X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mtiwmhc12.worldnet.att.net ([204.127.131.116] verified) by logan.com (CommuniGate Pro SMTP 5.0.9) with ESMTP id 1094160 for flyrotary@lancaironline.net; Fri, 05 May 2006 23:35:16 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.131.116; envelope-from=keltro@att.net Received: from mwebmail36.att.net ([204.127.135.75]) by worldnet.att.net (mtiwmhc12) with SMTP id <20060506033432112005fefce>; Sat, 6 May 2006 03:34:32 +0000 Received: from [63.157.95.157] by mwebmail36.att.net; Sat, 06 May 2006 03:34:31 +0000 From: keltro@att.net (Kelly Troyer) To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: oil cooler lines Date: Sat, 06 May 2006 03:34:31 +0000 Message-Id: <050620060334.11519.445C1946000479A600002CFF2160466648019D9B040A05@att.net> X-Mailer: AT&T Message Center Version 1 (Feb 28 2006) X-Authenticated-Sender: a2VsdHJvQGF0dC5uZXQ= MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="NextPart_Webmail_9m3u9jl4l_11519_1146886471_0" --NextPart_Webmail_9m3u9jl4l_11519_1146886471_0 Content-Type: text/plain Content-Transfer-Encoding: 8bit Bob, One other comment........There is some difference of opinion among the group whether connecting coolers (oil or coolent) in series (as you propose) or in parallel is the most efficient method.........We have group members currently flying with both methods........Most that I am aware of that use both methods are for coolent systems as not many are using two oil coolers........I personally lean toward a parallel coolent system........Any comments from others in the group about this question would be welcome as I know we have several with experience or training in this area !! What would be most efficient for one system should probably apply to the other.......IMHO -- Kelly Troyer Dyke Delta/13B/RD1C/EC2 -------------- Original message from kenpowell@comcast.net: -------------- Bob, I think you should have made the lines larger to help lower presure drop in the long lines. I understand that the extra oil in the lines will be heavy but the pressure drop would be a tradeoff that I wouldn't want to make. Ken Powell Bryant, Arkansas 501-847-4721 C150 / RV-4 under construction -------------- Original message -------------- From: BMears9413@aol.com I'm running two oil coolers in the Spitfire. Due to the lengthe of the lines and volume of the two coolers I reduced my oil lines to AN8 (I think stock they were 10?) Now, before I close everything up I'm having second guessing. My total line length will be around 12'. I had planned on running the lines to one oil cooler, then the other, then back to the motor. Any comments? Bob Mears --NextPart_Webmail_9m3u9jl4l_11519_1146886471_0 Content-Type: text/html Content-Transfer-Encoding: 8bit

Bob,

One other comment........There is some difference of opinion among the group

whether connecting coolers (oil or coolent) in series (as you propose) or in

parallel is the most efficient method.........We have group members currently

flying with both methods........Most that I am aware of that use both methods

are for coolent systems as not many are using two oil coolers........I personally

lean toward a parallel coolent system........Any comments from others in the

group about this question would be welcome as I know we have several with

experience or training in this area !! What would be most efficient for one

system should probably apply to the other.......IMHO

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

-------------- Original message from kenpowell@comcast.net: --------------

Bob,

I think you should have made the lines larger to help lower presure drop in the long lines. I understand that the extra oil in the lines will be heavy but the pressure drop would be a tradeoff that I wouldn't want to make.

Ken Powell
Bryant, Arkansas
501-847-4721
C150 / RV-4 under construction

-------------- Original message --------------
From: BMears9413@aol.com

I'm running two oil coolers in the Spitfire. Due to the lengthe of the lines and volume of the two coolers I reduced my oil lines to AN8 (I think stock they were 10?) Now, before I close everything up I'm having second guessing. My total line length will be around 12'. I had planned on running the lines to one oil cooler, then the other, then back to the motor.

Any comments?

Bob Mears

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