Mark,

 

 I'll be anxiously waiting for your feedback. With a 3" inlet/outlet and a 4"body I'm not going to be terribly surprised if it's not too effective thought. Need some room for those gasses to expand and lose some energy. But if it lives and has some effect it will justify my ordering one of the race or maybe even the street series muffler.

 

Has anyone figured out what "special B2 stainless" is? Sounds like it was created in the marketing dept.

 

Mike Wills

RV-4 N144MW

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

From: Mark Steitle

To: Rotary motors in aircraft

Sent: Saturday, January 31, 2009 6:48 AM

Subject: [FlyRotary] My New DNA Muffler

Hey Guys,

My new DNA muffler arrived yesterday so I thought I would post a couple of pictures with some information and first impressions.
 It appears to be very well built, all tig welded, and no packing to burn out.  It weighs just under 5#, which is half of what the Hushpower II weighs, so if it works, I will have reduced my fwf weight by 5#.  To be totally honest, my HPII probably no longer weighs 10# as most of the innards have long departed the a/c. 

The model I purchased was the Gen II - Collector Series, p/n 1040.  It has 3" inlet and 3" outlet, with a 4" dia. body.  Total length is21", body length is 15".  Literature says that it is good for 1000 hp, so it may have a chance of lasting at least 100 hrs on my 3-rotor running for hours at WOT.  We'll have to wait and see on the longevity.  I have a decible meter, so I can take some before and after readings.  Cost was $152 with shipping from Canada.

I'm going out to the airport this morning to see how well it fits.  More on how well it fits & works later...

Mark S.

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