X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imo-d04.mx.aol.com ([205.188.157.36] verified) by logan.com (CommuniGate Pro SMTP 5.0.7) with ESMTP id 967283 for flyrotary@lancaironline.net; Sat, 04 Feb 2006 10:05:31 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.188.157.36; envelope-from=Lehanover@aol.com Received: from Lehanover@aol.com by imo-d04.mx.aol.com (mail_out_v38_r6.3.) id q.1d6.4df99745 (24895) for ; Sat, 4 Feb 2006 10:04:45 -0500 (EST) From: Lehanover@aol.com Message-ID: <1d6.4df99745.31161c8d@aol.com> Date: Sat, 4 Feb 2006 10:04:45 EST Subject: Re: [FlyRotary] Re: Mazda mufflers To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1139065485" X-Mailer: 9.0 SE for Windows sub 5022 X-Spam-Flag: NO -------------------------------1139065485 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 2/4/2006 9:40:39 AM Eastern Standard Time, eanderson@carolina.rr.com writes: Not the final word, but I tried SS Swarf in one of my muffler experiments and while it withstood the heat, I found that after several flights the pulses had hammered it into small lengths and blew most of it out the tail pipe. Inconel might be able to with stand the pulses. Ed Or, perhaps the stainless perforated tube within another tube. Or even three layers of tubes within a tube. Over half of the battle is getting the exhaust pulse below supersonic. One of the math majors could work out the spacing between the tubes. The perf tube does hold up just fine. There is no packing in my muffler. Lynn E. Hanover -------------------------------1139065485 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

In a message dated 2/4/2006 9:40:39 AM Eastern Standard Time,=20 eanderson@carolina.rr.com writes:

<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>Not the=20 final word, but I tried SS Swarf in one of my muffler experiments
and=20 while it withstood the heat, I found that after several flights the
pu= lses=20 had hammered it into small lengths and blew most of it out the tail=20
pipe. Inconel might be able to with stand the=20 pulses.

Ed

Or, perhaps the stainless perforated tube within another tube. Or even=20 three layers of tubes within a tube. Over half of the battle is getting the=20 exhaust pulse below supersonic.

One of the math majors could work out the spacing between the tubes. Th= e=20 perf tube does hold up just fine. There is no packing in my muffler.

Lynn E. Hanover

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