Return-Path: Received: from [209.228.35.126] (HELO c015.snv.cp.net) by logan.com (CommuniGate Pro SMTP 4.1.8) with SMTP id 2923244 for flyrotary@lancaironline.net; Thu, 08 Jan 2004 12:16:09 -0500 Received: (cpmta 9561 invoked from network); 8 Jan 2004 09:16:02 -0800 Received: from 148.63.203.249 (HELO B9Creations.com) by smtp.b9creations.com (209.228.35.126) with SMTP; 8 Jan 2004 09:16:02 -0800 X-Sent: 8 Jan 2004 17:16:02 GMT Message-ID: <3FFD9046.905@B9Creations.com> Date: Thu, 08 Jan 2004 10:15:50 -0700 From: Michael Joyce Reply-To: MikeJ@B9Creations.com Organization: Team B9 User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Cooling References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Another newbie question. After reading Paul Lamar's cooling text: http://home.earthlink.net/~rotaryeng/how-to-cool12.txt I was left wondering if water coolant could be replaced by a liquid with a higher boiling point (such as oil). That combined with running the coolant at a constant higher temp might lead to an increase in cooling efficiency since the difference between the external air and the coolant could be increased. Is there a danger letting the temps of the rotor housings operate at a higher temp as long as we are below the melting point by a safe margin(say 350 vs the water cooled 200-250)? Ignorance is bliss! :-) MikeJ