X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imf24aec.mail.bellsouth.net ([205.152.59.72] verified) by logan.com (CommuniGate Pro SMTP 5.1c.5) with ESMTP id 1453296 for flyrotary@lancaironline.net; Tue, 10 Oct 2006 07:47:58 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.72; envelope-from=atlasyts@bellsouth.net Received: from ibm70aec.bellsouth.net ([68.215.125.27]) by imf24aec.mail.bellsouth.net with ESMTP id <20061010114729.LULV6642.imf24aec.mail.bellsouth.net@ibm70aec.bellsouth.net> for ; Tue, 10 Oct 2006 07:47:29 -0400 Received: from [192.168.0.219] (really [68.215.125.27]) by ibm70aec.bellsouth.net with ESMTP id <20061010114729.OVK14416.ibm70aec.bellsouth.net@[192.168.0.219]> for ; Tue, 10 Oct 2006 07:47:29 -0400 Mime-Version: 1.0 (Apple Message framework v752.2) In-Reply-To: References: Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: Content-Transfer-Encoding: 7bit From: Bulent Aliev Subject: Re: [FlyRotary] Re: Exhaust Update Date: Tue, 10 Oct 2006 07:47:27 -0400 To: "Rotary motors in aircraft" X-Mailer: Apple Mail (2.752.2) On Oct 9, 2006, at 11:15 PM, kenpowell@comcast.net wrote: > Hi Joe, > Just a heads up - it looks like your new "header flange to > pipe" (picture 5) was welded on the outside. I think that > 'acceptable practices' state that there should only be a tack weld > on the outside and the actual structural weld should be on the > inside. What does everyone else say? In any event be sure to > keep an eye on the welds. > > Ken Powell > Bryant, Arkansas > 501-847-4721 > C150 / RV-4 under construction Ken, I had the chance to inspect hundreds of aircraft exhaust systems from C-150 to the big twins. On 99% of them the flange is welded on the outside. I have seen only one model aircraft that requires welding on the inside only? Buly