X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from host.roblinphoto.com ([72.52.218.78] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTPS id 3856985 for flyrotary@lancaironline.net; Thu, 17 Sep 2009 00:03:09 -0400 Received-SPF: pass receiver=logan.com; client-ip=72.52.218.78; envelope-from=bob@bob-white.com Received: from c-68-35-128-192.hsd1.nm.comcast.net ([68.35.128.192]:53223 helo=quail) by host.roblinphoto.com with esmtpa (Exim 4.69) (envelope-from ) id 1Mo8CW-0000Uy-CS for flyrotary@lancaironline.net; Wed, 16 Sep 2009 22:02:32 -0600 Date: Wed, 16 Sep 2009 22:02:29 -0600 From: Bob White To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Cooling Message-Id: <20090916220229.7f0ad0fc.bob@bob-white.com> In-Reply-To: References: X-Mailer: Sylpheed 2.6.0 (GTK+ 2.14.4; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - host.roblinphoto.com X-AntiAbuse: Original Domain - lancaironline.net X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - bob-white.com Hi John, Try running on the B controller. The inlet air temp sensor doesn't affect mixture on the B controller. Flying will probably result in better air flow through the cowling, but not guaranteed on an untested configuration. Taxiing into a good stiff breeze could give you some indication of whether the higher air speed will give better cooling. Bob W. On Wed, 16 Sep 2009 23:21:20 -0400 "John" wrote: > Something is making the mixture run rich as the water temperature reaches 195 after I ran the engine tonight about 20 minutes at 1800 rpm. Could it have something to do with the temp sensor in the inlet air that is happening with the cowling on. It doesn't do it with the cowling off. Tomorrow I'll look at getting a digital thermometer at Radio Shack to tape to the fuel pump outlet. Will flying help the airflow though the cowling to help cool things better. JohnD -- N93BD - Rotary Powered BD-4 - http://www.bob-white.com 3.8 Hours Total Time and holding Cables for your rotary installation - http://roblinstores.com/