X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from rwcrmhc12.comcast.net ([216.148.227.152] verified) by logan.com (CommuniGate Pro SMTP 5.0.8) with ESMTP id 983750 for flyrotary@lancaironline.net; Mon, 13 Feb 2006 18:54:14 -0500 Received-SPF: none receiver=logan.com; client-ip=216.148.227.152; envelope-from=rlwhite@comcast.net Received: from Quail (c-68-35-160-229.hsd1.nm.comcast.net[68.35.160.229]) by comcast.net (rwcrmhc12) with SMTP id <20060213235329m1200aahsme>; Mon, 13 Feb 2006 23:53:29 +0000 Date: Mon, 13 Feb 2006 16:53:58 -0700 From: Bob White To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: Diesel Operation Message-Id: <20060213165358.63371c60.rlwhite@comcast.net> In-Reply-To: References: X-Mailer: Sylpheed version 2.2.0 (GTK+ 2.8.3; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Mon, 13 Feb 2006 18:34:37 -0500 Ernest Christley wrote: > Bob White wrote: > > >Hi Ernest, > > > >I have high compression rotors (9.7:1) so maybe all I need is the turbo > >and propane. ;-) Long ago I was thinking about adding a supercharger > >after I got the NA setup working (normalization only). After the > >length of time this has taken, I don't think it will ever happen. > > > >Bob W. (leaky tank sealed - leak check tomorrow) > > > > > > > Working from a fading memory here, but I believe diesels run closer to 27:1. > Ford tried to convert a gas engine to diesel operation in the '80s by > just driving up the compression. By all accounts, it sucked. It ran, > just not for long. The high compression basically rip apart the lighter > gas engine parts. > I don't think the rotary would suffer those issues, and it might even > solve the problem of fuel not burning in the chamber corners, but I'm > probably wrong. > I don't think the rotary can be made to run in diesel mode. Compression ratios just can't get into that range. Mistral is using diesel fuel with spark ignition. Bob W. -- http://www.bob-white.com N93BD - Rotary Powered BD-4 (first engine start 1/7/06) Custom Cables for your rotary installation - http://www.roblinphoto.com/shop/