Paul wrote:

You're probably right about cantilevering the whole works off of the exhaust
flange, but rather than change the drawings, I'll just send them off to you
and you can modify them as you like. Any gussets can be omitted in favor of
strapping or any other type of re-inforcement.
Expect them in a few days.
Brian Trubee
Redmond, WA

The pipes will run about 1400 to 1800 F and will try to expand against
these gussets. This will cause cracks. I think you should forget the
gussets and go with a conventional muffler hanger and let the muffler move
away from the side of the engine when the pipes get hot and expand.

BTW I was looking at a RAM Cessna 414 twin with water cooled
turbo charged Continental Voyager engines and the 321 SS exhaust systems
cost $5000 per engine side! That means the airplane needs four for a grand total
of $20,000 for the exhaust systems alone. An A&P friend of mine maintains
it for the owner who, BTW, loves the airplane. This exhaust system must be serviced
every 100 hours with special slip joint compound  or the slip joints seize up and the
pipes from the cylinders buckle and crack.

With all the heat from the rotary exhaust we are still way better off.
Count your blessings.

Paul Lamar

Opps sorry about that last image folks. I forgot a processing step.
Delete the message from your email and I will send a much smaller version
for you to store in your ACRE NL folder. Sorry.

Paul Lamar
 
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