X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from smtpauth05.mail.atl.earthlink.net ([209.86.89.65] verified) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTP id 921695 for flyrotary@lancaironline.net; Sun, 01 May 2005 19:36:50 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.86.89.65; envelope-from=jerryhey@earthlink.net Received: from [65.176.136.164] (helo=earthlink.net) by smtpauth05.mail.atl.earthlink.net with asmtp (Exim 4.34) id 1DSNym-0001BM-1A for flyrotary@lancaironline.net; Sun, 01 May 2005 19:36:04 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=simple; s=test1; d=earthlink.net; h=Date:Subject:Content-Type:Mime-Version:From:To:Content-Transfer-Encoding:In-Reply-To:Message-Id:X-Mailer; b=a8jSgxp2NA/Q2xi0cdv/0egFHsQ2eKDJ9T8qe/mdmnTnDymH2MPCmM9cr2wQG/9P; Date: Sun, 1 May 2005 18:37:46 -0500 Subject: Re: [FlyRotary] Re: P port plenum Content-Type: text/plain; delsp=yes; charset=US-ASCII; format=flowed Mime-Version: 1.0 (Apple Message framework v552) From: Jerry Hey To: "Rotary motors in aircraft" Content-Transfer-Encoding: 7bit In-Reply-To: Message-Id: <05432F5E-BA9A-11D9-9E7C-0003931B0C7A@earthlink.net> X-Mailer: Apple Mail (2.552) X-ELNK-Trace: 8104856d7830ec6b1aa676d7e74259b7b3291a7d08dfec796fd9e9904540e81592ad8d833b5e97bc350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 65.176.136.164 On Sunday, May 1, 2005, at 06:02 PM, david mccandless wrote: > > On 02/05/2005, at 6:53 AM, Ed Anderson wrote: > >> Looking Good, Jerry >> >> We're all following your state-of-the-art experiment and rooting for >> an exciting results. >> >> Ed >> >> ----- Original Message ----- From: "Jerry Hey" >> >> To: "Rotary motors in aircraft" >> Sent: Sunday, May 01, 2005 4:47 PM >> Subject: [FlyRotary] P port plenum >>> . Material is >>> mostly 16 gauge mild steel but the bell mouths are aluminum. It would >>> be easier to assemble if it were all one or the other. Jerry > > **** Hi Jerry, Why did you use a mix of materials? 6061al sheet is a > simple to use and welds easily. Dave McC Dave, you are right of course. The problem was finding aluminum runners of the right size, sweep radius and toughness. Since, on this first attempt, I intended to weld the runners to the plenum, I had to make the plenum out of steel as well. If I could have found satisfactory aluminum runners, I would have made the plenum out of aluminum and welded the bell mouths to the plenum and then either welded on the runners or connected them with hose and hose clamps. By the way, there is very little weight savings in using aluminum runners as the walls are quite thick. I found the aluminum sweeps that we did locate to be too soft to be of practical use. Steel runners of perfect o.d./i.d./sweep/ are readily available and much cheaper. This intake which has a smooth 1.625 inch bore is a hodgepodge of reducers/expanders to get the O.D.s to match up for clamping, welding etc. Jerry >>> >> >> >> ---------------------------------------------------------------------- >> ---------- >> >> >>> >>> >>> >>> >>> >> >> >> ---------------------------------------------------------------------- >> ---------- >> >> >>>>> Homepage: http://www.flyrotary.com/ >>>>> Archive: http://lancaironline.net/lists/flyrotary/List.html >> >> >> >>>> Homepage: http://www.flyrotary.com/ >>>> Archive: http://lancaironline.net/lists/flyrotary/List.html >> > > >>> Homepage: http://www.flyrotary.com/ >>> Archive: http://lancaironline.net/lists/flyrotary/List.html >