Return-Path: Sender: (Marvin Kaye) To: lml@lancaironline.net Date: Wed, 22 Oct 2003 00:19:45 -0400 Message-ID: X-Original-Return-Path: Received: from omr-m11.mx.aol.com ([64.12.138.23] verified) by logan.com (CommuniGate Pro SMTP 4.1.5) with ESMTP id 2646045 for lml@lancaironline.net; Tue, 21 Oct 2003 21:11:43 -0400 Received: from Sky2high@aol.com by imo-m11.mx.aol.com (mail_out_v36_r1.1.) id q.aa.23d2aa85 (16781) for ; Tue, 21 Oct 2003 21:11:39 -0400 (EDT) From: Sky2high@aol.com X-Original-Message-ID: X-Original-Date: Tue, 21 Oct 2003 21:11:39 EDT Subject: Re: [LML] Re: Horsepower Calculation X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1066785099" X-Mailer: 9.0 for Windows sub 1100 -------------------------------1066785099 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 10/21/2003 7:17:28 PM Central Daylight Time, gwbraly@gami.com writes: What does Lycoming do that skews the Hp levels - - as compared, for example - - to TCM? George, If true, beats me.. If anyone has a better "formula" that can be used to approximate %power on the normally aspirated piston engines that most Lancairs use, please let me know - I have an inquiring mind. Besides, I need something simple for in flight comparison purposes. Especially since,as Lindbergh showed, power can be acheived more efficiently thru higher manifold pressure, low rpm than the other way around. Ok, Ok, that was with pre 1940 engines and non-computer designed and machined props. Scott Krueger Sky2high@aol.com II-P N92EX IO320 Aurora, IL (KARR) -------------------------------1066785099 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

In a message dated 10/21/2003 7:17:28 PM Central Daylight Time, gwbraly= @gami.com writes:

What does Lycoming do that skews the Hp levels - - as compared, for exampl= e - - to TCM?

George,

If true, beats me..

If anyone has a better "formula" that can be used to approximate %power= on the normally aspirated piston engines that most Lancairs use, pleas= e let me know - I have an inquiring mind. Besides, I need something si= mple for in flight comparison purposes. Especially since,as Lindbergh=20= showed, power can be acheived more efficiently thru higher manifold pre= ssure, low rpm than the other way around. Ok, Ok, that was with pre 1940 eng= ines and non-computer designed and machined props.

Scott Krueger
Sky2high@aol.com
II-P N92EX IO320 Aurora, IL (KARR)

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