X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 19 May 2005 16:08:07 -0400 Message-ID: X-Original-Return-Path: Received: from imo-d04.mx.aol.com ([205.188.157.36] verified) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTP id 949971 for lml@lancaironline.net; Thu, 19 May 2005 13:09:17 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.188.157.36; envelope-from=Sky2high@aol.com Received: from Sky2high@aol.com by imo-d04.mx.aol.com (mail_out_v38_r1.7.) id q.9d.60236c9f (3842) for ; Thu, 19 May 2005 13:08:29 -0400 (EDT) From: Sky2high@aol.com X-Original-Message-ID: <9d.60236c9f.2fbe220d@aol.com> X-Original-Date: Thu, 19 May 2005 13:08:29 EDT Subject: Re: [LML] Re: ECI "Titan" Cylinders X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1116522509" X-Mailer: 9.0 Security Edition for Windows sub 5000 -------------------------------1116522509 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 5/19/2005 11:59:29 A.M. Central Standard Time, cberland@systems3.net writes: Consider that cylinders that run 50d cooler - - can make more horsepower than the cylinders running 50d hotter. Better volumetric efficiency. George And the measure of that would be????????? Scott The measure is "manifold air temperature". If the manifold air temp is lowered 50 deg F, then the power would increase 5.8%. That is of course if the proper A/F is maintained. I believe there are to many variables to predict what a 50 deg cylinder temp drop would do to the manifold air temp. Craig, Thanks. Now I remember why I like to fly in the winter. Let's see, as we climb we lose power from reduced MAP faster than we gain in the lapse rate MAT. Saints preserve us if there is a temperature inversion. I guess I will just have to be satisfied with the ram air boost at air speeds approaching 200 Kts. Scott Krueger AKA Grayhawk Lancair N92EX IO320 SB 89/96 Aurora, IL (KARR) -------------------------------1116522509 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
In a message dated 5/19/2005 11:59:29 A.M. Central Standard Time,=20 cberland@systems3.net writes:
<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2> Consider that cylinders that run 50d cooler - - can make more=20 horsepower
than the cylinders running 50d hotter.  
Bet= ter=20 volumetric efficiency. George
 
And the measure of that would be?????????  Scott
 
The measure is "manifold air temperature".  If the manifold air=20= temp=20 is lowered 50 deg F, then the power would increase 5.8%.  That is of=20 course if the proper A/F is maintained.  I believe there are to many=20 variables to predict what a 50 deg cylinder temp drop would do to the mani= fold=20 air temp.
Craig,
 
Thanks.  Now I remember why I like to fly in the winter.  Let= 's=20 see, as we climb we lose power from reduced MAP faster than we gain in the l= apse=20 rate MAT.  Saints preserve us if there is a temperature inversion.
 
I guess I will just have to be satisfied with the ram air boost at air=20 speeds approaching 200 Kts.=20
 
Scott Krueger=20 AKA Grayhawk
Lancair N92EX IO320 SB 89/96
Aurora, IL=20 (KARR)



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