Return-Path: Received: from [24.25.9.101] (HELO ms-smtp-02-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.2b5) with ESMTP id 147728 for flyrotary@lancaironline.net; Thu, 10 Jun 2004 16:12:19 -0400 Received: from EDWARD (clt25-78-058.carolina.rr.com [24.25.78.58]) by ms-smtp-02-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id i5AKBiNs023672 for ; Thu, 10 Jun 2004 16:11:45 -0400 (EDT) Message-ID: <000f01c44f27$29726c20$2402a8c0@EDWARD> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Cooling oil Date: Thu, 10 Jun 2004 16:11:48 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1409 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Virus-Scanned: Symantec AntiVirus Scan Engine ----- Original Message ----- From: "Joseph Berki" To: "Rotary motors in aircraft" Sent: Thursday, June 10, 2004 12:39 PM Subject: [FlyRotary] Re: Cooling oil > It would be interesting to measure flow in both engines. I thought that > both Lycoming and Mazda engines rejected 2/3 heat load through the > oil that is why I started going down this road. If the engines generated > the same Hp than the heat load should be similar. > > Joe Berki Joe, both engines may generate the same heat load, but the proportion rejected through the coolant in case of the Mazda is 2/3 of its waste heat while the oil rejects another 1/3 of the waste heat. Neither engine rejects anywhere near 2/3 of its waste heat through the oil. Most aircraft engines reject on the order of 300-600 BTU/Min through the oil, the Mazda at 160HP rejects approx 2446 BTU/Min through the oil. Ed Anderson