Return-Path: Received: from smtpauth07.mail.atl.earthlink.net ([209.86.89.67] verified) by logan.com (CommuniGate Pro SMTP 4.3c3) with ESMTP id 857791 for flyrotary@lancaironline.net; Wed, 06 Apr 2005 20:56:04 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.86.89.67; envelope-from=jerryhey@earthlink.net Received: from [63.189.97.195] (helo=earthlink.net) by smtpauth07.mail.atl.earthlink.net with asmtp (Exim 4.34) id 1DJLIm-0002oq-GK for flyrotary@lancaironline.net; Wed, 06 Apr 2005 20:55:21 -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=i5IR3WRCl4DBloRJnteS7PtW/+Y9mP2SLDlC6JeK4kiJoRjoa7wVOkOd2MeMooHY; Date: Wed, 6 Apr 2005 19:56:47 -0500 Subject: Re: [FlyRotary] Re: P port runners 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: X-Mailer: Apple Mail (2.552) X-ELNK-Trace: 8104856d7830ec6b1aa676d7e74259b7b3291a7d08dfec79cba83e7a5b864244555763365cf9c4df350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 63.189.97.195 Ed, $75.00? I put more than than in the trash can a couple of days ago. After wasting about $100.00 worth of aluminum tubing I got the job done perfectly with $38.00 worth of steel tubing. That is what I wanted to do originally but was talked into the aluminum. I have nothing against aluminum but in this case it was not the right choice. My original drawings called for 1.75 o.d. 1.625 i.d. steel tubing but even I forgot that in the rush to make a super cool aluminum intake. If we could have found a 2.5R sweep in 6061 with the right I.d, it would have been possible. Or better technique on my part would have made it possible. However, now that I have figured out the steel, I can build a complete runner in about 45 minutes. The next p port I build will benefit greatly from this experience. For sure there will be ONE i.d./o.d. throughout. Jerry On Wednesday, April 6, 2005, at 07:34 PM, Ed Anderson wrote: > Jerry, looks like great progress. My two housings are panting with > anticipation. > > By the way, next time I recommend you try RBWagner. The produce stail > railing and have almost any radius from 1" to 8" in tubes from 1" to 2 > 1/2" > in stainless or aluminum. I got my exhaust tubing from them because > I > could select a number of different bends to get the configuration I > wanted. > > Only trouble is they have now raised their minimum order to $75. Stil > might > be worth it to get exactly what you want. > > Ed A > ----- Original Message ----- > From: "Jerry Hey" > To: "Rotary motors in aircraft" > Sent: Wednesday, April 06, 2005 5:39 PM > Subject: [FlyRotary] P port runners > > >> I made a little progress on the p port today and have the runners in >> place though not finished welded. These are 21" long from the rotor >> face. They are steel but the bell mouths are aluminum made by Ed >> Klepeis. Eventually the bellmouths will be epoxied to the runners but >> for todays photo session we went with hose and clamps. They were not >> easy to make but if I had to make more, now that I have learned how, >> it >> would not be a difficult process. >> >> Originally, the throttle bodies had a 2 inch o.d. where they were to >> butt up against the runners. The i.d. is 1.625. The sweep radius had >> to be 2.5 inches so that the runners would lay low across the top of >> the engine. A 3 inch R was way to high. The search for a sweep to >> fit >> the above proved fruitless. Ed K. did find a 1.9 o.d. aluminum sweep >> with a 1.61 i.d. which was close enough. However, this material was >> in >> a very soft condition and I could not clamp it securely enough to saw >> or part off, without distorting it beyond use. I am sure a real >> machinist could have figured out a way, but it whipped me. >> >> Finally I switched to a steel 1.75 o.d. x 1.625 i.d. x 2.5R which >> made an excellent runner except that it did not match the throttle >> body >> or the bell mouth. Collars had to be made to match the 1.75 to 2 >> inches at the throttle body and 1.75 to 1.9 at the bell mouth. These >> were welded to the runner and I was nearly in business. At least on >> the throttle body end I could use 2 inch i.d. hose and clamp it >> together. I hoped it would work on the bell mouth but the 1.9 o.d. >> was too small for the hose and I could not clamp securely. As I >> said, they will be epoxied eventually. >> >> The runners travel slightly downhill from the bell mouths. I did this >> to created clearance for the Bells over the engine. Here are a couple >> of photos. Next pics, hopefully, will be of the powder coated >> finished product which will include the plenum, fuel rail and dual air >> intakes (filtered or ram). 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 >