Sent: Sunday, February 15, 2004 1:55
PM
Subject: [FlyRotary] muffler?
Greetings,
I'm working on mounting
this 14 pound Spin Tech muffler, and just have to ask a
question...
I know that rotaries are
painfully loud with no exhaust on them. I also know that the cast
manifold alone will help significantly, and that a turbo will reduce the noise
to about normal Lycoming levels. As I understand it, this is partly
due to the fact that there are twists and turns that the exhaust has to
negotiate, which reduces the speed, and eliminates the supersonic
pulses.
As it turns out, my
primary pipes will have to make three 90 degree turns before they get to the
collector. I've started wondering if these three turns are enough to
reduce the noise to an acceptable level. My gut feeling is that it
won't be enough, but I think some people are already running
with little to no muffling. I sure would like to eliminate that
muffler, but I'm not optimistic that it will be possible. What do you
think? Silly idea?
Cheers,
Rusty