Return-Path: Received: from [65.54.169.108] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 3067641 for flyrotary@lancaironline.net; Sun, 07 Mar 2004 11:33:14 -0500 Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Sun, 7 Mar 2004 08:33:11 -0800 Received: from 64.159.105.65 by bay3-dav78.bay3.hotmail.com with DAV; Sun, 07 Mar 2004 16:33:11 +0000 X-Originating-IP: [64.159.105.65] X-Originating-Email: [lors01@msn.com] X-Sender: lors01@msn.com From: "Tracy Crook" To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: Ideal Cooling System Plumbing (wasRe:[FlyRotary]Re:overflow Date: Sun, 7 Mar 2004 11:33:10 -0500 MIME-Version: 1.0 X-Mailer: MSN Explorer 7.02.0011.2700 Content-Type: multipart/alternative; boundary="----=_NextPart_001_0006_01C40437.F7E1F6B0" Message-ID: X-OriginalArrivalTime: 07 Mar 2004 16:33:11.0141 (UTC) FILETIME=[E14C0150:01C40461] ------=_NextPart_001_0006_01C40437.F7E1F6B0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable > FIRST the pressure drops precipitously, and THEN the coolant level =20 > starts to go down ... FINALLY the temps start to rise (provided the =20 > temp sender is submerged in what water remains). =20 Just a brief comment on this part. Coolant level sensors are of almost n= o use in this application. It is commonly assumed that the temp gauge re= ads low as soon as the sensor is no longer submerged. Not true. It only= drops after the coolant is all boiled away because steam will heat the s= ensor. If you haven't caught the problem long before this, it's too late= anyway. =20 Tracy ------=_NextPart_001_0006_01C40437.F7E1F6B0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

> &nbs= p; FIRST the pressure drops precipitously, and THEN the coolant level > starts to go down ... FINALLY the temps start to rise (provided the=
> temp sender is submerged in what water remains).

Just a brief comment on this part. Coolant leve= l sensors are of almost no use in this application. It is commonly = assumed that the temp gauge reads low as soon as the sensor is no longer = submerged. Not true. It only drops after the coolant is all b= oiled away because steam will heat the sensor. If you haven't caugh= t the problem long before this, it's too late anyway.

&n= bsp;

Tracy

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