All I to do is fit it and run it in now.
Oh Happy days
Your Skint, peed off,  Bill

[martno1fan]

Did she over heat  cooling problem maybe? not enough oil in the fuel doubt that ? what broke ? did the whole head explode or just near the exhaust manifold.maybe the pipes too heavy not enough  flexability in the exhaust setup?.im thinking out loud here as theres been a few problems like these on other boards with the problems i mentioned.wouldnt want it to happen to your new sikk.I ran my boat today in 8" chop man that was scary did a complete submarine at 38 mph,that was the fastets speed i got from her on the day ,that was at 3/4 throttle in rough water running a new 6717/3 prop man what a diff it made scared the hell outa me in those conditions.Should be fast in better water  ,too scared to give her full throttle today  ::).Posted a short poor vid on the seaquell thread.
Mart

[Bill D203]

Hi Martin
I think 2 things. 1 the Ex is not flexible enoufh. 2 It had a hit into the wall Weds last week and it maybe did some damage when it hit??
I am now having a look around for a ex system Header to Tail pipe.
A
Glad to here you had a good Day.
Bill

[martno1fan]

Checkout dave marles site he has plenty depends on your wallet i guess  ,cant blue fishy help you out?.what header are you looking for ?depends how quick you need it but bonzi and hanson have decent pipes headers etc.

http://www.prestwich.ndirect.co.uk/gaspipes.htm

http://www.bhhanson.com/hbprod6.htm

http://bonzisports.com/catalogue/advanced_search_result.php?keywords=tuned+pipe&categories_id=43&inc_subcat=1&manufacturers_id=&pfrom=&pto=&dfrom=&dto=&x=69&y=21

[Bill D203]

Cheers for that Martin.
Been doing a bit in the shed. I have a 90 pipe which I am going to try out. If not I may end up taking the pipe out of my old boat for a try. It is being used on a Zen 26.  Lots of  things to try out . I think the MKZ pipe is to big and may have caused the prob. As and when it rain stops I will sart the new engine up.

[martno1fan]

What .90 pipe is it? i have one i was going to use on a zen its a rossi .90 pipe i believe ,no water cooling but has built in silencer wether ill use it i dont know its black coated with heat proof epoxy coating or something?.i orriginally wanted it for my strimmer motor but couldnt get a header to fit the motor without major work so its only been used once to test.is yours anything like this one?.

[ids987]

Mart,

That does look like a Rossi pipe, and by the length, I'd guess it's the .90 version (I had a couple of their 40-60 pipes).

Bill,

Just thinking, how about a clamp - to clamp the header pipe to or around the block somehow. I guess the biggest challenge would be the position of the carb / inlet and the fins. If you can fashion something up though - so that the weight is not hanging on the mounting bolts, I reckon it can only be a good thing.
As an example, I've seen arrangements for nitro engines with a cut jubilee clip - where the ends bolt to the header, and the clamp goes around the block. I know it's not quite that simple on your engine, but I'm sure there's a way there somehow......

[Bill D203]

Hi Ian
Yes I no what you mean. I have now got a Alloy 90 pipe in it now with a rubber mounting holding it on to the boat. I just think that MKZ pipe was to much. This new set up is lighter and better surported, the engine move freely on the mounts without any think stopping it. Just fitting an oiler to the flex now.
Barry (bluefishy) told me I have to run the new engine in at 1/3 power for at least 3 Lt of fuel. Thats going to take about 1 1/2 hr on the water. Oh happy days.
Been thinking I could bulid a outrigger out of the old engine during next winter.  I would like to see there faces at the lake if I did

[ids987]

Been thinking I could bulid a outrigger out of the old engine during next winter.  I would like to see there faces at the lake if I did

What, you mean with the same crankcase ? That would turn a few heads.
I remember one of the first OMRA races I went to at Eastbourne, someone turned up with an Enforcer ManO'War, with an unsilenced pipe on a Zen. Now that was loud.....
The young un' at our club's already doing his best - running that Merco 61 with air-coupled manifold. Maybe we could have a "no silencers day". I've got a few unsilenced nitro pipes at home. They should really howl a treat on some of my engines. I'm sure Greg must have some too. We might need to line up a new lake first though.....

[martno1fan]

Bill what pipe are you going to use on the new header ? if you use one with o rings that will give you enough movement as to stop any unwanted vibration issues that can cause failure at the exhaust flange .My hanson just hangs on the header and isnt supported till it gets to the transom then i use a piece of high temp silicone from a rc car exhaust round the pipe where it exits the transom i cut the exit hole a snug fit and thats all that holds it in place it doesnt vibnrate or move at all ,works a treat.i do have some wire running from one of the water cooling nipples on the exhaust to a jubilee clip on the header pipe that stops it sliding out and losing its tune though.

