|
|
Thanks for sharing that info, Lynn....can you tell me how well the discs
held up to the rotary engine? Thanks again. Paul Conner
----- Original Message -----
From: <Lehanover@aol.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Wednesday, December 01, 2004 3:38 PM
Subject: [FlyRotary] Re: New Muffler Design
In a message dated 12/1/2004 10:12:42 AM Central Standard Time,
sqpilot@bellsouth.net writes:
<< Hi, Ed....funny you should mention that....I was just considering
ordering
a
Supertrapp disc muffler which sounds somewhat similar to what you are
doing,
with the exception that it just attaches to the rear of your pipe. The
one
that I am interested in is the 3" diffuser disc unit, as seen on
www.http://recerpartswholesale.com/supert2.htm One of my concerns,
however
is how well it might hold up, as any parts/pieces of a failed unit would
go
through my prop (pusher configuration), effectively cutting my flight
short
and/or ruining my day. Good luck with flight testing, etc. Please keep
us
posted. Paul Conner
>>
I recommend ordering two extra sets of diffusers for the Super Trap. It
will
kill the power, but does cut down the noise. When we ran at Charlotte
Motor
Speedway we had to add on of those to get down to 105 dB. There is nothing
to
absorb sound at that track. A NASCAR race must be amazing to hear. I think
those
things started out as a spark arrestors for diesel trucks used in National
forests.
I think a conical shape in the exit would have been less of a drag than
the
flat plate, but we never went back, so I didn't work on it anymore.
Lynn E. Hanover
>> Homepage: http://www.flyrotary.com/
>> Archive: http://lancaironline.net/lists/flyrotary/List.html
|
|