X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from hrndva-omtalb.mail.rr.com ([71.74.56.124] verified) by logan.com (CommuniGate Pro SMTP 5.2.11) with ESMTP id 3441325 for flyrotary@lancaironline.net; Fri, 23 Jan 2009 21:58:58 -0500 Received-SPF: pass receiver=logan.com; client-ip=71.74.56.124; envelope-from=rdarrah@austin.rr.com Received: from Betty ([70.114.160.244]) by hrndva-omta06.mail.rr.com with SMTP id <20090124025821.RYEH11982.hrndva-omta06.mail.rr.com@Betty> for ; Sat, 24 Jan 2009 02:58:21 +0000 Message-ID: <6DBE7C1997D7486C98BF4E91650FA01D@Betty> From: "Bob Darrah" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: HP was : Mark's BBQ Run / 20B numbers Date: Fri, 23 Jan 2009 20:58:20 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0081_01C97D9D.52C01FB0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5512 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 This is a multi-part message in MIME format. ------=_NextPart_000_0081_01C97D9D.52C01FB0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hay, Ed, I always thought 15 Psi boost was about only 30" Hg of boost-atmos= pheric pressure (about 15 Psi) equals only (about ) 30" Hg. Where did I go = wrong? ----- Original Message -----=20 From: Ed Anderson=20 To: Rotary motors in aircraft=20 Sent: Friday, January 23, 2009 2:10 PM Subject: [FlyRotary] Re: HP was : Mark's BBQ Run / 20B numbers Should be a fire belching dragon of an engine at over 15psi, Greg.=20 =20 15 Psi boost would be roughly 60" Hg of boost which at an A/F ratio of 1= 2 (assume you would run it a bit rich at those boost levels) would give at = 6000 rpm approx 550 HP burning 51 gph (more power at high rpm and boost na= turally) and producing a total of 25000 BTU/Min of heat to be dumped thro= ugh the radiator and oil cooler. Boy, you will produce more heat energy th= at gets dumped through your oil cooler (8484 BTU/Min) than my total (coolan= t and oil heat) entire engine puts out. Hope you have big radiators and oi= l cooler {:>). ------=_NextPart_000_0081_01C97D9D.52C01FB0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable