X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from elasmtp-kukur.atl.sa.earthlink.net ([209.86.89.65] verified) by logan.com (CommuniGate Pro SMTP 5.1.12) with ESMTP id 2331406 for flyrotary@lancaironline.net; Fri, 14 Sep 2007 16:31:17 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.65; envelope-from=Dastaten@earthlink.net Received: from [64.91.205.149] (helo=[192.168.1.100]) by elasmtp-kukur.atl.sa.earthlink.net with asmtp (Exim 4.34) id 1IWHoG-0004kD-PK for flyrotary@lancaironline.net; Fri, 14 Sep 2007 16:30:40 -0400 Message-ID: <46EAEF84.1060005@earthlink.net> Date: Fri, 14 Sep 2007 15:31:00 -0500 From: David Staten User-Agent: Mozilla Thunderbird 1.0.7 (Windows/20050923) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: How cool is too cool? References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-ELNK-Trace: 9a30bff84e6cb88f95c85d38d22416599ef193a6bfc3dd48f29bce9082def39506ef49256f0be32f08a8bb3e8e732a70350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 64.91.205.149 John Slade wrote: > >>I'd heard oil needs to see 212f minimum at some point so that it can > boil off moisture that develops. > >Actually, at 6000 feet, where a lot of folks fly, the boiling point > drops > >to 201F. At 10K feet, it is only 192. Perhaps thats true at ambient > pressure, but surely - not at 80 PSI. :) > John > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > But John. the oil is not at 80 psi all the time.. as a matter of fact, its at ambient pressure when sitting in your oil pan, before getting picked up and pumped... and after it drains from the components being lubricated. So we do not need to adjust the oil temp to account for the boiling point of water at whatever elevated PSI your oil pump puts out. Dave