Return-Path: Received: from mail.viclink.com ([66.129.220.6] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2782859 for flyrotary@lancaironline.net; Wed, 03 Dec 2003 23:36:46 -0500 Received: from mail.viclink.com (p031.AS1.viclink.com [66.129.192.31]) by mail.viclink.com (8.11.7/8.11.7) with ESMTP id hB44ain01805 for ; Wed, 3 Dec 2003 20:36:44 -0800 (PST) Message-ID: <3FCEB89C.7050602@mail.viclink.com> Date: Wed, 03 Dec 2003 20:31:24 -0800 From: Perry Mick User-Agent: Mozilla/5.0 (Windows; U; Win95; en-US; rv:1.0.1) Gecko/20020823 Netscape/7.0 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Heaters/defrosters References: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-RAVMilter-Version: 8.4.3(snapshot 20030217) (mail.viclink.com) Ken Welter wrote: > If you are planing on flying into real cold weather I think you > would have to recirculate inside are rather than try and heat cold > outside air. > Still could be done with two flapper valves and a fan. > > Ken > > >> I'm building a cozy MKIV, and I plan to use a heater core, which will >> run >> coolant through it all of the time, and act as secondary cooling. I >> will >> then use a flapper to either dump the output air from the heater core >> into >> the engine compartment, or into the cabin. >> >> Steve Brooks > Steve, that is exactly my system. It works very well, but Ken is right. On very cold days when I go very high and it's even colder, the engine is running so cool that there isn't much heat. If you live in the Midwest you would probably need the recirculation option. -- Perry Mick http://www.ductedfan.com