X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mtiwmhc11.worldnet.att.net ([204.127.131.115] verified) by logan.com (CommuniGate Pro SMTP 5.0c2) with ESMTP id 718282 for flyrotary@lancaironline.net; Sun, 11 Sep 2005 09:06:45 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.131.115; envelope-from=keltro@att.net Received: from 204.127.135.60 ([204.127.135.60]) by worldnet.att.net (mtiwmhc11) with SMTP id <2005091113060011100ij6m1e>; Sun, 11 Sep 2005 13:06:00 +0000 Received: from [209.247.222.88] by 204.127.135.60; Sun, 11 Sep 2005 13:06:00 +0000 From: keltro@att.net (Kelly Troyer) To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: Optimal GPM water pump flow. Date: Sun, 11 Sep 2005 13:06:00 +0000 Message-Id: <091120051306.15804.43242BB80000412700003DBC2160383116019D9B040A05@att.net> X-Mailer: AT&T Message Center Version 1 (Feb 14 2005) X-Authenticated-Sender: a2VsdHJvQGF0dC5uZXQ= MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="NextPart_Webmail_9m3u9jl4l_15804_1126443960_0" --NextPart_Webmail_9m3u9jl4l_15804_1126443960_0 Content-Type: text/plain Content-Transfer-Encoding: 8bit Dave, Let us know what you end up with !! -- Kelly Troyer Dyke Delta/13B/RD1C/EC2 -------------- Original message from David Staten : -------------- 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 ?? -- Kelly Troyer Dyke Delta/13B/RD1C/EC2 -------------- Original message from David Staten : -------------- 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 -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/ -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/ --NextPart_Webmail_9m3u9jl4l_15804_1126443960_0 Content-Type: text/html Content-Transfer-Encoding: 8bit

Dave,

Let us know what you end up with !!

--
Kelly Troyer
Dyke Delta/13B/RD1C/EC2

-------------- Original message from David Staten <Dastaten@earthlink.net>: --------------

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 ??

--
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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