Return-Path: Sender: (Marvin Kaye) To: flyrotary Date: Mon, 12 May 2003 19:41:33 -0400 Message-ID: X-Original-Return-Path: Received: from server12.safepages.com ([216.127.146.26] verified) by logan.com (CommuniGate Pro SMTP 4.1b6) with ESMTP id 2345391 for flyrotary@lancaironline.net; Mon, 12 May 2003 19:11:07 -0400 Received: by server12.safepages.com (Postfix, from userid 1012) id 56DDD12DA05; Mon, 12 May 2003 23:10:21 +0000 (GMT) Received: from 2b0w201 (1Cust233.tnt1.pensacola2.fl.da.uu.net [67.248.205.233]) by server12.safepages.com (Postfix) with SMTP id 8631C11AF81 for ; Mon, 12 May 2003 23:10:19 +0000 (GMT) From: "Tommy James" X-Original-To: "Rotary motors in aircraft" Subject: RE: [FlyRotary] Re: 321 SS thickness X-Original-Date: Mon, 12 May 2003 18:11:35 -0500 X-Original-Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2911.0) Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2919.6600 Hi Mike and thanks for the concern. We do have a rigid header to "y" set up. The Y collector is then joined to flex tubing, and then to the muffler. Have not read the 'other' list in many moons, and have never thought that I might have a future problem in the area. I'll put this on my growing list of checks. Tommy<>< === Tommy, I think you are saying that you have welded your 2 exhaust primaries into a "Y" collector? Just want to be sure that you have slip couplings, flex tubing, or some other means of allowing the 2 primaries to move relative to one another. As opposed to a header that is rigidly welded together from exhaust flange to collector. There was a recent crash discussed on the "other" list that was caused by a failed exhaust system. The failure was due (at least in part) to the builder not allowing for differential expansion of the 2 primaries. Mike Wills