----- Original Message -----

From: Mark Steitle

To: Rotary motors in aircraft

Sent: Saturday, January 17, 2009 6:04 PM

Subject: [Norton AntiSpam] [FlyRotary] Re: DNA Muffler

Mike,

If you go check out the DNA muffler, and please post a report for the group.  Be sure that you're looking at the Gen II and not the Gen I.  I'm told there is a big difference in the two.  The Gen II's are much more durable, or so I'm told.

I'm considering the 1040 because of the slimmer 4" body.

Mark

On Sat, Jan 17, 2009 at 10:30 AM, Mike Wills <rv-4mike@cox.net> wrote:

Hope this turns out to be a good choice. A functional off the shelf muffler that holds up would be great. The website says there's a dealer just a couple miles away - might ride down today and see if they stock it. What muffler did you order Mark, the race series? With what inlet/outlet?

 

Anyone have any idea what B2 stainless is?

 

Mike Wills

RV-4 N144MW

----- Original Message -----

From: Mark Steitle

To: Rotary motors in aircraft

Sent: Friday, January 16, 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.