X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from smtp102.sbc.mail.gq1.yahoo.com ([67.195.15.61] verified) by logan.com (CommuniGate Pro SMTP 5.3c2) with SMTP id 3975512 for flyrotary@lancaironline.net; Fri, 13 Nov 2009 18:38:26 -0500 Received-SPF: none receiver=logan.com; client-ip=67.195.15.61; envelope-from=JLuckey@pacbell.net Received: (qmail 64000 invoked from network); 13 Nov 2009 23:37:51 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=pacbell.net; h=Received:X-Yahoo-SMTP:X-YMail-OSG:X-Yahoo-Newman-Property:From:To:Subject:Date:Message-ID:MIME-Version:Content-Type:X-Mailer:In-Reply-To:thread-index:X-MimeOLE; b=TZ9O/dQ/er74f168KDalxIjd+Zo8CxX8xy+LVvfb9GpMd6mSqsUMdAfoXAnM9qLxyeFSkio6hpCxXtlQe2DDbGck1udGZ8Nyqv+L6vjhe+eJPhkF6kiiADM+J5ElZIyfohQlVlpG4CCQjJW606z/K38g0XLMI/zUp+lnInAhUEc= ; Received: from adsl-99-129-214-76.dsl.lsan03.sbcglobal.net (JLuckey@99.129.214.76 with login) by smtp102.sbc.mail.gq1.yahoo.com with SMTP; 13 Nov 2009 15:37:50 -0800 PST X-Yahoo-SMTP: Rlj_3EGswBCwtPCKshxPrOwNc_mKhod146WmwQ8HoqE- X-YMail-OSG: iZeqmqMVM1lqLhwP.luoN1QDXm1Fl4iugzhJody0_NCZgyIvxW9UEB1y2ceObDQf2yNaAp9r1KPjadKVA2xnL3rk7GivBaoTp3_Ob4ZCkWGG1jhK0W3ntOL993P9IfhHMwrurE6la7dA4HbIcobWPLS2ce0isg.1z66L_vYg9ItuqvkjYdHWtQ0sn_l7zDka4t_zmZR.jZhLBZnxicnl88CF07z3KCVuGA7O8fEA8TuwcY5CEt9GSLPaYkGiTZ2XrZkcopH8jVggWTQxdvIZ.Q8u5TVs8rniePeiLHcNMpGiRVyVkP47ghxVKUka87BPZyLBTJOx2HzVdSoSm1dQx3fzbbx0Zi7tUXtqucsIgRMsDKiCtsUMmoiAiD5MqXWnKNCNzhQw0.9H2GqIQ8LvFdMQeF_T2VedJTFirvGIGKG4qc.Ou1zAG0p0xwoBYD9Bq73A5Rp2cQ1JyQ-- X-Yahoo-Newman-Property: ymail-3 From: "Jeff Luckey" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] renesis stock exhaust flange Date: Fri, 13 Nov 2009 15:37:45 -0800 Message-ID: <007801ca64ba$4d729510$6701a8c0@dcshq1> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0079_01CA6477.3F4F5510" X-Mailer: Microsoft Office Outlook 11 In-Reply-To: thread-index: Acpkl9f8Tx5+z+CzQbeOp6qnYc/kTAAIh2IQ X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_0079_01CA6477.3F4F5510 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit I thought that the recommended material for rotary engine exhaust parts was 321 stainless. Is 304 OK to use? I thought the temp rating for 321 was higher (like 1500F)? Please correct me if I have incorrect info. _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of kevin lane Sent: Friday, November 13, 2009 11:31 To: Rotary motors in aircraft Subject: [FlyRotary] renesis stock exhaust flange I didn't come across this fact in the archives and thought I'd pass it on. the stock exhaust flanges appear to be made from powdered metal. when you attempt to weld to them the base metal breaks off very easily. I was going to modify the stock exhaust, then was talked into a new header, using the original flanges. it's only money. better to break on the workbench, no? I ordered a new 304 flange from ed klepis today. BTW, Columbia River Mandrel Bending supplies Burns with parts and costs 1/3 to 1/2 the price, plus sells schedule 10 tubing & elbows [.090 wall] as well. they have been good to deal with. http://www.mandrel-bends.com/catalog/contact-us.html kevin interesting to watch mandrel bending. they pull this "chain" of brass doughnuts thru the tube while bending it. ------=_NextPart_000_0079_01CA6477.3F4F5510 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

I thought that the recommended = material for rotary engine exhaust parts was 321 stainless. Is 304 OK to = use? I thought the temp rating for 321 was higher (like = 1500F)?

Please correct me if I have = incorrect info.

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of kevin lane
Sent: Friday, November = 13, 2009 11:31
To: Rotary motors in aircraft
Subject: [FlyRotary] = renesis stock exhaust flange

I didn't come across this fact in = the archives and thought I'd pass it on. the stock exhaust flanges = appear to be made from powdered metal. when you attempt to weld to them the = base metal breaks off very easily. I was going to modify the stock = exhaust, then was talked into a new header, using the original flanges. = it's only money. better to break on the workbench, no? I ordered a new = 304 flange from ed klepis today. BTW, Columbia River Mandrel Bending = supplies Burns with parts and costs 1/3 to 1/2 the price, plus sells schedule 10 = tubing & elbows [.090 wall] as well. they have been good to deal with. http://www.= mandrel-bends.com/catalog/contact-us.html kevin

interesting to watch mandrel = bending. they pull this "chain" of brass doughnuts thru the tube while = bending it.

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