X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.123] verified) by logan.com (CommuniGate Pro SMTP 5.3c2) with ESMTP id 3975538 for flyrotary@lancaironline.net; Fri, 13 Nov 2009 19:32:45 -0500 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.123; envelope-from=eanderson@carolina.rr.com Received: from computername ([75.191.186.236]) by cdptpa-omta04.mail.rr.com with ESMTP id <20091114003211586.BHPG5263@cdptpa-omta04.mail.rr.com> for ; Sat, 14 Nov 2009 00:32:11 +0000 From: "Ed Anderson" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: renesis stock exhaust flange Date: Fri, 13 Nov 2009 19:32:55 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0006_01CA6498.19BFB080" X-Mailer: Microsoft Office Outlook, Build 11.0.5510 Thread-Index: AcpkumhMTL+1nHWnQB6XimCrOAIVQAABywfw In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 Message-Id: <20091114003211586.BHPG5263@cdptpa-omta04.mail.rr.com> This is a multi-part message in MIME format. ------=_NextPart_000_0006_01CA6498.19BFB080 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Jeff, I use 304 SS for my exhaust headers and it has lasted for 10 + years and 500 hour, however, its actually schedule 20 (I think) SS Pipe used for stair railings -its wall thickness is 0.102 - so pretty thick which is probably why it has lasted so long. But, thicker of course means heavier - but, it was considerably cheaper. It will work, just depends on what your criteria is. Ed Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://www.andersonee.com http://www.dmack.net/mazda/index.html http://www.flyrotary.com/ http://members.cox.net/rogersda/rotary/configs.htm#N494BW http://www.rotaryaviation.com/Rotorhead%20Truth.htm _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Jeff Luckey Sent: Friday, November 13, 2009 6:38 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: renesis stock exhaust flange 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. __________ Information from ESET NOD32 Antivirus, version of virus signature database 3267 (20080714) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com ------=_NextPart_000_0006_01CA6498.19BFB080 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Jeff, I use 304 SS for my exhaust = headers and it has lasted for 10 + years and 500 hour, however, its actually = schedule 20 (I think) SS Pipe used for stair railings –its wall thickness is = 0.102 – so pretty thick which is probably why it has lasted so long.  But, = thicker of course means heavier – but, it was considerably cheaper.  = It will work, just depends on what your criteria = is.

 

Ed

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Jeff Luckey
Sent: Friday, November = 13, 2009 6:38 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = renesis stock exhaust flange

 

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.



__________ Information from ESET NOD32 Antivirus, version of virus = signature database 3267 (20080714) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com

------=_NextPart_000_0006_01CA6498.19BFB080--