X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.123] verified) by logan.com (CommuniGate Pro SMTP 5.2.3) with ESMTP id 2956296 for flyrotary@lancaironline.net; Fri, 06 Jun 2008 10:09:02 -0400 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.123; envelope-from=eanderson@carolina.rr.com Received: from edward2 ([75.191.186.236]) by cdptpa-omta05.mail.rr.com with SMTP id <20080606140822.HFW8238.cdptpa-omta05.mail.rr.com@edward2> for ; Fri, 6 Jun 2008 14:08:22 +0000 Message-ID: <000c01c8c7de$8188ea40$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Titanium rotary? [FlyRotary] Re: Big engines Date: Fri, 6 Jun 2008 10:06:24 -0400 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=response Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 Always interesting to hear of excursions from the stock 2 rotor format. Does anyone recall the gent who was going to make a rotary engine out of titanium? As best I recall I believe he actually had a rotor tact welded reportedly out of titanium plate - there were some photos. I doubted at the time that anything would come of it, but it was interesting to see what some folks are willing to tackle. Ed ----- Original Message ----- From: "Ernest Christley" To: "Rotary motors in aircraft" Sent: Friday, June 06, 2008 9:59 AM Subject: [FlyRotary] Re: Big engines > Lynn Hanover wrote: >> In this case you could machine away one face or both faces and braze two >> rotors together. One end with the gear and the other without. You could >> have >> twice the bearing length, and nearly twice the displacement. >> >> Just the crank, rotors and housings would be special. Everything else >> could >> be stock pieces. Maybe double the torque, could be direct drive? >> > Those voices keep talking to me. > > Could you use two rotor housings, brazed then pinned on the compression > side? Then they wouldn't really need to be special either, and you'd get > FOUR plugs per cylinder. > > Side seals would be standard, but would the apex seals have to be special > made...or could you use two of those side-by-side? > > You would have to have either a monster bridge port or a peripheral port > to feed the monster. > > Renesis rotor housings probably wouldn't work. The side exhaust would be > to restrictive for twice the volume. > > You'd need to build a new oil pan, or use a remote sump. Simple. Special > made compression bolts are also a cinch. > > On a guess, you'd be adding about 15lbs per rotor (?). It could possibly > end up being a 400Hp engine with an installed weight under 350lbs(?). > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html