For the last couple hundred hours I have been using a Flowmaster
Hushpower II muffler. Also used by Tracy and some others I think.
It is done. The outside held up wery well, but I reciently removed it
and discovered that the insides have entirely disientigrated. Whatever
they used as packing has turned to a heavy clay-like substance ratteling
around in the bottom. She steel mesh is in pieces. I had been
thinking that the plane was not as quiet as it seemed 2 years ago.. go
figure.
So I was thinking about one of the DNA Mufflers someone mentioned.
They seemed nice because there is no packing, just steel dividers.
Unfortunately, it is a little to big around to fit in my current set
up. Instead, I ordered this muffler that also has steel
innards but no packing:
It is nice because it is going to be smaller and lighter than the
flowmaster (or the DNA), as well as less expensive - even the SS version that
I ordered.
Will report back in 2 years on its performance :-)
--
David Leonard
Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net