X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ispmxmta05-srv.alltel.net ([166.102.165.166] verified) by logan.com (CommuniGate Pro SMTP 5.0.6) with ESMTP id 927680 for flyrotary@lancaironline.net; Sun, 15 Jan 2006 17:27:14 -0500 Received-SPF: pass receiver=logan.com; client-ip=166.102.165.166; envelope-from=montyr2157@alltel.net Received: from Thorstwin ([4.226.237.125]) by ispmxmta05-srv.alltel.net with SMTP id <20060115222627.YPAS8731.ispmxmta05-srv.alltel.net@Thorstwin> for ; Sun, 15 Jan 2006 16:26:27 -0600 Message-ID: <000d01c61a22$be8252e0$7dede204@Thorstwin> From: "Monty Roberts" To: Subject: 13B and Renesis oil pans Date: Sun, 15 Jan 2006 16:26:34 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000A_01C619F0.734A9170" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_000A_01C619F0.734A9170 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Rusty,=20 I know of at least two guys running 12A's in racers that ran a good = quality water to oil heat exchanger with good success. You do, of = course, have to increase the size of your radiator/s to keep up with the = increased heat rejection. Paul L of other site fame dislikes them, (read = condems them to Hades), but they should work well if sized properly. = This is another thing that lead to big arguements, excomunications, etc. = It was very similar to the electric water pump arguement. I would like = to run one for several reasons including smaller size, simpler ducting, = and more layout flexibility. I plan to run 2 radiators in the RV-10, and = it would be much easier to make them a bit larger and just have two = ducts. Running a third large oil to air heat exchanger, and the required = ductwork, while I have the room for it, is still a pain. The water to = oil exchanger would be a better fit, and allows the oil to warm up = faster in cold climates as well. Bill Bill, I looked at doing the same thing. When I ran the numbers, the amount of = heat rejected from the oil cooler was quite large, on the order of 80 hp = or so worth of heat for a steady state 250 hp engine. The biggest = oil/water exchanger that Fluidyne had was not close to large enough. Few = of us will operate at that power level continuously. If you cruise at = 100 hp or so the heat load is only around 30hp For the oil cooler. I = think the radiator folks talk in BTUs/min.=20 I fully agree that it cleans things up immensely and would be a great = way to do things. You just need a really big oil/water unit. Monty ------=_NextPart_000_000A_01C619F0.734A9170 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Rusty,

I know of at least two = guys running=20 12A's in racers that ran a good quality water to oil heat exchanger with = good=20 success. You do, of course, have to increase the size of your radiator/s = to keep=20 up with the increased heat rejection. Paul L of other site fame dislikes = them,=20 (read condems them to Hades), but they should work well if sized = properly. This=20 is another thing that lead to big arguements, excomunications, etc. It = was very=20 similar to the electric water pump arguement. I would like to run one = for=20 several reasons including smaller size, simpler ducting, and more layout = flexibility. I plan to run 2 radiators in the RV-10, and it would be = much easier=20 to make them a bit larger and just have two ducts. Running a third large = oil to=20 air heat exchanger, and the required ductwork, while I have the room for = it, is=20 still a pain. The water to oil exchanger would be a better fit, and = allows the=20 oil to warm up faster in cold climates as well.

Bill

Bill,

I looked at doing the same thing. When = I ran the=20 numbers, the amount of heat rejected from the oil cooler was quite = large, on the=20 order of 80 hp or so worth of heat for a steady state 250 hp engine. The = biggest=20 oil/water exchanger that Fluidyne had was not close to large enough. Few = of us=20 will operate at that power level continuously. If you cruise at 100 = hp or=20 so the heat load is only around 30hp For the oil cooler. I = think the=20 radiator folks talk in BTUs/min.

I fully agree that it cleans things=20 up immensely and would be a great way to do things. You = just need=20 a really big oil/water unit.

Monty

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