Return-Path: Received: from [24.25.9.103] (HELO ms-smtp-04-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.3c3) with ESMTP id 853753 for flyrotary@lancaironline.net; Sun, 03 Apr 2005 20:46:17 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.103; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-185-127.carolina.res.rr.com [24.74.185.127]) by ms-smtp-04-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id j340jTL5014023 for ; Sun, 3 Apr 2005 20:45:30 -0400 (EDT) Message-ID: <003601c538af$99a50c10$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Cooling -Learned a lot Date: Sun, 3 Apr 2005 20:45:29 -0400 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 Hi Ed K, The rad would have 100 sq inch more core face area and as much volume as two GM cores, so assuming the airflow is adequate and the engine power in the same range as is common in our application of two GM cores - say 160 - 190 HP or there abouts, I can see no reason why it could not be made to work. BUT a lot would depend on the ducting and airflow. For instance if the rad is perpendicular to the air flow you get the maximum benefit. If the air flow entering the core is too oblique an angle then you can get turbulence at the entrance to the core passages hindering good cooling - or if the exit is obstructed by being two close to the firewall, or if the diffuser does a poor job - for a couple of examples. Having it exposed to the radiant heat of a unshielded exhaust system could also have an adverse effect. So the potential for adequate cooling is there - whether it does or not depends on how its installed and other factors mentioned. Ed A. ----- Original Message ----- From: "Ed Klepeis" To: "Rotary motors in aircraft" Sent: Sunday, April 03, 2005 7:04 PM Subject: [FlyRotary] Re: Cooling -Learned a lot > Dear Ed > How about a rad 16x18x2.25 with a mazda oil cooler along side mounted > in a sq tube frame hung under the eng mount in rubber mounts, could you go > for such a set up. let me know. > regards Ed K >