X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mtiwmhc13.worldnet.att.net ([204.127.131.117] verified) by logan.com (CommuniGate Pro SMTP 5.0c1) with ESMTP id 676176 for flyrotary@lancaironline.net; Sat, 20 Aug 2005 18:02:35 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.131.117; envelope-from=keltro@att.net Received: from 204.127.135.60 ([204.127.135.60]) by worldnet.att.net (mtiwmhc13) with SMTP id <2005082022015111300n2viue>; Sat, 20 Aug 2005 22:01:51 +0000 Received: from [209.247.222.105] by 204.127.135.60; Sat, 20 Aug 2005 22:01:50 +0000 From: keltro@att.net (Kelly Troyer) To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: Oil Cooler Connections Date: Sat, 20 Aug 2005 22:01:50 +0000 Message-Id: <082020052201.20312.4307A84D000C7AE200004F582160383116019D9B040A05@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_20312_1124575310_0" --NextPart_Webmail_9m3u9jl4l_20312_1124575310_0 Content-Type: text/plain Content-Transfer-Encoding: 8bit Bob & Bob, Oil cooler threads are all 18 mm........Not sure how reverse flow will effect thermostat operation........Even when oil is cold (less than 150 f) thermostat open, about 10 % of oil still flows through the cooler........Reverse flow will make all the oil from the engine flow all the way through the cooler (further cooling it) before contacting the thermostat and actuating it........May not be a problem except in a cold climate where it could retard warmup or not let oil reach desired operating temp at all.........FWIW -- Kelly Troyer Dyke Delta/13B/RD1C/EC2 -------------- Original message from "Bob Perkinson" : -------------- > Bob, > What year model is the cooler that you have? Attached are a couple of > photos of the cooler that I have. It came with straight fittings, not banjo > fittings. I am not sure what size the fittings threads are. I think the one > that I have is from an earlier model but I can't be positive of that. The > diagram that is in the Haynes manual shows a drawing of the oil system that > has a cooler that is the same as in your picture. It shows the inlet where > you indicate outlet and the outlet where you have the inlet. If I use this > particular cooler it is my intention to mount it with the Thermostat facing > up. > > Bob Perkinson > Hendersonville, TN. > RV9A N658RP Reserved > If nothing changes > Nothing changes > --NextPart_Webmail_9m3u9jl4l_20312_1124575310_0 Content-Type: text/html Content-Transfer-Encoding: 8bit

Bob & Bob,

Oil cooler threads are all 18 mm........Not sure how reverse flow will effect thermostat

operation........Even when oil is cold (less than 150 f) thermostat open, about 10 % of

oil still flows through the cooler........Reverse flow will make all the oil from the engine

flow all the way through the cooler (further cooling it) before contacting the thermostat

and actuating it........May not be a problem except in a cold climate where it could retard

warmup or not let oil reach desired operating temp at all.........FWIW

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

-------------- Original message from "Bob Perkinson" <bobperk@bellsouth.net>: --------------

> Bob,
> What year model is the cooler that you have? Attached are a couple of
> photos of the cooler that I have. It came with straight fittings, not banjo
> fittings. I am not sure what size the fittings threads are. I think the one
> that I have is from an earlier model but I can't be positive of that. The
> diagram that is in the Haynes manual shows a drawing of the oil system that
> has a cooler that is the same as in your picture. It shows the inlet where
> you indicate outlet and the outlet where you have the inlet. If I use this
> particular cooler it is my intention to mount it with the Thermostat facing
> up.
>
> Bob Perkinson
> Hendersonville, TN.
> RV9A N658RP Reserved
> If nothing changes
> Nothing changes
>

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