X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao102.cox.net ([68.230.241.44] verified) by logan.com (CommuniGate Pro SMTP 5.2.13) with ESMTP id 3596203 for flyrotary@lancaironline.net; Sat, 25 Apr 2009 00:49:36 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.44; envelope-from=alventures@cox.net Received: from fed1rmimpo02.cox.net ([70.169.32.72]) by fed1rmmtao102.cox.net (InterMail vM.7.08.02.01 201-2186-121-102-20070209) with ESMTP id <20090425044902.LXPX6112.fed1rmmtao102.cox.net@fed1rmimpo02.cox.net> for ; Sat, 25 Apr 2009 00:49:02 -0400 Received: from BigAl ([72.192.135.181]) by fed1rmimpo02.cox.net with bizsmtp id jgp11b00B3uzsQg04gp1Gw; Sat, 25 Apr 2009 00:49:01 -0400 X-Authority-Analysis: v=1.0 c=1 a=KAP0BmwkS8MA:10 a=B3uja9oFRokA:10 a=Eqm2ezd7BLnYmYyDEHsA:9 a=O_mbKfq1VnU5vu8xhSsA:7 a=48cuVX3Y37WOmzJ3KeCwiK5shA4A:4 X-CM-Score: 0.00 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Exhaust system wall thickness Date: Fri, 24 Apr 2009 21:49:58 -0800 Message-ID: <2265FC42F58443A4B918BDFB211C1F3B@BigAl> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6838 In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 Importance: Normal Thread-Index: AcnFBtuC9yenRGxyQuSB1ER0wyYv2QAYps8g with, and I found some notes about using SS handrail tubing, approximately 0.12" in wall thickness. If one were to build matching muffler components to attach to those tubes, would 0.12" be sufficient thickness (presuming 304SS or similar)? Thicker? Thinner? Chris; You're building an airplane. Weight matters. .035 inconel is good. Al G