That’s because I was flying Low, Bob
{:>). Actually, the folks at my airfield apparently find the front
view considerably less loud that looking down the exhaust stack with the
hushpower. They claim they do not hear me come into the pattern like they
once did – but, yes, they can tell when I’m departing {:>).
I have some 1/8” aluminum brackets
that are held on by bolts and through some rubber grommets in the floor panels
(thicker plate backing on the inside) and into rivet nuts swaged into the
holes. Then I have an SS strap handing down from another bolt in the
aluminum bracket (also with a grommet). Then finally, I have some small
holes drilled in the aluminum brackets and two strands of safety wire that
the pipe rest in but does not put any pressure on it – its there as a
safe guard should the SS strap ever let go. I have a similar arrangement
in front of the muffler and in the rear of the muffler.
Ed
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Bob Perkinson
Sent: Tuesday, January 06, 2009
6:35 PM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re: My
Muffler experiments (long) was [FlyRotary] Re: Mistral muffler.
Ed,
I have not really looked closely at your muffler instillation. How do you
have the pipes and muffler supported under the fuselage?
As you probably know we could hear you long after you were out of sight when
you left Shady Bend.
Bob Perkinson
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