----- Original Message -----
Sent: Thursday, January 10, 2008 7:32
PM
Subject: [FlyRotary] Re: Fw: [FlyRotary]
Re: Dennis' Muffler
Ed,
I installed a Hushpower II on my 13b and it was noticeably quieter ....
for a while. It is now quite noisy and I intend to put the old square
muffler back on. The Hushpower has turned powder gray on the out side
like it has become hot
Well, you could be correct, Mark.
However, even looking at the exploded view of
the one you posted, it still looks to me that the only packing shown is the
insulation packing (looks like approx 1/2" thick") around the
peripheral of the shell.
Now that is the resonator, while I have the full
up muffler - and I carefully checked for packing because my experience has
shown no sound absorbent packing will last more than a few hours with my
engine. I could detect no packing material by shinning a light down
the ends - but, that does not prove its not there. Just see no
evidence of it.
I even tried some 2000F rated ceramic material
for packing - it withstood the heat just fine, but the pulses blasted
it into pieces within 1 hour of flight time (perhaps even less). 13Bs
without the turbo block or the Renesis may be kinder {:>)
My 0.02
Ed
--
Homepage:
http://www.flyrotary.com/
Archive and UnSub:
http://mail.lancaironline.net:81/lists/flyrotary/List.html
Never miss a thing. Make Yahoo
your homepage.