----- Original Message -----
Sent: Tuesday, January 06, 2009 5:01
AM
Subject: [FlyRotary] Re: 20B install
issues overcome
I have a collection of discarded/destroyed/melted mufflers.
I'm still on the lookout for the "perfect muffler". I'll let you know
when I find it. So far, the only thing that works every time is the
Lighspeed 33G.
Mark
On Mon, Jan 5, 2009 at 9:14 PM, Mike Wills
<rv-4mike@cox.net>
wrote:
At one point a few months ago I added a
SuperTrapp to my existing exhaust just to see if it would tame it a little.
Cost me about 500RPM on the top end with little or no improvement in the
sound output.
Mike Wills
----- Original Message -----
Sent: Monday, January 05, 2009 11:49
AM
Subject: [FlyRotary] Re: 20B install
issues overcome
Earnest,
I believe that the SuperTrapp muffler is an
example of a band gap device and it worked well, if properly tuned.
I
think the large block idea has merit too, but you will have to allow
enough thickness to prevent the tubes that see the exhaust first to fight
the harmonic vibration and heat. Different size diamonds in the exhaust
stream might also help fight harmonics.
Bill Jepson
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