Exhaust pipe question.

[Finne]

have a look at this website.

look at the exhaust bend thing. (scroll down a bit)

http://www16.brinkster.com/blapingvin/boat.html

The pics are of my boat and engine (before i modded the hull).

it's quite obvious that the pipe cant be mounted like that.

I figure if I cut it half way through the bend and flip it, it'll be pointing the right way.

But if I do so, will the exhaust be to short? will it be to hot for the rubber?

will it affect the performance?

HELP! ???

 

[_laxmasta2039]

finne,

the only header i could find for my .18 was the same way...i just got a 90 degree elbow of heavy-duty plastic and clamped it on the end of the header with a hose clamp- the pipe wraps all the way around behind the engine, much too long if it was a high-performance racing setup but the only racing that boat will do is on Novice class so it doesn't really matter.

you should change you're hull to surface drive.

Joe

 

[Finne]

Yes I have changed it to surface drive.

I've cut off all the interior plastic and the skeg, and haveing a strudder built by a friend.

I'm hopeing the 0.98 hp engine will be enough to make this abs hull fly ;D

 

[Finne]

....but still. would it work better with the idea i suggested?

I do want as much effect as I can get out of this baby. I'm not sure I'm overpowering enough : ;D

 

[Don Templeton]

Hey Finne,

Go to Tower Hobbies and in the search box put in TOWC8150.

I think that manifold should work on your engine if you cut off the bend on the end.

Don

 

[Don Templeton]

It says it's an optional manifold for the tower Hobbies ST-15 engine.

 

[Don Templeton]

I can't seem to get the page to come up but here is a pic.

 

[Finne]

Yes I found the page.

thankyou.

but for $10.99 I'm still considdering cutting of the pipe i have.

The only difference I can see is that it would be a bit shorter then thatone, so...

I imagine I could put some simple cooling on the pipe if it gets to hot.

additionall question: Does a shorter then stock pipe alter the performance?

And if so, how?

 

[Don Templeton]

Finne,

The length of the pipe just has to do with when the engine comes on or off the pipe. You can hear and see it. I wouldn't worry to much about it until you run the boat and see how it does.

I don't think the heat on a short manifold will be any problem as long as you can get the coupler on tight.

Good luck,

Don

 

[Finne]

Thankyou.

The coupler, if that's what the rubber thing is called, is rather soft. So getting it on tight shouldn't be much of a problem.

 

[Ron Olson]

I've been using a Traxxas header on my .12 `rigger. Part #4550, $15.00 from my LHS. It has a tight 90 degree bend and is bent slightly upwards. If you have a really tight spot, use the one from a Pro boat Miss Bud.