Return-Path: Received: from [24.25.9.103] (HELO ms-smtp-04-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.2b2) with ESMTP id 3180559 for flyrotary@lancaironline.net; Tue, 20 Apr 2004 10:14:30 -0400 Received: from ms-mss-03-ce0-1 ([10.10.5.84]) by ms-smtp-04-eri0.southeast.rr.com (8.12.10/8.12.7) with ESMTP id i3KEESC8013418 for ; Tue, 20 Apr 2004 10:14:28 -0400 (EDT) Received: from southeast.rr.com (localhost [127.0.0.1]) by ms-mss-03.southeast.rr.com (iPlanet Messaging Server 5.2 HotFix 1.21 (built Sep 8 2003)) with ESMTP id <0HWH0032S3K3PX@ms-mss-03.southeast.rr.com> for flyrotary@lancaironline.net; Tue, 20 Apr 2004 10:14:27 -0400 (EDT) Received: from [10.10.1.24] (Forwarded-For: [143.209.7.42]) by ms-mss-03.southeast.rr.com (mshttpd); Tue, 20 Apr 2004 10:14:27 -0400 Date: Tue, 20 Apr 2004 10:14:27 -0400 From: echristley@nc.rr.com Subject: Re: [FlyRotary] Re: water coolant percentages To: Rotary motors in aircraft Reply-to: echristley@nc.rr.com Message-id: MIME-version: 1.0 X-Mailer: iPlanet Messenger Express 5.2 HotFix 1.21 (built Sep 8 2003) Content-type: text/plain; charset=us-ascii Content-language: en Content-transfer-encoding: 7BIT Content-disposition: inline X-Accept-Language: en Priority: normal X-Virus-Scanned: Symantec AntiVirus Scan Engine > > I suppose this might be possible at a low power setting and while > using a thermostat. The problem can be completely avoided if you > use a cowl flap for temperature control instead of thermostat. > Restrict the airflow through the rad and the coolant stays hot. > Reduced cooling drag is a bonus too. > Tracy > I have been toying with that idea for a long time, Tracey. The old Mack truck I owned had a mechanism that would open shutters when the radiator got warm. 'Course it was broken (I did say it was an OLD Mack, didn't I?) Does anyone know of an example of using this same technique to control a cowl flap? The closest I've seen is a controller off a VW that follows along the same concept.