X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ms-smtp-03.southeast.rr.com ([24.25.9.102] verified) by logan.com (CommuniGate Pro SMTP 5.1c.2) with ESMTP id 1239203 for flyrotary@lancaironline.net; Sun, 16 Jul 2006 20:27:24 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.102; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-111-186.carolina.res.rr.com [24.74.111.186]) by ms-smtp-03.southeast.rr.com (8.13.6/8.13.6) with SMTP id k6H0QbVs009910 for ; Sun, 16 Jul 2006 20:26:39 -0400 (EDT) Message-ID: <000901c6a937$b53606b0$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Cooling coupling Date: Sun, 16 Jul 2006 20:26:54 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0006_01C6A916.2DC779A0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2869 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2869 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0006_01C6A916.2DC779A0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Al, I don't know about lowering coolant temps affect on oil temp. = However, I can tell you that when I lowered my oil temp by approx 30 deg = F my coolant went temp went down 15F. Ed ----- Original Message -----=20 From: Al Gietzen=20 To: Rotary motors in aircraft=20 Sent: Sunday, July 16, 2006 5:38 PM Subject: [FlyRotary] Cooling coupling I'm curious how much thermal 'coupling' there is between the oil and = water cooling in the engine; and whether it is more one way than the = other. IOW; if I could lower the coolant temp by 20 degrees, how much = effect would that have on the oil temp, if any; and vice versa. I'm thinking about this regarding cooling on the ground, and if I'm = going to work on reducing one or the other, which might have the greater = benefit. As it is now, the oil gets to 220F about the time the coolant = gets to 210F. Options under consideration are a fan behind the coolant = rad; and a water spray setup for the oil cooler. Al ------=_NextPart_000_0006_01C6A916.2DC779A0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Al, I don't know about lowering coolant temps = affect on=20 oil temp.  However, I can tell you that when I lowered my oil temp = by=20 approx 30 deg F my coolant went temp went down 15F.
 
Ed
----- Original Message -----
From:=20 Al = Gietzen=20
Sent: Sunday, July 16, 2006 = 5:38 PM
Subject: [FlyRotary] Cooling=20 coupling

I=92m curious how much = thermal=20 =91coupling=92 there is between the oil and water cooling in the = engine; and=20 whether it is more one way than the other.  IOW; if I could lower = the=20 coolant temp by 20 degrees, how much effect would that have on the oil = temp,=20 if any; and vice versa.

 

I=92m thinking about = this=20 regarding cooling on the ground, and if I=92m going to work on = reducing one or=20 the other, which might have the greater benefit.  As it is now, = the oil=20 gets to 220F about the time the coolant gets to 210F.  Options = under=20 consideration are a fan behind the coolant rad; and a water spray = setup for=20 the oil cooler.

 

Al

 

 

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