X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ispmxmta06-srv.alltel.net ([166.102.165.167] verified) by logan.com (CommuniGate Pro SMTP 5.0.4) with ESMTP id 889928 for flyrotary@lancaironline.net; Tue, 20 Dec 2005 12:28:06 -0500 Received-SPF: pass receiver=logan.com; client-ip=166.102.165.167; envelope-from=montyr2157@alltel.net Received: from Thorstwin ([4.89.243.39]) by ispmxmta06-srv.alltel.net with SMTP id <20051220172716.QZUK3660.ispmxmta06-srv.alltel.net@Thorstwin> for ; Tue, 20 Dec 2005 11:27:16 -0600 Message-ID: <000e01c6058a$9feb9500$27f35904@Thorstwin> From: "Monty Roberts" To: Subject: Heat Exchangers/Cooling Date: Tue, 20 Dec 2005 11:27:16 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000B_01C60558.54ACA7A0" 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_000B_01C60558.54ACA7A0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Ed A., Another question if you will suffer it. The stock 2nd gen oil cooler has a volume somewhere around 200 in^3. 1/3 heat load to the oil 2/3 to the water Using a core that is 9in long X 4in thick yields a cooler stack height = of around 5.6 200/(9X4)=3D5.5555 to equal the stock cooler in volume = (granted it may not be as efficient at 4 in thick, but it is also moving = at 200+ mph something the stock cooler was not designed to do) There is a really nice SINGLE PASS 4in thick evap core that has a core = area of 9X6.375 with tension straps and heavier end plates. This is a volume of 229.5 which is around 15% greater than the stock oil = cooler. If I use 3 of these, one for oil, and 2 for water do you think I am = pushing my luck a little too far? Seems like it should work if the duct work does it's job. I have a = little more freedom in shaping my diffuser and exit than you guys = because I am not working around the engine and an existing cowl. At first they seem a little small, but when you stick them together it = is a cooling block that is 19.125X12X4 with the tanks (19.125X9X4 = without tanks) which doesn't intuitively seem so small for something = going 200 mph. Trying to save having to drill the baffles out, plus money, plumbing, = and weight. I think there is another 2 pass cooler somewhere between the 8in thick = and 6.375 thick model that may be a bit more conservative. What do you think, have I lost my mind on this one? Monty =20 ------=_NextPart_000_000B_01C60558.54ACA7A0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Ed A.,

Another question if you will suffer=20 it.

The stock 2nd gen oil cooler has a = volume=20 somewhere around 200 in^3.

1/3 heat load to the oil

2/3 to the water

Using a core that is 9in long X 4in = thick yields a=20 cooler stack height of around 5.6 = 200/(9X4)=3D5.5555 to=20 equal the stock cooler in volume (granted it may not be as efficient at = 4 in=20 thick, but it is also moving at 200+ mph something the stock cooler was = not=20 designed to do)

There is a really nice = SINGLE=20 PASS 4in thick evap core that has a core area of = 9X6.375=20 with tension straps and heavier end plates.

This is a volume of 229.5 which is = around 15%=20 greater than the stock oil cooler.

If I use 3 of these, one for oil, and 2 = for water=20 do you think I am pushing my luck a little too far?

Seems like it should work if the duct = work does=20 it's job. I have a little more freedom in shaping my diffuser and exit = than you=20 guys because I am not working around the engine and an existing=20 cowl.

At first they seem a little small, but = when you=20 stick them together it is a cooling block that is 19.125X12X4 with the = tanks=20 (19.125X9X4 without tanks) which doesn't intuitively seem so small for = something=20 going 200 mph.

Trying to save having to drill the = baffles=20 out, plus money, plumbing, and weight.

I think there is another 2 pass cooler = somewhere=20 between the 8in thick and 6.375 thick model that may be a bit more=20 conservative.

What do you think, have I lost my mind = on this=20 one?

Monty

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