X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from QMTA06.emeryville.ca.mail.comcast.net ([76.96.30.56] verified) by logan.com (CommuniGate Pro SMTP 5.2.11) with ESMTP id 3431360 for flyrotary@lancaironline.net; Sat, 17 Jan 2009 14:03:55 -0500 Received-SPF: pass receiver=logan.com; client-ip=76.96.30.56; envelope-from=hoursaway1@comcast.net Received: from OMTA05.emeryville.ca.mail.comcast.net ([76.96.30.43]) by QMTA06.emeryville.ca.mail.comcast.net with comcast id 4fnB1b00L0vp7WLA6j3Mvh; Sat, 17 Jan 2009 19:03:21 +0000 Received: from sz0081.ev.mail.comcast.net ([76.96.26.137]) by OMTA05.emeryville.ca.mail.comcast.net with comcast id 4j3M1b0012xV6SL8Rj3MAY; Sat, 17 Jan 2009 19:03:21 +0000 Date: Sat, 17 Jan 2009 19:03:20 +0000 (UTC) From: hoursaway1@comcast.net To: Rotary motors in aircraft Message-ID: <637198231.4653751232219000977.JavaMail.root@sz0081a.emeryville.ca.mail.comcast.net> In-Reply-To: <515124558.4651321232218090272.JavaMail.root@sz0081a.emeryville.ca.mail.comcast.net> Subject: Re: [FlyRotary] Re: DNA Muffler MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_236036_893811228.1232219000976" X-Originating-IP: [24.11.153.228] X-Mailer: Zimbra 5.0.9_GA_2533.RHEL5_64 (ZimbraWebClient - IE6 (Win)/5.0.9_GA_2533.RHEL5_64) ------=_Part_236036_893811228.1232219000976 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable I was thinking (don't tell my wife she will just find more for me to do)=C2= =A0 we are making efforts to find an exhaust/muff. sys. that lasts =C2=A0"a= long time"=C2=A0 well like I said , was thinking, about other aircraft I h= ave owned/flown & the maint. involved with the exhaust sys., none of them w= ent longer than 200-300 hrs. before work/repairs had to be performed, sound= s like we are already there. I 'm using the Hushpower II , but do not have = any helpfull hints have 12 hrs on eng. run so far, would love to here of so= meone finding the golden goose here & hope no one gives up prematurly inclu= ding myself, just thought I'd throw the that into the mix to say???=C2=A0 I= t is - 10 deg.F. here in MI, I need to get dressed & get my butt to the air= port & finish the gearleg fairings, but I will have to go outside to do tha= t, dam.=C2=A0=C2=A0=C2=A0 David R Cook=C2=A0 RV6A=C2=A0 ROTARY=C2=A0 (2 fee= t snow in front of the hanger door, at least it is heated, EAA builders han= ger)=20 ----- Original Message -----=20 From: "Mike Wills" =20 To: "Rotary motors in aircraft" =20 Sent: Saturday, January 17, 2009 11:32:07 AM GMT -05:00 US/Canada Eastern= =20 Subject: [FlyRotary] Re: DNA Muffler=20 Mark,=20 Should have read more thoroughly - I see you listed the part number for wha= t you ordered. My bad. Still curious about B2?=20 Mike Wills=20 RV-4 N144MW=20 ----- Original Message -----=20 From: Mark Steitle=20 To: Rotary motors in aircraft=20 Sent: Friday, January 16, 2009 6:05 AM=20 Subject: [FlyRotary] DNA Muffler=20 Does anyone on the list=C2=A0have any=C2=A0real-life rotary experience with= =C2=A0the DNA Gen II muffler ( http://www.dnamufflers.com/DNA/main_DNA.html= )?=C2=A0 It is an interesting design in that it has no packing material to= burn out.=C2=A0 Instead, it utilizes ladder-rungs, which they call "intern= al sound diffusers",=C2=A0which resemble a chain of DNA down through the ce= nter of the muffler body, which is made of 304 SS.=C2=A0 Their web site cla= ims that the racers use them with great success.=C2=A0 From speaking with a= sales rep, they claim there the rotary crowd uses them too.=C2=A0 I'm cons= idering purchasing one of their FULL THROTTLE COLLECTOR mufflers (P/N 1040)= , but thought I would check=C2=A0to see if anyone else has used this style = muffler.=C2=A0 This muffler has a 3" inlet/outlet with a 4" body.=C2=A0 So = it is compact enough to fit inside=C2=A0my cowl.=C2=A0 My exhaust header ha= s a 3" swivel joint, so it should be a good fit.=C2=A0=20 Mark S. ------=_Part_236036_893811228.1232219000976 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable <= div style=3D'font-family: Arial; font-size: 12pt; color: #000000'>I was thi= nking (don't tell my wife she will just find more for me to do)  we ar= e making efforts to find an exhaust/muff. sys. that lasts  "a long tim= e"  well like I said , was thinking, about other aircraft I have owned= /flown & the maint. involved with the exhaust sys., none of them went l= onger than 200-300 hrs. before work/repairs had to be performed, sounds lik= e we are already there. I'm using the Hushpower II, but do not have any hel= pfull hints have 12 hrs on eng. run so far, would love to here of someone f= inding the golden goose here & hope no one gives up prematurly includin= g myself, just thought I'd throw the that into the mix to say???  It i= s -10 deg.F. here in MI, I need to get dressed & get my butt to the air= port & finish the gearleg fairings, but I will have to go outside to do= that, dam.    David R Cook  RV6A  ROTARY  (2= feet snow in front of the hanger door, at least it is heated, EAA builders= hanger)
----- Original Message -----
From: "Mike Wills" <rv-4mike= @cox.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline= .net>
Sent: Saturday, January 17, 2009 11:32:07 AM GMT -05:00 US/Cana= da Eastern
Subject: [FlyRotary] Re: DNA Muffler

Mark,
 
Should have read more thoroughly - I see y= ou listed the part number for what you ordered. My bad. Still curious about= B2?
 
Mike Wills
RV-4 N144MW
----- Original Message -----
= From: Mark Steitle
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.ht= ml)?  = 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 d= iffusers", which resemble a chain of DNA down through the center of th= e muffler body, which is made of 304 SS.  Their web site claims that t= he racers use them with great success.  From speaking with a sales rep= , they claim there the rotary crowd uses them too.  I'm considering pu= rchasing one of their FULL THROTTLE COLLECTOR mufflers (P/N 1040), but thou= ght I would check to see if anyone else has used this style muffler.&n= bsp; This muffler has a 3" inlet/outlet with a 4" body.  So it is comp= act enough to fit inside my cowl.  My exhaust header has a 3" swi= vel joint, so it should be a good fit. 
 
Mark S.
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