X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail.qnsi.net ([66.219.56.248] verified) by logan.com (CommuniGate Pro SMTP 5.2.13) with ESMTP id 3596868 for flyrotary@lancaironline.net; Sat, 25 Apr 2009 23:00:09 -0400 Received-SPF: none receiver=logan.com; client-ip=66.219.56.248; envelope-from=bhughes@qnsi.net Return-Receipt-To: "Bobby J. Hughes" MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Subject: RE: [FlyRotary] Re: Exhaust system wall thickness Disposition-Notification-To: "Bobby J. Hughes" Content-class: urn:content-classes:message X-MimeOLE: Produced By Microsoft Exchange V6.5 Date: Sat, 25 Apr 2009 22:00:14 -0600 Message-ID: <74120FDE88CAFE4DBDA8814BCE20A3F30D856C@qnsi-mail.qnsi.net> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] Re: Exhaust system wall thickness Thread-Index: AcnF/jXw6gUjfHIPTlapOIW0+Sha8wAI4ZSg References: From: "Bobby J. Hughes" To: "Rotary motors in aircraft" Chris M. I would also like to see how you modified yours. I cut the end off just about flush with the front of the engine. I then expanded a 90 degree 321 SS tube to slip fit between the inner floating tube and outer shell and had it welded. Have you been able to identify the inner tube material? Magnetism seemed weaker than my 321 tube. Bobby =20 -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of The Mallorys Sent: Saturday, April 25, 2009 4:31 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Exhaust system wall thickness Chris, That is the approach I took for my Renesis. I spent the time to cut away the outer shell from the stock manifold, leaving only the inside pieces. Then I welded the two pieces together. None of my pictures show it very well, so I'll have to take a new one if you need it. Chris Mallory -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Bobby J. Hughes Sent: Saturday, April 25, 2009 3:00 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Exhaust system wall thickness Chris, If I remember correctly you have a Renesis. If so, the stock manifold can easily be cut down and used. It's a little heavy but you don't have to worry about it holding up. I may try a lighter manifold in the future. But for now it's one less thing to worry about during the first 100 hrs. The stock manifold can be had for under $100 but may take some looking. It also has a good heat shield that can be partly used. At least three folks on this list have taken this approach.=20 Here's one on Ebay with no reserve and no bids. =20 http://cgi.ebay.com/ebaymotors/RX8-Exhaust-Manifold-and-O2-sensor-No-Res erve_W0QQitemZ230338894473QQcmdZViewItemQQimsxZ20090423?IMSfp=3DTL0904231= 4 10006r30271 Bobby Hughes =20 -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Christopher Owens Sent: Saturday, April 25, 2009 12:32 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Exhaust system wall thickness Hi Al, I agree, but don't have much experience with these kinds of metal and how much they weigh. I suspected that if I asked about the high side, someone would reply that I didn't need that much and make a good recommendation. I do greatly appreciate the insight :-) Best regards, Chris On Apr 25, 2009, at 12:49 AM, Al Gietzen wrote: > with, and I found some notes about using SS handrail tubing,=20 > approximately 0.12" in wall thickness. If one were to build matching=20 > muffler components to attach to those tubes, would 0.12" be sufficient > thickness (presuming 304SS or similar)? Thicker? Thinner? > > Chris; > > You're building an airplane. Weight matters. .035 inconel is good. > > Al G > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: http://mail.lancaironline.net:81/lists/=20 > flyrotary/List.html -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html