X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [64.12.143.101] (HELO imo-m13.mail.aol.com) by logan.com (CommuniGate Pro SMTP 5.2.11) with ESMTP id 3429794 for flyrotary@lancaironline.net; Fri, 16 Jan 2009 13:31:04 -0500 Received: from WRJJRS@aol.com by imo-m13.mx.aol.com (mail_out_v39.1.) id q.d03.4d9fc23c (37117) for ; Fri, 16 Jan 2009 13:30:23 -0500 (EST) Received: from smtprly-mb02.mx.aol.com (smtprly-mb02.mx.aol.com [64.12.207.149]) by cia-ma01.mx.aol.com (v121_r5.5) with ESMTP id MAILCIAMA013-5c694970d23325c; Fri, 16 Jan 2009 13:30:24 -0500 Received: from webmail-dd13 (webmail-dd13.webmail.aol.com [205.188.104.13]) by smtprly-mb02.mx.aol.com (v121_r5.5) with ESMTP id MAILSMTPRLYMB027-5c694970d23325c; Fri, 16 Jan 2009 13:30:11 -0500 References: To: flyrotary@lancaironline.net Subject: Re: [FlyRotary] Re: DNA Muffler Date: Fri, 16 Jan 2009 13:30:11 -0500 X-AOL-IP: 66.253.96.220 In-Reply-To: X-MB-Message-Source: WebUI MIME-Version: 1.0 From: wrjjrs@aol.com X-MB-Message-Type: User Content-Type: multipart/alternative; boundary="--------MB_8CB461F9A016489_C88_10D5_webmail-dd13.sysops.aol.com" X-Mailer: AOL Webmail 40627-STANDARD Received: from 66.253.96.220 by webmail-dd13.sysops.aol.com (205.188.104.13) with HTTP (WebMailUI); Fri, 16 Jan 2009 13:30:11 -0500 Message-Id: <8CB461F99F7DB19-C88-85E@webmail-dd13.sysops.aol.com> X-Spam-Flag:NO ----------MB_8CB461F9A016489_C88_10D5_webmail-dd13.sysops.aol.com Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii" 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 To: Rotary motors in aircraft 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, 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 To: Rotary motors in aircraft 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. A Good Credit Score is 700 or Above. See yours in just 2 easy steps! ----------MB_8CB461F9A016489_C88_10D5_webmail-dd13.sysops.aol.com Content-Transfer-Encoding: 7bit Content-Type: text/html; charset="us-ascii" 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.

A Good Credit Score is 700 or Above. See yours in just 2 easy steps!

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