X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imr-ma01.mx.aol.com ([64.12.206.39] verified) by logan.com (CommuniGate Pro SMTP 5.3.5) with ESMTP id 4230997 for flyrotary@lancaironline.net; Thu, 22 Apr 2010 15:41:09 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.206.39; envelope-from=WRJJRS@aol.com Received: from imo-da02.mx.aol.com (imo-da02.mx.aol.com [205.188.169.200]) by imr-ma01.mx.aol.com (8.14.1/8.14.1) with ESMTP id o3MJePCD027870 for ; Thu, 22 Apr 2010 15:40:25 -0400 Received: from WRJJRS@aol.com by imo-da02.mx.aol.com (mail_out_v42.9.) id q.d89.57523cb (37225) for ; Thu, 22 Apr 2010 15:40:24 -0400 (EDT) Received: from magic-m25.mail.aol.com (magic-m25.mail.aol.com [172.20.22.198]) by cia-ma06.mx.aol.com (v128.3) with ESMTP id MAILCIAMA064-91694bd0a627212; Thu, 22 Apr 2010 15:40:23 -0400 From: WRJJRS@aol.com Message-ID: <6af38.2fad91f5.39020027@aol.com> Date: Thu, 22 Apr 2010 15:40:23 EDT Subject: Re: [FlyRotary] Re: Lightweight rotary parts and engine mounts (was Cooling f... To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="part1_6af38.2fad91f5.39020027_boundary" X-Mailer: 9.0 SE for Windows sub 5046 X-AOL-ORIG-IP: 75.210.86.41 X-AOL-IP: 172.20.22.198 X-Spam-Flag:NO X-AOL-SENDER: WRJJRS@aol.com --part1_6af38.2fad91f5.39020027_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 4/22/2010 10:35:16 AM Pacific Daylight Time, Bktrub@aol.com writes: Maybe having provisions for mounting on the front cover of the engine would avoid conflicts with the exhaust system, and would lessen the amount of mounting tubes/weight needed. I hate to sound like I'm pontificating here, but with all this talk of aluminum side and middle housings with a nitrided wear surface, has anyone thought about the minimum thickness of a steel wear plate to avoid warping due to heating? The reason I ask is that I was thinking that in order to have aluminum side housings, a sandwich of wear plates with the rest of the side plate made from aluminum might work without brazing the steel to the aluminum, if brazing is even possible. Instead of brazing, O-rings like the water jacket o-rings might be incorporated. Just a thought. My RV-4 is 1090 lbs, heavier than I'd like. That's about 230 lbs heavier than the Hatch/Beckham Powersport RV-4 at around 865 lbs, if I recall correctly. Brian trubee Brian, The steel plates (lightened) are actually lighter than the sandwich steel and aluminum plates PSport actually tried it. Bill Jepson --part1_6af38.2fad91f5.39020027_boundary Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
In a message dated 4/22/2010 10:35:16 AM Pacific Daylight Time,=20 Bktrub@aol.com writes:
Maybe having provisions for mounting on the front cover of the engi= ne=20 would avoid conflicts with the exhaust system, and would lessen the amou= nt of=20 mounting tubes/weight needed.
 
I hate to sound like I'm pontificating here, but with all this talk= of=20 aluminum side and middle housings with a  nitrided wear surface, ha= s=20 anyone thought about the minimum thickness of a steel wear plate to avoi= d=20 warping due to heating? The reason I ask is that I was thinking that in= order=20 to have aluminum side housings, a sandwich of wear plates with the rest= of the=20 side plate made from aluminum might work without brazing the steel to th= e=20 aluminum, if brazing is even possible. Instead of brazing, O-rings like= the=20 water jacket o-rings might be incorporated.  Just a thought.
 
My RV-4 is 1090 lbs, heavier than I'd like. That's about 230 lbs he= avier=20 than the Hatch/Beckham Powersport RV-4 at around 865 lbs, if I recall=20 correctly.
 
Brian trubee
Brian,
The steel plates (lightened) are actually lighter than the sandwich= steel=20 and aluminum plates PSport actually tried it.
Bill Jepson
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