X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao105.cox.net ([68.230.241.41] verified) by logan.com (CommuniGate Pro SMTP 5.2.12) with ESMTP id 3450030 for flyrotary@lancaironline.net; Sat, 24 Jan 2009 00:51:29 -0500 Received-SPF: none receiver=logan.com; client-ip=68.230.241.41; envelope-from=alventures@cox.net Received: from fed1rmimpo01.cox.net ([70.169.32.71]) by fed1rmmtao105.cox.net (InterMail vM.7.08.02.01 201-2186-121-102-20070209) with ESMTP id <20090124055052.VQRB8485.fed1rmmtao105.cox.net@fed1rmimpo01.cox.net> for ; Sat, 24 Jan 2009 00:50:52 -0500 Received: from BigAl ([72.192.137.74]) by fed1rmimpo01.cox.net with bizsmtp id 7Hqr1b00J1cVYgg03Hqs2Y; Sat, 24 Jan 2009 00:50:52 -0500 X-Authority-Analysis: v=1.0 c=1 a=bmOEHF-bHKAA:10 a=Gbi73N1xsNQA:10 a=8nXGVNtUklOSNXaW7YgA:9 a=Kp3BrYkYBi-91H5zLJ9_DqMYUH0A:4 a=EzXvWhQp4_cA:10 a=CWfAmLVWKswA:10 a=LRLYrf9nAAAA:8 a=OgIzLCGm45HyCpKv35YA:9 a=sL4GzhUM7uw8VWWEFDMA:7 a=gBf3UdHV6O9xZx3SeW35J-1KUcYA:4 a=AfD3MYMu9mQA:10 X-CM-Score: 0.00 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: HP was : Mark's BBQ Run / 20B numbers Date: Fri, 23 Jan 2009 21:52:54 -0800 Message-ID: <53B9F77BA72C4C2190267891AC8805BC@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0012_01C97DA4.F23C0CA0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 In-Reply-To: Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_0012_01C97DA4.F23C0CA0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable I'm sure he meant 60" MAP; 30" boost. =20 Al =20 =20 Hay, Ed, I always thought 15 Psi boost was about only 30" Hg of boost-atmospheric 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 =20 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 = 12 (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 naturally) and producing a total of 25000 BTU/Min of heat to be dumped through the radiator and oil cooler. Boy, you will produce more heat = energy that gets dumped through your oil cooler (8484 BTU/Min) than my total (coolant and oil heat) entire engine puts out. Hope you have big = radiators and oil cooler {:>). ------=_NextPart_000_0012_01C97DA4.F23C0CA0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

I’m sure he meant 60” MAP; 30” boost.

 

Al

 

 

Hay, Ed, I always thought = 15 Psi boost was about only 30" Hg of boost-atmospheric pressure (about 15 = Psi) equals only (about ) 30" Hg. Where did I go = wrong?

=

----- Original Message = -----

From: Ed Anderson

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.

 

 15 Psi = boost would be roughly 60” Hg of boost which at an A/F ratio of 12 (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 naturally) =  and producing a total of  25000 BTU/Min of heat to be dumped through = the radiator and oil cooler.  Boy, you will produce more heat energy = that gets dumped through your oil cooler (8484 BTU/Min) than my total (coolant and = oil heat) entire engine puts out.  Hope you have big radiators and oil = cooler {:>).

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