X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 80 [XXX] (49%) SPAM DICTIONARY WORDS: low count (33%) URL: contains host with port number (18%) SPAM TRICK: contains gapped text Return-Path: Received: from access.aic-fl.com ([207.30.253.2] verified) by logan.com (CommuniGate Pro SMTP 5.1.8) with ESMTP id 1995624 for flyrotary@lancaironline.net; Fri, 20 Apr 2007 08:49:01 -0400 Received-SPF: softfail receiver=logan.com; client-ip=207.30.253.2; envelope-from=unicorn@gdsys.net Received: from main (gdsi-42.gdsys.net [207.30.255.42]) by access.aic-fl.com (Rockliffe SMTPRA 4.5.6) with SMTP id for ; Fri, 20 Apr 2007 07:43:26 -0500 Message-ID: <000b01c78352$75ac6de0$2aff1ecf@main> From: "Richard Sohn" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Single Rotor Testing Date: Fri, 20 Apr 2007 08:47:33 -0500 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 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 ----- Original Message ----- From: "Ernest Christley" To: "Rotary motors in aircraft" Sent: Friday, April 20, 2007 7:05 AM Subject: [FlyRotary] Re: Single Rotor Testing > Richard Sohn wrote: > >> Tested my single rotor today. The first time with some real, >> reproduceable data. >> The configuration is with one compound side housing. The other side >> housing is still sandwiched, using milled down MAZDA housing section. >> This version weight for the nacked engine, flywheel and water pump >> included, is 90lb. This engine is based on 12A rotor and rotor housing. >> Intake is P-P. >> Data: >> RPM 4000 >> Fuel flow 2.5GPH >> MAP 21" >> EGT 1400F >> O2 .650 = 15 (ratio) >> At shut down: >> oil temp 200F >> Water temp 200F oil pressure was 50psi cold and hot, looks suspect. >> The water pressure gauge did not work, which was the reason for shutting >> down after 7min runtime. I had planed to go to max water temperature, did >> not want to do that without water pressure. >> The most interesting fact of this test is the possibility of a power >> estimate. Calculated power using a BSFC of .5 is 30 hp. Looking at the >> power curve of the LeMans engine, this is about 10% below of what is >> shown there. From this, I believe the projected over 100hp at 7500RPM is >> within reach. >> Richard Sohn >> N2071U > > You will be able to get 1HP/lb after you add a gearbox, right? > > > ,|"|"|, Ernest Christley | The gearbox is 23lb, so it will be a little less. However you would need all the other stuff under the cowling, which will make it a 179lb FF. This weight is comparable with a 912. Richard Sohn N2071U > ----===<{{(oQo)}}>===---- Dyke Delta Builder | > o| d |o http://ernest.isa-geek.org | > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.5.446 / Virus Database: 269.5.4/768 - Release Date: 4/19/2007 > 5:32 AM > >