Return-Path: Received: from [24.25.9.100] (HELO ms-smtp-01-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.2b2) with ESMTP id 3181327 for flyrotary@lancaironline.net; Tue, 20 Apr 2004 16:00:22 -0400 Received: from ms-mss-03-ce0-1 ([10.10.5.86]) by ms-smtp-01-eri0.southeast.rr.com (8.12.10/8.12.7) with ESMTP id i3KK0JSm003275 for ; Tue, 20 Apr 2004 16:00:20 -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 <0HWH004DEJKJCN@ms-mss-03.southeast.rr.com> for flyrotary@lancaironline.net; Tue, 20 Apr 2004 16:00:19 -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 16:00:19 -0400 Date: Tue, 20 Apr 2004 16:00:19 -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: multipart/mixed; boundary="Boundary_(ID_Rr3m+xRcU+eq5OYEr165JA)" Content-language: en X-Accept-Language: en Priority: normal X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. --Boundary_(ID_Rr3m+xRcU+eq5OYEr165JA) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7BIT Content-disposition: inline Just another point that sorta' hit me in the head (if you ever see my head, you'll understand that happens a lot). One of the aviation magazines I was reading (can't remember which) had one of those "barely survived" stories about winter flying. The guy said it was so cold out that his engine was running rough and he didn't have enough cabin heat. His solution was to put it in a such an extreme climb configuration that it wouldn't actually climb. Full power and still slow, he could get the engine to heat up. He'd lower the nose when he started getting warm again. Claimed he flew for hours like that. This wasn't a watercooled engine, but the idea is the same. There is such a thing as too much cooling. --Boundary_(ID_Rr3m+xRcU+eq5OYEr165JA) Content-type: message/rfc822 Content-disposition: inline Return-path: Received: from ms-mta-01-eri0 (ms-mta-01-qfe1 [10.10.5.70]) by ms-mss-03.southeast.rr.com (iPlanet Messaging Server 5.2 HotFix 1.21 (built Sep 8 2003)) with ESMTP id <0HWH004ILJ4FCN@ms-mss-03.southeast.rr.com> for echristley@nc.rr.com; Tue, 20 Apr 2004 15:50:40 -0400 (EDT) Received: from ncmx03.mgw.rr.com (ncmx03.mgw.rr.com [24.25.4.97]) by ms-mta-01.southeast.rr.com (iPlanet Messaging Server 5.2 HotFix 1.21 (built Sep 8 2003)) with ESMTP id <0HWH0095YJ4F7T@ms-mta-01.southeast.rr.com> for echristley@nc.rr.com (ORCPT echristley@nc.rr.com); Tue, 20 Apr 2004 15:50:39 -0400 (EDT) Received: from logan.com (lancaironline.net [207.170.160.169]) by ncmx03.mgw.rr.com (8.12.10/8.12.8) with ESMTP id i3KJoaoW018990; Tue, 20 Apr 2004 15:50:36 -0400 (EDT) Date: Tue, 20 Apr 2004 08:39:52 -0600 From: Bill Dube Subject: [FlyRotary] Re: water coolant percentages Sender: Rotary motors in aircraft To: Rotary motors in aircraft Reply-to: Rotary motors in aircraft Message-id: MIME-version: 1.0 Content-type: text/html; charset=us-ascii Content-transfer-encoding: 7BIT Precedence: list X-SpamCatcher-Score: 30 [X] X-Original-Message-Id: <5.2.1.1.0.20040420083519.04365808@mailsrvr.al.noaa.gov> X-Virus-Scanned: Symantec AntiVirus Scan Engine List-Unsubscribe: List-Archive: List-Id: X-Listserver: CommuniGate Pro LIST 4.2b2 Original-recipient: rfc822;echristley@nc.rr.com At 09:51 PM 4/19/2004 -0400, you wrote:
        Water will often freeze in the radiator if you do not have anti-freeze, even if the engine is warm. The freeze will start in a low flow (water) region and will then spread as the flow is further blocked, perhaps bursting radiator tubes as it progresses.
        
         I certainly can't prove this isn't true, but someone would sure have to prove that it is, before I could believe it.  I just don't see how rapidly moving, hot water is going to freeze. 

        "Rapidly moving" is the key phrase. The problem is that often the water does not move rapidly everywhere at all times. For example, some corner of the radiator (like the drain cock) may have a lot of air cooling, but very little water movement. 

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