X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [129.116.87.170] (HELO MAIL01.austin.utexas.edu) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTP id 911116 for flyrotary@lancaironline.net; Fri, 22 Apr 2005 06:46:40 -0400 Received-SPF: none receiver=logan.com; client-ip=129.116.87.170; envelope-from=mark.steitle@austin.utexas.edu Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----_=_NextPart_001_01C54728.74FCB6CB" Subject: RE: [FlyRotary] Re: Aeroturbine muffler X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 Date: Fri, 22 Apr 2005 05:42:51 -0500 Message-ID: <87DBA06C9A5CB84B80439BA09D86E69E6CB67A@MAIL01.austin.utexas.edu> X-MS-Has-Attach: X-MS-TNEF-Correlator: <87DBA06C9A5CB84B80439BA09D86E69E6CB67A@MAIL01.austin.utexas.edu> Thread-Topic: [FlyRotary] Re: Aeroturbine muffler Thread-Index: AcVG3RkV3HbJXI5jTHGiDAWD08VZjAASu8XY From: "Mark R Steitle" To: "Rotary motors in aircraft" This is a multi-part message in MIME format. ------_=_NextPart_001_01C54728.74FCB6CB Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Jerry,=20 I'm thinking that 304ss will work in this application as the exhaust = gasses have had a chance to cool some before reaching the muffler. I = could ask them if they will make one (or more) from 321 material. Maybe = ask them what kind of a deal they would make us on a group buy. =20 Mark =20 -----Original Message----- From: Rotary motors in aircraft on behalf of Jerry Hey Sent: Thu 4/21/2005 8:47 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Aeroturbine muffler =20 It depends on the type of SS. Type 304 SS, the most common found in =20 mufflers and exhaust systems will not stand up "forever" to the heat of = a rotary. In fact, it might disappear quite quickly if the exhaust =20 blasts directly into a wall, such as a bend just outside the exhaust =20 port. In tests in my forge I was able to get pieces of 304 to flake =20 when heated to 1600 degrees. Of course thicker material dissipate heat = better and will last longer. Type 321 is much more heat resistant. It = might last forever depending on the thickness and the exhaust design. = Jerry On Thursday, April 21, 2005, at 08:06 PM, Mark R Steitle wrote: > > George, > Best I can tell, there is no packing in this muffler that can blow =20 > out. SS ought to handle the heat, and they're streamlined. Or, they = > are small enough to locate put in the cowl. > > Mark > > > > > -----Original Message----- > From: Rotary motors in aircraft on behalf of George Lendich > Sent: Thu 4/21/2005 4:55 PM > To: Rotary motors in aircraft > Subject: [FlyRotary] Re: Aeroturbine muffler > > Mark, > It doesn't look that different from most mufflers, I don't know if it = > has any packing or not. I had a quick look at the site but didn't see = > any comment. > George ( down under) > OK, while Ed is waiting for his side housings to arrive I thought I = > would ask if anyone has heard, or tried this muffler. Here is a snip = > from their description of the truck/SUV muffler model 3030, which has = > a 3' inlet/outlet. They also make 2.5", 3.5", 4" and 5" inlet/outlet = > models. It comes with a lifetime warranty . It looks to be = =20 > very streamlined, made of SS, lightweight, and has no packing. It =20 > sells for less than $200 (except for the 5" model). This looks like =20 > this just might be what I've been looking for. More info available at = =20 > http://www.pickupspecialties.com/Aero_Turbine/=20 > aeroturbine_mufflers.htm. Comments??? > > > > Mark S. > > (I have no affiliation with this company) > > The AT3030 is completely stainless steel inside and out. There is no = =20 > packing or moisture collecting material in the muffler. The =20 > hand-polished stainless steel AT3030 will give you the look and feel =20 > that you want and the performance you deserve. 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