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Bill,
I tend to agree, and believe I will have my outside
the cowl similar to what others have shown on their designs. It may be I can
make a part indent into the cowl, to accomodate some of the muffler but will
have to wait and see. This drawing shows what I have been thinking.
George (down under)
----- Original Message -----
Sent: Saturday, January 17, 2009 4:30
AM
Subject: [FlyRotary] Re: DNA
Muffler
Mark,
If I recall correctly you install has a tangental
collector or manifold prior to the manifold. The first point of contact is the
biggest worry for melting and distortion. If the muffler is downstream from
the exhaust port, (say near the exit of the cowl), you should be fine. I'm
looking forward to your success
:-)
Bill Jepson
-----Original Message-----
From: Mark
Steitle <msteitle@gmail.com>
To: Rotary motors in aircraft
<flyrotary@lancaironline.net>
Sent: Fri, 16 Jan 2009 9:50
am
Subject: [FlyRotary] Re: DNA Muffler
Bill,
I am going to order the full throttle collector model and see how it
does. Web site claims that it is good for 1000 hp. So, maybe it
can handle the rotary's abuse. We'll see.
Mark
On Fri, Jan 16, 2009 at 10:30 AM, <wrjjrs@aol.com> wrote:
Mark,
This
is as good a solution as I have seen. The biggest advantage being the "cross
bars" are supported by the tube. All solid parts is also good.
Bill
Jepson
-----Original Message-----
From: Mark Steitle <msteitle@gmail.com>
To: Rotary
motors in aircraft <flyrotary@lancaironline.net>
Sent:
Fri, 16 Jan 2009 6:05 am
Subject: [FlyRotary] DNA Muffler
Does anyone on the list have any real-life rotary experience
with the DNA Gen II muffler ( http://www.dnamufflers.com/DNA/main_DNA.html)? It is an
interesting design in that it has no packing material to burn out.
Instead, it utilizes ladder-rungs, which they call "internal sound
diffusers", which resemble a chain of DNA down through the center of
the muffler body, which is made of 304 SS. Their web site claims that
the racers use them with great success. From speaking with a sales
rep, they claim there the rotary crowd uses them too. I'm considering
purchasing one of their FULL THROTTLE COLLECTOR mufflers (P/N 1040), but
thought I would check to see if anyone else has used this style
muffler. This muffler has a 3" inlet/outlet with a 4" body. So
it is compact enough to fit inside my cowl. My exhaust header has
a 3" swivel joint, so it should be a good fit.
Mark S.
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