X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from eastrmfepo201.cox.net ([68.230.241.216] verified) by logan.com (CommuniGate Pro SMTP 5.4c3j) with ESMTP id 4951407 for flyrotary@lancaironline.net; Tue, 19 Apr 2011 20:00:16 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.216; envelope-from=tmann@n200lz.com Received: from eastrmimpo03.cox.net ([68.1.16.126]) by eastrmfepo201.cox.net (InterMail vM.8.01.04.00 201-2260-137-20101110) with ESMTP id <20110419235942.RTTP32549.eastrmfepo201.cox.net@eastrmimpo03.cox.net> for ; Tue, 19 Apr 2011 19:59:42 -0400 Received: from DSS03 ([98.168.254.7]) by eastrmimpo03.cox.net with bizsmtp id Zbzf1g0070ALyG202bzf2D; Tue, 19 Apr 2011 19:59:42 -0400 X-CT-Score: NA X-Authority-Analysis: v=1.1 cv=ULz780d5T88z7hstjrf3OHMsvJJmmk+pR+z3leaZ+oY= c=1 sm=1 a=B-AW_4qdGpYA:10 a=MMg-9RIa7iIA:10 a=8nJEP1OIZ-IA:10 a=u3n+HnEbI1wdzZeyJY7NnA==:17 a=7g1VtSJxAAAA:8 a=Ia-xEzejAAAA:8 a=aI9km6ZDP1iR1sHlkmUA:9 a=wPNLvfGTeEIA:10 a=Qa1je4BO31QA:10 a=u3n+HnEbI1wdzZeyJY7NnA==:117 X-CM-Score: 0.00 Authentication-Results: cox.net; none Message-ID: <7193F569196845A19648745723A311D3@DSS03> From: "Thomas Mann" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Burns Stainless Muffler Failure Date: Tue, 19 Apr 2011 18:59:19 -0500 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 15.4.3508.1109 X-MimeOLE: Produced By Microsoft MimeOLE V15.4.3508.1109 I'm putting a rotary in my canard aircraft. With all of these muffler failures I'm considering installing a cutout to bypass the muffler if needed. Is it unrealistic to consider using the muffler during ground operations and while in the pattern and just bypass the muffler for all other operations? (Pusher Configuration) -----Original Message----- From: Steve Thomas Sent: Tuesday, April 19, 2011 6:24 PM To: Rotary motors in aircraft Subject: [FlyRotary] Burns Stainless Muffler Failure I just did an inspection of my muffler and found that it was basically coming apart inside. This is a Burns Stainless, 17" 2-Stage muffler after 50 hours of flying behind a 2-rotor engine. Now, it could be that 50 hours is a reasonable life for something like this, I don't know. But, it certainly confirms the stories of muffler disintegration. I've inspected this muffler several times over the last 50 hours, but this is the first time that I've seen damage. But, when it comes apart, it really comes apart. It is unfortunate, as the muffler was really effective in reducing the noise and was light-weight. Best Regards, Steve Thomas _____________________ -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html