X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [129.116.87.143] (HELO MAIL01.austin.utexas.edu) by logan.com (CommuniGate Pro SMTP 4.3.4) with ESMTP id 989806 for flyrotary@lancaironline.net; Thu, 09 Jun 2005 08:40:49 -0400 Received-SPF: none receiver=logan.com; client-ip=129.116.87.143; envelope-from=mark.steitle@austin.utexas.edu X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C56CF0.5BB59894" Subject: RE: [FlyRotary] Re: coolant leak Date: Thu, 9 Jun 2005 07:40:03 -0500 Message-ID: <87DBA06C9A5CB84B80439BA09D86E69E016C19E0@MAIL01.austin.utexas.edu> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] Re: coolant leak Thread-Index: AcVsoNoQWav7ZE2/R727CP04JqSKxwAT0bkg From: "Mark R Steitle" To: "Rotary motors in aircraft" This is a multi-part message in MIME format. ------_=_NextPart_001_01C56CF0.5BB59894 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Isn't there a tester that checks for the amount of CO2 in the coolant? This would be able to spot small leaks, before they become catastrophic problems. =20 Mark S. =20 ________________________________ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ian Dewhirst Sent: Wednesday, June 08, 2005 10:10 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: coolant leak =20 Hi David, =20 I really really think that a cooling system that consumes coolant is leaking it somewhere, either venting water vapor to the atmosphere or leaking. I don't follow how your coolant level can be going down and yet you still have residual pressure, shouldn't the pressure drop to zero as the coolant is consumed over time? =20 =20 A rotary is unique in that depending on where an o-ring failure occurs relative to the intake port you can end up with a little problem or a big problem. As you rotate past the intake port the compression chamber pressure goes from 0 to over a hundred PSI, once the plug fires the pressure skyrockets due to combustion.=20 =20 -- Ian If I were getting combustion pressure in my cooling system I think I would be boiling off my coolant PDQ. But I find that it only drops very slowly, about like in my car. =20 But now I understand how Ed discovered his problem. =09 --=20 Dave Leonard Turbo Rotary RV-6 N4VY http://members.aol.com/_ht_a/rotaryroster/index.html=20 http://members.aol.com/vp4skydoc/index.html=20 ------_=_NextPart_001_01C56CF0.5BB59894 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Isn’t there a tester that = checks for the amount of CO2 in the coolant? This would be able to spot small = leaks, before they become catastrophic problems.

Mark = S.

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ian Dewhirst
Sent: Wednesday, June 08, = 2005 10:10 PM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Re: = coolant leak

Hi = David,

I really really think that a = cooling system that consumes coolant is leaking it somewhere, either venting = water vapor to the atmosphere or leaking. I don't follow how your coolant level can be going down and = yet you still have residual pressure, shouldn't the pressure drop to zero as the coolant is consumed over = time?

A rotary is unique in that = depending on where an o-ring failure occurs relative to the intake port you = can end up with a little problem or a big problem. As you = rotate past the intake port the compression chamber pressure goes from 0 = to over a hundred PSI, once the plug fires the pressure = skyrockets due to combustion.

-- Ian

If I were getting combustion pressure in my cooling system I = think I would be boiling off my coolant PDQ. But I find that it only drops = very slowly, about like in my car.

But now I understand how Ed discovered his problem.

--
Dave Leonard
Turbo Rotary RV-6 N4VY
http://memb= ers.aol.com/_ht_a/rotaryroster/index.html
http://members.aol.c= om/vp4skydoc/index.html

------_=_NextPart_001_01C56CF0.5BB59894--