Return-Path: Received: from [24.25.9.101] (HELO ms-smtp-02-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2840223 for flyrotary@lancaironline.net; Sat, 06 Dec 2003 14:32:02 -0500 Received: from o7y6b5 (clt78-020.carolina.rr.com [24.93.78.20]) by ms-smtp-02-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id hB6JVvd3020016 for ; Sat, 6 Dec 2003 14:32:00 -0500 (EST) Message-ID: <000c01c3bc2f$1dea8760$1702a8c0@WorkGroup> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: K&M and Thick Radiators Date: Sat, 6 Dec 2003 14:28:24 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Virus-Scanned: Symantec AntiVirus Scan Engine From: To: "Rotary motors in aircraft" Sent: Saturday, December 06, 2003 11:37 AM Subject: [FlyRotary] Re: K&M and Thick Radiators > A tip on thick radiators. > I used 2 AC evaporator cores out of Lincoln town cars. > I did not seal the grooves at the end of the radiators but just allowed the > aluminum air ducts to ride onthe edges leaving small air passages at each > section. > The result was 240 Deg. F. coolant temp. in climb. > I then sealed these openings with RTV and in a full power climb to 3000 ft. i > saw 180 Deg. F. coolant temps. > The thick radiators MUST have sufficient stratic pressure to work properly. > > Hank H. > Agree, Hank. I've seen somewhere an estimate that a hole in a plenum with a total area of approx 1/2" and you can lose 20% of your air mass cooling effectiveness. So seal those plenums. I have fiberglass plenums that are sealed to the core face inside with foam weather striping. It do make a difference. Ed Anderson