X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from poplet2.per.eftel.com ([203.24.100.45] verified) by logan.com (CommuniGate Pro SMTP 5.3c2) with ESMTP id 3975517 for flyrotary@lancaironline.net; Fri, 13 Nov 2009 19:01:49 -0500 Received-SPF: none receiver=logan.com; client-ip=203.24.100.45; envelope-from=lendich@aanet.com.au Received: from sv1-1.aanet.com.au (sv1-1.per.aanet.com.au [203.24.100.68]) by poplet2.per.eftel.com (Postfix) with ESMTP id B873D1737C6 for ; Sat, 14 Nov 2009 08:01:13 +0800 (WST) Received: from ownerf1fc517b8 (203.171.92.134.static.rev.aanet.com.au [203.171.92.134]) by sv1-1.aanet.com.au (Postfix) with SMTP id 6CC87BEC00A for ; Sat, 14 Nov 2009 08:01:12 +0800 (WST) Message-ID: <222A39D0939849D7A263FCA8E000AEC7@ownerf1fc517b8> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: renesis stock exhaust flange Date: Sat, 14 Nov 2009 10:01:13 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0014_01CA6511.66533920" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5843 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 X-Antivirus: avast! (VPS 091113-1, 11/13/2009), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0014_01CA6511.66533920 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Jeff/ Mike, Yep 321 is the best. A neighbour worked at an airport exhaust shop, they = used 321SS exclusively, however they made their own bends out of flat - = I guess there's a trick to it. When I enquired about a price, their base = price is $1,000.00 - a bit expensive I thought. So I decided that I = could go up a bit in thickness and go to what ever bends were available = i.e. 316, 304. I guess it's down to the individual -Ed's had no problem with the = thicker ( other) SS =20 I know which way I'm going - the cost effective way. George ( down under) 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)? =20 Please correct me if I have incorrect info. =20 =20 -------------------------------------------------------------------------= ----- 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 =20 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 =20 interesting to watch mandrel bending. they pull this "chain" of brass = doughnuts thru the tube while bending it. ------=_NextPart_000_0014_01CA6511.66533920 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Jeff/ Mike,

Yep 321 is the best. A neighbour = worked at an=20 airport exhaust shop, they used 321SS exclusively, however they = made their=20 own bends out of flat - I guess there's a trick to it. When I enquired = about a=20 price, their base price is $1,000.00 - a bit expensive I thought. So I = decided=20 that I could go up a bit in thickness and go to what ever bends were = available=20 i.e. 316, 304.

I guess it's down to the individual = -Ed's had no=20 problem with the thicker ( other) SS

I know which way I'm going - the cost = effective=20 way.

George ( down under)

I thought = that the=20 recommended material for rotary engine exhaust parts was 321 = stainless. =20 Is 304 OK to use? I thought the temp rating for 321 was higher = (like=20 1500F)?

Please = correct me if=20 I have incorrect info.

From:=20 Rotary motors in aircraft = [mailto:flyrotary@lancaironline.net] On=20 Behalf Of kevin lane
Sent: Friday, November 13, 2009 = 11:31
To: = Rotary motors in aircraft
Subject: [FlyRotary] renesis = stock=20 exhaust flange

I didn't come = across=20 this fact in the archives and thought I'd pass it on. the stock = exhaust=20 flanges appear to be made from powdered metal. when you attempt = to weld=20 to them the base metal breaks off very easily. I was going to = modify the=20 stock exhaust, then was talked into a new header, using the original=20 flanges. it's only money. better to break on the = workbench,=20 no? I ordered a new 304 flange from ed klepis today. BTW, = Columbia=20 River Mandrel Bending supplies Burns with parts and costs 1/3 to 1/2 = the=20 price, plus sells schedule 10 tubing & elbows [.090 wall] as=20 well. they have been good to deal with. http://www.= mandrel-bends.com/catalog/contact-us.html =20 kevin

interesting to = watch=20 mandrel bending. they pull this "chain" of brass doughnuts thru = the tube=20 while bending=20 it.

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