X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ms-smtp-03.southeast.rr.com ([24.25.9.102] verified) by logan.com (CommuniGate Pro SMTP 5.0.9) with ESMTP id 1090014 for flyrotary@lancaironline.net; Wed, 03 May 2006 08:16:31 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.102; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-025-165.carolina.res.rr.com [24.74.25.165]) by ms-smtp-03.southeast.rr.com (8.13.6/8.13.6) with SMTP id k43CFjCX015029 for ; Wed, 3 May 2006 08:15:47 -0400 (EDT) Message-ID: <001c01c66eab$51a3cc70$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: new hangar Date: Wed, 3 May 2006 08:15:51 -0400 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2869 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2869 X-Virus-Scanned: Symantec AntiVirus Scan Engine I like the idea, George. I think that is the "secret" is to keep the shock wave from having a clean shot out the muffler but yet not restrict gas flow - thanks for the suggestions. Ed ----- Original Message ----- From: "george lendich" To: "Rotary motors in aircraft" Sent: Wednesday, May 03, 2006 2:54 AM Subject: [FlyRotary] Re: new hangar > Ed, > I understood what you ment! > > I personally feel that the second of each pair of cones may cause too > much > restriction through turbulence. I understand what your saying about > possibly > making the second one bigger with holes - I unsure how that would work - > seems a bit restrictive to me. > > If you join the two open ends of the cones it would make for a smoother > transition, but still allow for the expansion area you are wanting, > between > each joined pair. > > Also no raw edges for the exhaust to chew away at. > > Bill's and mine only have one of these (pair) of cones in the muffler - > it's > job is to redirect the shock wave from directly seeing the exhaust exit. > > George (down under) > >> George, here was my idea of a muffler using cones. The centre (smaller) >> tube is perforated with the cone attached to it. Room at the widest part > of >> the cone and wall of outer tube for gas to pass. A variation was to have >> the cone extend to the outer tube wall and have all cones facing the > header >> end of the muffler only permitting gas (and sound) through the perforated >> centre tube. >> >> Ed >> ----- Original Message ----- >> From: "george lendich" >> To: "Rotary motors in aircraft" >> Sent: Tuesday, May 02, 2006 7:42 PM >> Subject: [FlyRotary] Re: new hangar >> >> >> > Ed, >> > My sentiments exactly - they will soon look a bit worse for wear. >> > I can obviously source them from here but you will be better served if > you >> > can source them locally - some of ours may in fact come from the US. >> > >> > If you give me a size I will get you a price, what I find the most >> > expensive >> > is the cost of postage to the USA. >> > Bob may also have the answer! If he has a contact perhaps you could get >> > them >> > made out of 321SS >> > George >> > >> >> How about a source for the more reasonable priced cones, George. I >> >> obviously don't care about the finish since they will go inside - just >> >> the >> >> material and cost. Thanks >> >> >> >> Ed >> >> ----- Original Message ----- >> >> From: "george lendich" >> >> To: "Rotary motors in aircraft" >> >> Sent: Tuesday, May 02, 2006 12:11 AM >> >> Subject: [FlyRotary] Re: new hangar >> >> >> >> >> >> > Ed, >> >> > That's way too dear, you should be able to get them for about $10 US >> >> > ea. >> > I >> >> > must admit I had to shop around as well. The ones I ended up with >> > weren't >> >> > as >> >> > perfectly finished as the expensive one but the same material 316SS. >> >> > Our design has an inner cooling tube and an outer cooling tube and > heat >> >> > shield, all the ends are cones as well! >> >> > All I have to do is get my welder to finish it. >> >> > George >> >> > >> >> > George ( down under) >> >> > >> >> >> Sounds like the right formula, George - will wait for your >> >> >> project's >> >> > outcome >> >> >> before I try cones. Yes, I did find some cone inserts at $60.00 > USD >> >> > each. >> >> >> I would need 4 for my two tubes - hummm makes one tube sound better >> >> >> all >> >> > the >> >> >> time. >> >> >> >> >> >> Ed >> >> >> >> >> >> ----- Original Message ----- >> >> >> From: "george lendich" >> >> >> To: "Rotary motors in aircraft" >> >> >> Sent: Monday, May 01, 2006 7:48 PM >> >> >> Subject: [FlyRotary] Re: new hangar >> >> >> >> >> >> >> >> >> > >> >> >> >> Just the shells, TJ, the 1/8" thick SS washers are history. I > have >> >> >> >> concluded that no reasonable thickness of metal will stand up to >> >> >> >> the >> >> >> > exhaust >> >> >> >> pulse for long if it is perpendicular to the shock wave. I > believe >> >> > that >> >> >> > if >> >> >> >> I could shape them into cones where by the shock wave would hit > the >> >> > side >> >> >> > of >> >> >> >> the cone at an oblique angle would probably survive - now all >> >> >> >> I >> > have >> >> > to >> >> >> > do >> >> >> >> is find some {:>). >> >> >> >> >> >> >> >> Ed >> >> >> > >> >> >> > Ed, >> >> >> > There plenty of SS cones available in 1.6mm, I'm using them in my >> >> > exhaust >> >> >> > which is a joint venture design with Bill Jepson - the idea is to >> >> > redirect >> >> >> > the shock waves but not restrict the exhaust, as you have alluded >> >> >> > to. >> >> >> > George ( down under) >> >> >> > >> >> >> > >> >> >> > -- >> >> >> > Homepage: http://www.flyrotary.com/ >> >> >> > Archive and UnSub: > http://mail.lancaironline.net/lists/flyrotary/ >> >> >> > >> >> >> >> >> >> >> >> >> >> >> >> -- >> >> >> Homepage: http://www.flyrotary.com/ >> >> >> Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/ >> >> > >> >> > >> >> > -- >> >> > Homepage: http://www.flyrotary.com/ >> >> > Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/ >> >> > >> >> >> >> >> >> >> >> -- >> >> Homepage: http://www.flyrotary.com/ >> >> Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/ >> > >> > >> > -- >> > Homepage: http://www.flyrotary.com/ >> > Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/ >> > >> > > > ---------------------------------------------------------------------------- > ---- > > >> -- >> Homepage: http://www.flyrotary.com/ >> Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/ >> > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/ >