You can do a NASCAR trick.
They make a exhaust connector that welds to both pipes and a metal
ring goes around both flanges. The connection is exhaust tight but gives you
a pivot point for the pipes.
Doug
PS Still have your Pitts?
I got to fly one last year loved it...
-----Original Message-----
From: Bennett Cullen-P21988 <Cullen.Bennett@motorola.com>
To: 'Tigers' <tigers@autox.team.net>
Date: Thursday, September 02, 1999 11:44 AM
Subject: Re: Noises and Cracking
>Hi to the list,
><Lurking mode off>
>
>>Date: Wed, 1 Sep 1999 17:26:40 EDT
>>From: JHef101@aol.com
>>Subject: Re: Exhaust
>>
>>Larry,
>> I'm referring to the H pipe cracking at the welds doe to the
exhaust
>
>>pulses not being synchronized and the H pipe makes the entire system too
>>ridgid. I had the same problem with a cross-over exhaust system on a Pitts
>>aerobatic aircraft that I built some years ago and traced it back to the
>same
>>cause. At any rate I don't think that the horsepower loss is significant
>>enough to justify going with an H pipe with it's inherent problems, if
>Cullen
>>is lurking maybe he can shed some light as he and I had this discussion
>about
>>2 years ago.
>>
>>
>>Jeff Hefner
>>B9470028
>>
>
>I have been running the Flowmasters with 2" pipes and the "H" crossover for
>several years and about 3000 miles now with no cracks or problems (just
>lucky I guess). When I installed the whole system, I did buy new hanger
>mounts for everywhere. Maybe that makes the difference?. I even got into a
>fender bender last year without cracking anything in the exhaust system. I
>have given some thought into just what I will do when I have to drop the
>pipes for whatever reason. In that event I plan to cut the center of the
"H"
>and put a sleeve on it with clamps to go back. I will also cut the bottom
of
>the header pipe (just prior to the frame holes) and install 2-bolt flanges
>with an asbestos (or equivalent) gasket. Hopefully that will be a long time
>in the future. I still love the sound it puts out (sound activated
>testosterone generator).
>
>p.s. Has anyone heard of ANY planning toward a European Y2000 event/rally?
><Lurk mode on>
>Cullen Bennett
>Tempe, Arizona USA
>
>
|