Return-Path: Received: from BAY0-SMTP03.bay0.hotmail.com ([65.54.241.110] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 3067674 for flyrotary@lancaironline.net; Sun, 07 Mar 2004 12:22:20 -0500 X-Originating-IP: [4.76.77.3] X-Originating-Email: [lonnwood@msn.com] Received: from a9t2u1 ([4.76.77.3]) by BAY0-SMTP03.bay0.hotmail.com with Microsoft SMTPSVC(5.0.2195.5600); Sun, 7 Mar 2004 09:22:15 -0800 Message-ID: <003b01c4046a$c8bd2520$034d4c04@a9t2u1> From: "lonnwood" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Cooling System Dynamics Date: Sun, 7 Mar 2004 09:36:52 -0800 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0038_01C40427.B92100C0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4133.2400 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400 Return-Path: lonnwood@msn.com X-OriginalArrivalTime: 07 Mar 2004 17:22:15.0954 (UTC) FILETIME=[BC8ACF20:01C40468] This is a multi-part message in MIME format. ------=_NextPart_000_0038_01C40427.B92100C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Tracy, this has got me to thinking about an alarm system that would be = useful for the coolant pressure gauge. A simple pressure activated warning light would not be useful because = the pressure starts out at zero and gradually builds, then during different modes of flight when your engine = cools the pressure would go back down. Not having flown with a water cooled system yet I don't know how much it = would fluctuate.=20 Would it be worthwhile to have a small processor programmed to keep = track of engine temps and compare those to what the coolant pressure should be, then set the alarm off if = they don't add up? Lonnie The best advice I can give is to learn the behavior (not just the = static reading) of your coolant pressure gauge and pay attention to any = anomaly. It tells the whole story IF you know how to interpret it. Tracy Crook ------=_NextPart_000_0038_01C40427.B92100C0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Tracy, this has got me to thinking about an = alarm system=20 that would be useful for the coolant pressure gauge.
A simple pressure activated warning light would = not be=20 useful because the pressure starts out at zero and
gradually builds, then during different modes of = flight=20 when your engine cools the pressure would go back down.
Not having flown with a water cooled system yet = I don't=20 know how much it would fluctuate.
Would it be worthwhile to have a small processor = programmed to keep track of engine temps and compare
those to what the coolant pressure should be, = then set the=20 alarm off if they don't add up?
Lonnie
 
 
 
 
 
The best advice I can give is to learn the behavior (not just the = static=20 reading) of your coolant pressure gauge and pay attention to any=20 anomaly.  It tells the whole story IF you know how to interpret = it.
 
Tracy Crook
 
 
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