Bobby, I have my two Hushpower II mufflers
slung on the bottom. The top of the mufflers are approx 2-3” from
the bottom and my paint. I have no additional shielding although a sheet
of SS with some sort of insulation (fiber fax) would probably be a good
idea. But, I never go around to it and the paint is still there –
no flaking, no bubbling. Now since I have 2 mufflers, they likely do not
get quite as hot as one muffler with all the exhaust going through it. So
your mileage may vary
Ed
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Bobby J. Hughes
Sent: Thursday, August 13, 2009
10:08 AM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Moving
muffler to belly
I've had the plane down for a few weeks making several
changes. I would like to move my muffler out of the cowl to the airframe belly.
How much space should I leave between the top of the muffler and bottom skin?
My exit fairing hangs down about 5" below the airframe. What have others
done for heat shielding \ paint protection? Since the floor pans are
installed any riveting will have to be with blind rivets. Don't really want to
put a bunch of extra holes in the skin for this experiment. Any advice or
pictures would be appreciated.
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