X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.121] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTP id 2466638 for flyrotary@lancaironline.net; Sun, 11 Nov 2007 17:11:05 -0500 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.121; envelope-from=eanderson@carolina.rr.com Received: from edward2 ([24.74.103.61]) by cdptpa-omta02.mail.rr.com with SMTP id <20071111221028.OCQN26419.cdptpa-omta02.mail.rr.com@edward2> for ; Sun, 11 Nov 2007 22:10:28 +0000 Message-ID: <000901c824af$f6048ff0$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Burns Stainless Drag Muffler Date: Sun, 11 Nov 2007 17:12:33 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0006_01C82486.0CD89FC0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3138 This is a multi-part message in MIME format. ------=_NextPart_000_0006_01C82486.0CD89FC0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Bob,=20 No doubt that wrapping the pipes will lower heat under the cowl, = however, it does make more difficult to detect cracks at an early stage. = Several years ago, a Velocity had a Powersport 13B power plant installed = and went down (fortunately without injury to anybody) and the cause was = a cracked header pipe that leaked hot exhaust gas and apparently caused = the fuel line to go into vapor lock. The engine ceased to delivery = sufficient power and the bird came down.=20 The accident was traced to a cracked header pipe of an exhaust system = which did have the tubes wrapped. Apparently the evidence indicated = the crack had developed over a period of time to the point of causing = failure. It was certainly implied that the wrap may have been the = reason the crack was not detected in time. No trying to sway you one way or the other, but my pipes are not = wrapped. I tried it on a Honda civic I turbocharged back in 1976 and = found the tubes deteriorated very quickly. Just another point of view. Ed ----- Original Message -----=20 From: BMears9413@aol.com=20 To: Rotary motors in aircraft=20 Sent: Sunday, November 11, 2007 11:04 AM Subject: [FlyRotary] Re: Burns Stainless Drag Muffler dunno.....kind of a dilemma huh. not like im going to hear a leak -------------------------------------------------------------------------= ----- See what's new at AOL.com and Make AOL Your Homepage. ------=_NextPart_000_0006_01C82486.0CD89FC0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Bob,
 
  No doubt that wrapping the pipes will lower = heat under=20 the cowl, however, it does make more difficult to detect cracks at an = early=20 stage.
 
Several years ago, a Velocity had a Powersport 13B = power plant=20 installed and went down (fortunately without injury to anybody) and the = cause=20 was a cracked header pipe that leaked hot exhaust gas and apparently = caused the=20 fuel line to go into vapor lock.  The engine ceased to delivery = sufficient=20 power and the bird came down.
 
The accident was traced to a cracked header pipe of = an exhaust=20 system which did have the tubes wrapped.  Apparently  the = evidence=20 indicated the crack had developed over a period of time to the point of = causing=20 failure.  It was certainly implied that the wrap may have been the = reason=20 the crack was not detected in time.
 
No trying to sway you one way or the other, but my = pipes are=20 not wrapped.  I tried it on a Honda civic I turbocharged back in = 1976 and=20 found the tubes deteriorated very quickly.  Just another point of=20 view.
 
 
Ed
----- Original Message -----
From:=20 BMears9413@aol.com
Sent: Sunday, November 11, 2007 = 11:04=20 AM
Subject: [FlyRotary] Re: Burns = Stainless=20 Drag Muffler

dunno.....kind of a dilemma huh. not like im going to hear a=20 leak



See what's new at AOL.com=20 and Make AOL Your=20 Homepage.
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