X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.120] verified) by logan.com (CommuniGate Pro SMTP 5.2.12) with ESMTP id 3450414 for flyrotary@lancaironline.net; Sat, 24 Jan 2009 10:23:45 -0500 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.120; envelope-from=eanderson@carolina.rr.com Received: from computername ([75.191.186.236]) by cdptpa-omta04.mail.rr.com with ESMTP id <20090124152306.VQVQ2046.cdptpa-omta04.mail.rr.com@computername> for ; Sat, 24 Jan 2009 15:23:06 +0000 From: "Ed Anderson" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: HP was : Mark's BBQ Run / 20B numbers Date: Sat, 24 Jan 2009 10:23:11 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_002A_01C97E0D.C24583A0" X-Mailer: Microsoft Office Outlook, Build 11.0.5510 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 In-Reply-To: Thread-Index: Acl95873bpNKLJ0xRpCz5zRq1LgttgATuQ/A Message-Id: <20090124152306.VQVQ2046.cdptpa-omta04.mail.rr.com@computername> This is a multi-part message in MIME format. ------=_NextPart_000_002A_01C97E0D.C24583A0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Thanks, Al, for the clarification - yes. Absolute Manifold pressure = Ambient pressure + Boost Pressure. I see what led to the confusion, I referred to the absolute manifold pressure as total boost pressure when I was thinking total pressure of which boost pressure is only one component. Bob, I Must need more coffee in the morning - oops, that excuse won't work - as I sent that e mail in the afternoon {:>). Appreciate you catching my error. Ed Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://www.andersonee.com http://www.dmack.net/mazda/index.html http://www.flyrotary.com/ http://members.cox.net/rogersda/rotary/configs.htm#N494BW _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Al Gietzen Sent: Saturday, January 24, 2009 12:53 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: HP was : Mark's BBQ Run / 20B numbers 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 To: Rotary motors in aircraft 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 {:>). __________ Information from ESET NOD32 Antivirus, version of virus signature database 3267 (20080714) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com ------=_NextPart_000_002A_01C97E0D.C24583A0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Thanks, Al, for the clarification = – yes.  Absolute Manifold pressure =3D Ambient pressure + Boost = Pressure.  I see  what led to the confusion, I referred to the absolute = manifold pressure as   total boost pressure when I was thinking total = pressure of which boost pressure is only one = component.

 

Bob, I Must need more coffee in the morning – oops, that excuse won’t work - as I sent that e = mail in the afternoon {:>). 

 

Appreciate you catching my = error.

 

Ed

 

From: = Rotary motors in aircraft = [mailto:flyrotary@lancaironline.net] On Behalf Of Al = Gietzen
Sent: Saturday, January = 24, 2009 12:53 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = HP was : Mark's BBQ Run / 20B numbers

 

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 {:>).



__________ Information from ESET NOD32 Antivirus, version of virus = signature database 3267 (20080714) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com

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