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Return-Path: <13brv3@bellsouth.net> Received: from imf17aec.mail.bellsouth.net ([205.152.59.65] verified) by logan.com (CommuniGate Pro SMTP 4.1.5) with ESMTP id 2644301 for flyrotary@lancaironline.net; Mon, 20 Oct 2003 21:51:12 -0400 Received: from rad ([65.80.160.144]) by imf17aec.mail.bellsouth.net (InterMail vM.5.01.05.27 201-253-122-126-127-20021220) with ESMTP id <20031021015111.BXCN1816.imf17aec.mail.bellsouth.net@rad> for ; Mon, 20 Oct 2003 21:51:11 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "Flyrotary List" Subject: temps behind radiator? Date: Mon, 20 Oct 2003 20:51:13 -0500 Message-ID: <004d01c39775$cf673080$6001a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_004E_01C3974B.E6912880" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 This is a multi-part message in MIME format. ------=_NextPart_000_004E_01C3974B.E6912880 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Greetings, =20 In trying to make sense of my latest cooling problems, I've thought of = yet another variable (just what I need ). When I initially installed the = new Setrab oil cooler (behind the radiator), the oil temps never got above = 180F, even in a climb to 10000 ft. The water temps were being controlled by = the thermostat, so they were 180 as well. Since then, I've tried to even up = the water and oil temps, by blocking off part (half) of the radiator, and removing the thermostat. The goal was to figure out how large the Rev 2 radiator needs to be. The initial indication is that this may have = caused my oil temps to be high. Water is up to maybe 160F max, so there still seems to be too much radiator, but oil will top 220F if allowed. =20 =20 What has just occurred to me, is that by blocking off part of the = radiator, and raising the water temp, I'm probably increasing the air temp that = the oil cooler sees behind the radiator. Has anyone measured the air temp behind the radiator when the water temp is around 160 or 180? I'm = curious just how hot this is. =20 =20 Bottom line is that I'm thinking I may have to put the oil cooler in = front of the radiator, and leave the radiator oversized enough to compensate = for the hot air from the oil cooler. FWIW- if you've got the space, I = highly recommend keeping the oil and water cooler separate, as most everyone = (with sense) knows already :-) =20 Cheers, Rusty (need beer to cool my brain) =20 =20 =20 ------=_NextPart_000_004E_01C3974B.E6912880 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

Greetings,

In trying to = make sense of=20 my latest cooling problems, I've thought of yet another variable (just = what I=20 need <g>). When I initially installed the new Setrab oil = cooler=20 (behind the radiator), the oil temps never got above 180F, even in a = climb to=20 10000 ft. The water temps were being controlled by the thermostat, = so they=20 were 180 as well. Since then, I've tried to even up the water and = oil=20 temps, by blocking off part (half) of the radiator, and removing the=20 thermostat. The goal was to figure out how large the Rev 2 = radiator=20 needs to be. The initial indication is that this may have caused = my oil=20 temps to be high. Water is up to maybe 160F max, = so there=20 still seems to be too much radiator, but oil will top 220F if=20 allowed.

What has just = occurred to=20 me, is that by blocking off part of the radiator, and raising the water=20 temp, I'm probably increasing the air temp that the oil cooler sees = behind=20 the radiator. Has anyone measured the air temp behind = the=20 radiator when the water temp is around 160 or 180? I'm curious = just how=20 hot this is.

Bottom line is = that I'm=20 thinking I may have to put the oil cooler in front of the = radiator,=20 and leave the radiator oversized enough to compensate for the hot air = from the=20 oil cooler. FWIW- if you've got the space, I highly = recommend=20 keeping the oil and water cooler separate, as most everyone (with = sense)=20 knows already :-)

Cheers,

Rusty (need = beer to cool my=20 brain)

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