X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.120] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTP id 2490089 for flyrotary@lancaironline.net; Thu, 15 Nov 2007 14:00:31 -0500 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.120; envelope-from=eanderson@carolina.rr.com Received: from edward2 ([24.74.103.61]) by cdptpa-omta03.mail.rr.com with SMTP id <20071115185953.NOPL19167.cdptpa-omta03.mail.rr.com@edward2> for ; Thu, 15 Nov 2007 18:59:53 +0000 Message-ID: <006801c827ba$05941410$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Harrison cores Date: Thu, 15 Nov 2007 14:02:08 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0065_01C82790.1C7431D0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3138 This is a multi-part message in MIME format. ------=_NextPart_000_0065_01C82790.1C7431D0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Yep! I still have the two old Harrison cores I cut out of two Cadillacs = out in a junk yard in the mid 1990 flying out front - still cooling just = fine. There is no doubt that the high fin density and the fact the fins = are louvered enhances its transfer of heat to the air. The thing that = always amazed me was the very small cross channels that transfer fluid = between the side tanks. Could not be much larger than 1/8 - 3/16 " dia = (if that much), yet seemed to have no problem flowing coolant through = them.=20 The fact that most are around 3+ inches thick which corresponds well = with the NASCAR racing standard radiator sized for our speeds, is a = fortuitous coincident. =20 Not to discount their price as well. Mine cost me between $5 and $25 = each out of the junk yard (depended who and which junk yard), it cost = another $25 - $50 to have bungs welded on them, so I have around $75 max = in each. Not too bad. Ed ----- Original Message -----=20 From: Lehanover@aol.com=20 To: Rotary motors in aircraft=20 Sent: Thursday, November 15, 2007 1:33 PM Subject: [FlyRotary] Harrison cores The Harrison built (same as Corvette radiator) used in air = conditioning in full sized GM cars are designed to flow a major amount = of air. They are cheap even when bought new. They transfer heat as good = as anything you can find. They are compact. Two of them can dump the = heat from most any rotary installation. Two of them for coolant and one = for oil has been proven in a number of installations. If you want less cooling drag build the radiators into the wing skins = like a Supermarine racer.=20 I raced for years with one Harrison core for oil cooling in front of = the water radiator. A poor installation with heated air going through = the water radiator, but it worked just fine.=20 Lynn E. Hanover -------------------------------------------------------------------------= ----- See what's new at AOL.com and Make AOL Your Homepage. ------=_NextPart_000_0065_01C82790.1C7431D0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Yep!  I still have the two old Harrison cores I = cut out=20 of two Cadillacs out in a junk yard in the mid 1990 flying out front - = still=20 cooling just fine.  There is no doubt that the high fin density and = the=20 fact the fins are louvered enhances its transfer of heat to the = air.  The=20 thing that always amazed me was the very small cross channels that = transfer=20 fluid between the side tanks.  Could not be much larger than = 1/8 -=20 3/16 " dia (if that much), yet seemed to have no problem flowing coolant = through=20 them. 
 
The fact that most are around 3+ inches thick which=20 corresponds well with the NASCAR racing standard radiator sized for our = speeds,=20  is  a fortuitous coincident. 
 
Not to discount their price as well.  Mine cost = me=20 between $5 and $25 each out of the junk yard (depended who and which = junk yard),=20 it cost another $25 - $50 to have bungs welded on them, so I have around = $75 max=20 in each.  Not too bad.
 
Ed
----- Original Message -----
From:=20 Lehanover@aol.com
Sent: Thursday, November 15, = 2007 1:33=20 PM
Subject: [FlyRotary] Harrison = cores

The Harrison built (same as Corvette radiator) used in air = conditioning=20 in full sized GM cars are designed to flow a major amount of air. They = are=20 cheap even when bought new. They transfer heat as good as anything you = can=20 find. They are compact. Two of them can dump the heat from most any = rotary=20 installation. Two of them for coolant and one for oil has been proven = in a=20 number of installations.
 
If you want less cooling drag build the radiators into the wing = skins=20 like a Supermarine racer.
 
I raced for years with one Harrison core for oil cooling in front = of the=20 water radiator. A poor installation with heated air going through the = water=20 radiator, but it worked just fine.
 
Lynn E. Hanover



See what's new at AOL.com=20 and Make AOL Your=20 Homepage.
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