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1. 08:19 AM - Cracked Exhaust Msgs - 11/20/07 (John Markey)
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| Subject: | Cracked Exhaust Msgs - 11/20/07 |
try http://www.aircraftexhaust.net/
This website has great pictures of their designs - many of which are custom. I
have one of their simpler units and it works fine - made of stainless, with 4
slip/flex joints on an IO-320.
The exhaust should have slip joints between the pipes off of each cylinder, otherwise
the joints are prone to cracking from expansion. Also, the lower sections
need to be fastens to the engine with slip jointed brackets that dampen vibration
yet support the weight - rubber shock mounts or friction slip joints will
work. Look at a car and see how the car designers do this!
The larger the design, the more important it is to support the weight. Otherwise,
you will likely crack a head from the hung weight of the exhaust vibrating
the head(s) - not good.
Best of luck.
John
Glasair-List Digest Server <glasair-list@matronics.com> wrote: *
Time: 06:33:58 AM PST US
From: Craymondw@aol.com
Subject: Glasair-List: Glasair 2 FT exhaust
There is an article in this months Sport Aviation about a man that installed
a 200 Hp Lyc in a 2S FT. The magazine has a photograph showing the exhaust system
that pictures four straight pipes. Does anyone know where he purchased the
system and the part number? I installed a Stoddard Hamilton SS cross over
exhaust system that constantly cracks at the "Y's" and at the flanges.
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