Jett Eng. In-cowl muffler

Jett Eng. In-cowl muffler

Post by jjvb » Fri, 29 Oct 2004 21:13:01



Anyone tried a Jett Engineering in-cowl muffler?  I would like to try one
with an OS91 FX.  I have an app where I don't want to hack up the front of
the plane and the cowl to make a traditional muffler fit.  Their site
http://www.jettengineering.com/accy/turbo.html  indicates they get better
performance with it than the stock OS muffler.

Thanks.

 
 
 

Jett Eng. In-cowl muffler

Post by Paul McIntos » Fri, 29 Oct 2004 21:37:48


Just about anything will give better performance than the stock muffler.
Give Dub a call.  He will answer any questions you have.

--
Paul McIntosh
http://www.rc-bearings.com

Quote:
> Anyone tried a Jett Engineering in-cowl muffler?  I would like to try one
> with an OS91 FX.  I have an app where I don't want to hack up the front of
> the plane and the cowl to make a traditional muffler fit.  Their site
> http://www.jettengineering.com/accy/turbo.html  indicates they get better
> performance with it than the stock OS muffler.

> Thanks.


 
 
 

Jett Eng. In-cowl muffler

Post by Cain » Sat, 30 Oct 2004 06:09:26


Quote:
>Anyone tried a Jett Engineering in-cowl muffler?  I would like to try one
>with an OS91 FX

While I am very partial to Dubb Jett products, I hate to admit that I had a
good deal of trouble with one of those on a ST .90
I never could get it to stay on the machine. It would vibrate loose no matter
what I did. It has enough pressure so that when the engine is right, a loss of
that pressure will result in so lean a mixture that the engine quits right now.
If you are a bit too  rich the engine will pulsate. IMO it is even less
tolerant to mixture than a pipe.
I have a couple that might be traded! Just joking. :)
 
 
 

Jett Eng. In-cowl muffler

Post by jjvb » Tue, 02 Nov 2004 22:35:32


Thanks for the replies.

John VB


Quote:
> >Anyone tried a Jett Engineering in-cowl muffler?  I would like to try one
>>with an OS91 FX

> While I am very partial to Dubb Jett products, I hate to admit that I had
> a
> good deal of trouble with one of those on a ST .90
> I never could get it to stay on the machine. It would vibrate loose no
> matter
> what I did. It has enough pressure so that when the engine is right, a
> loss of
> that pressure will result in so lean a mixture that the engine quits right
> now.
> If you are a bit too  rich the engine will pulsate. IMO it is even less
> tolerant to mixture than a pipe.
> I have a couple that might be traded! Just joking. :)

 
 
 

Jett Eng. In-cowl muffler

Post by bob27 » Wed, 10 Nov 2004 04:03:48


might be of interest......

The TurboJett 10cc size underwent a small redesigned.  As of a month
ago, its now slightly "shorter" and I believe .25" larger in diameter.
Dub incorporated some design and performance improvements.  Also
improved its mass properties a bit and improved the
assembly/mounting/vibration that had been issues on some engines.
Testing over the summer on the OS91 and Jett BSE-90L showed favorable
improvements in all aspects.   :D

Any questions, feel free to ask.

Bob Brassell

--
bob27s
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