[Bill D203]

Hi Martin
I the pipe came off a 90 Helli. The header pipe fit's in side a lose salve which then has Silicon tube over the joint. It all seems to move enough. It has a mount via a rubber vibration cupling to the boat. The whole things seems to move around OK.
I ran (on tick Over) the engine today and it sounds sweet. I take it while running in period you should add a bit more oil in the mix.
I may well get home on Thurs to get to or local lake to give it a run. Slowly of course.
Bill

[martno1fan]

one tip for you is swap the silicone for teflon as its more heat resistant the silicone ones melt very quickly  ,as for running in i dont run more oil just run the motor rich and vary the throttle.i was told to run for 5 mins upto no more than 1/2 throttle then come in let motor cool completeley then repeat the process a cpl of times each time staying out 5 mins longer.Then once the tank of fuel has gone your good to go just dont go mad till youve done a few tanks and allways vary the throttle and short bursts of power till you feel confident shes run in ,16-1 oil ratio,some run non synthetic for first few tanks then swap to full synthetic but i never did that i have allways ran it on full synthetic oil and my motor runs sweet as a nut.Heck some guys over the pond dont even bother running them in at all and they get along fine .

[kit1947]

Hi there martno1fan, been reading your posts mate and you seem to be in the know. What class do you race in and what would you say would be the best class for a newbie
to start in ?
Have you taken any video of your boat actually racing that we could see ?

[Bill D203]

Well the rain held off long enough to get my new engine running in the water. Even at 1/3rd full throttle its seems to be a very happy result . It should be a big improvement on my old engine. The pipe seems to be working fine. Not to much noise , so the rest of the Stevenage MBC are not complaning. Looking forwards to a lot more running in and then full steam ahead.
Good to here from a model boater from NZ.
Bill.

[2772e]

kit,

Mart has not managed to jin us for a race yet? If you want to see some video have a look on utube under windemere dolphins or omra85

I started racing last year and for easo of getting on the water and running costs D class is by far the easiest. spark ignition petrol boats up to 50cc. nice cheapish petrol and easy to start. Well compared to glow motors.

Do they have a series in NZ?

Regards

Simon

[martno1fan]

Hi Kit racing isnt my bag to be honest im juts a sports boater,racing gets too full on id rather just enjoy myself  .Simon they do have a boating body in Newzealand my mate lives there.Not sure what kind of racing they do mind ?.Bill im glad shes working out for yaa mate,im serriously considering a sikk for my hydro as they come with mounts which helps .
Mart

[martno1fan]

Hi Bill just a warning for you theres been a few sikk motors doing this in the states,seems the white gasket on them is the culprit as its too soft and if you over tighten your piston has little to no clearance and oops and so they change them for a blue one or copper.You might want to check which one yours has just in case?.The two bolt head doesnt help especially if you flip i guess,seeing this has made my mind up ill be sticking with zenoah.Have a read here>> free to sign up .
http://www.jrcbd.com/showthread.php?t=12317

good place for copper gaskets
http://stores.ebay.co.uk/Daves-Discount-Motors

[2772e]

Off to Eastbourne for a whet and windy start to the 2008 racing series.

Fingers and toes crossed!

Picture of the new paint scheme, not sure whether th add the Red Bull stickers.

What do you think?

Regards

Simon

[Blagmeister]

Well Simon,

I have to say I think the new colour scheme looks great! Very upmarket feel to it!     Personally I think you should add the Red Bull  decals so that there are at least 2 of us with motorsport stylee paint schemes!

Regrettably, as you probably realise, I didn't make it to Eastbourne today. I finally got my boat finished late last evening at about 5pm and shot over to Kingsbury for a quick test and to try to get it to run a bit better. Sadly, it was still porpoising like mad and after fiddling with the rudder and strut angle and then finally spinning out in an explosion of spray and 2-stroke smoke, [I managed to keep it going but narrowly missed bisecting a swan in the process!], I decided to call it a day as the light was fading fast.

When I got back home I started to do a minor strip to clean it up and as I was emptying the bag tank I noticed it was spraying fuel everywhere from a pinhole! An errant fibreglass strand must have pierced it. :(  My test bag-tank is only 500ml so no spare tank, so no racing. In view of the way it is handling, it was perhaps a blessing in disguise as I would have probably trashed either my boat or someone else's with the way it is handling at present. [I had said to my lad earlier on in the day that Fate clearly didn't want me racing this weekend!]

So....

Discretion [and the need to get it running straight before swapping paint with some of you guys] being the better part of valour, I elected to stay in home waters today and get some testing and more running-in under my belt.  I spent a good 4 hours at Kinsgbury today and bumped into Andy Rennie who very kindly gave me plenty of sage advice.  The boat is now throttling very nicely [even thought it is still a very long way from being run-in], but no matter how much weight I chuck in the bows, it still porpoises to varying degrees. Also, when I give it the beans, it starts to get a bit of torque shimmy on it  so it looks as though trim tabs are on the cards, according to Andy.

Back to the workshop......  ::)

I hope you all had a great day [in the wind and rain] and all the boats came back more or less in one piece!

Cheers

Phil

[bigtee]

hi phil , glad to here you had a run today but no fuel tank / bag is a pritty poor excuse for not coming down to eastboune today  alway some one to lend some one some thing !!!!!!!!!!!!!!

weather prity poor but you and the others missed a good days racing with two , yes two heats in some windy chopy condictions

simon had a splashing good  time , but i will let him fill you in 

tony