Return-Path: Sender: (Marvin Kaye) To: lml@lancaironline.net Date: Sun, 28 Mar 2004 09:43:10 -0500 Message-ID: X-Original-Return-Path: Received: from sccmmhc02.asp.att.net ([204.127.203.184] verified) by logan.com (CommuniGate Pro SMTP 4.2b1) with ESMTP id 3130761 for lml@lancaironline.net; Sun, 28 Mar 2004 06:39:21 -0500 Received: from new (12-217-88-233.client.mchsi.com[12.217.88.233]) by sccmmhc02.asp.att.net (sccmmhc02) with SMTP id <20040328113915mm2003lbepe>; Sun, 28 Mar 2004 11:39:15 +0000 X-Original-Message-ID: <003701c414b9$89bc70b0$f004fea9@new> From: "Cy Galley" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] relative temps? X-Original-Date: Sun, 28 Mar 2004 05:40:58 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0034_01C41487.3EE7DDE0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 This is a multi-part message in MIME format. ------=_NextPart_000_0034_01C41487.3EE7DDE0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable The point being that even the maximum temperature shown will change = relative to altitude and a bunch of the many the other parameters. It = changes and is not static, Further since they are self generators, they = are not really calibrated. A true system would take into account the = cold (meter) junction cabin temperature as well. ----- Original Message -----=20 From: Gary Rodgers=20 To: Lancair Mailing List=20 Sent: Saturday, March 27, 2004 10:40 PM Subject: [LML] relative temps? Cy < Since you are measuring the heat output, anything and every thing = that effects engine power will effect the temperature. Probe location, = cylinder cooling, ambient air temp, altitude, throttle setting, turbo = boost if you have it, engine condition, timing, spark plug condition, = air humidity, mag condition, impulse spring condition, exhaust system = condition, gasoline. airfilter condition, and I'll bet there are some I = have missed. Between cylinders the probe location, valve condition, = baffling(cooling), and injectors can and do change the indicated temps = for each cylinder.> Guess I'm confused about your 'relative' reference as well. All the = conditions you describe affect the output temp of the cylinder exhaust, = but that doesn't mean that the actual recorded/reported temperature = isn't the real temperature that must be considered when operating the = engine within the temperature tolerance of the components. Or am I = missing something? Gary R ------=_NextPart_000_0034_01C41487.3EE7DDE0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
The point being that even the maximum = temperature=20 shown will change relative to altitude and a bunch of the many the = other=20 parameters. It changes and is not static, Further since they are self=20 generators, they are not really calibrated. A true system would = take into=20 account the cold (meter) junction cabin temperature as = well.
 
----- Original Message -----
From:=20 Gary=20 Rodgers
Sent: Saturday, March 27, 2004 = 10:40=20 PM
Subject: [LML] relative = temps?

Cy
<=20 Since you are measuring the heat output, = anything and=20 every thing that effects engine power will effect the temperature. = Probe=20 location, cylinder cooling, ambient air temp, altitude, throttle = setting,=20 turbo boost if you have it, engine condition, timing, spark plug = condition,=20 air humidity, mag condition, impulse spring condition, exhaust system=20 condition, gasoline. airfilter condition, and I'll bet there are = some I=20 have missed. Between cylinders the probe location, valve condition,=20 baffling(cooling), and injectors can and do change the indicated temps = for=20 each cylinder.>
 
Guess I'm = confused about your=20 'relative' reference as well.  All the conditions you describe = affect the=20 output temp of the cylinder exhaust, but that doesn't mean that the=20 actual recorded/reported temperature isn't the real = temperature that=20 must be considered when operating the engine within the temperature = tolerance=20 of the components.  Or am I missing = something?
 
 
Gary R
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