X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from smtpauth05.mail.atl.earthlink.net ([209.86.89.65] verified) by logan.com (CommuniGate Pro SMTP 5.0c2) with ESMTP id 718236 for flyrotary@lancaironline.net; Sun, 11 Sep 2005 05:52:39 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.65; envelope-from=Dastaten@earthlink.net Received: from [24.238.206.157] (helo=earthlink.net) by smtpauth05.mail.atl.earthlink.net with asmtp (Exim 4.34) id 1EEOV8-00046D-8L for flyrotary@lancaironline.net; Sun, 11 Sep 2005 05:51:54 -0400 Message-ID: <4323FDE4.6040908@earthlink.net> Date: Sun, 11 Sep 2005 04:50:28 -0500 From: David Staten User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Optimal GPM water pump flow. References: In-Reply-To: Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit X-ELNK-Trace: 9a30bff84e6cb88f95c85d38d22416599ef193a6bfc3dd482a126b70f6e2c8406afef1e997a96cf03396037c9e1b016b350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 24.238.206.157 www.racemate.com They were unable to find the photo of the Mazda install but they say the did a few. I am going to take the plunge and get one..

Dave

Kelly Troyer wrote:

Dave,

Do I understand right ?? This is a direct drive pump ?? Any photos

and or speck's ??

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Kelly Troyer
Dyke Delta/13B/RD1C/EC2
-------------- Original message from David Staten <Dastaten@earthlink.net>: --------------

Al Gietzen wrote:

Even without further info I can suggest that the optimum for overall system design is going to be with a loop delta-T in the range of 20-30 F. So at 225 hp is going to require 27 – 35 gpm for pure water, and about 37 – 50 gpm with 50/50 water/glycol mix. Of course it is difficult to detmine ‘optimum’ heat exchanger design to go with it. Lower flow/higher delta-T needs more exchanger area, which is determined by airflow requirements. Steady 225 hp will need something around 6000 cfm air flow on a 90F day.

I measured pretty close to 50 gpm @ 6000 rpm on the dyno with no thermostat and unknown cooling loop pressure drop.

FWIW,

Al

I should be golden then.. the race mate products flow around 130-140 GPM according to their documentation. If they are accurate, and there is minimal restriction, there should be more than enough flow.

Dave
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