X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from vms046pub.verizon.net ([206.46.252.46] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTP id 2490103 for flyrotary@lancaironline.net; Thu, 15 Nov 2007 14:06:53 -0500 Received-SPF: pass receiver=logan.com; client-ip=206.46.252.46; envelope-from=expressben@verizon.net Received: from ben22d25bef6f7 ([71.173.9.193]) by vms046.mailsrvcs.net (Sun Java System Messaging Server 6.2-6.01 (built Apr 3 2006)) with ESMTPA id <0JRK001XOAE51I63@vms046.mailsrvcs.net> for flyrotary@lancaironline.net; Thu, 15 Nov 2007 13:06:06 -0600 (CST) Date: Thu, 15 Nov 2007 14:06:05 -0500 From: "Ben Baltrusaitis" Subject: Re: [FlyRotary] Re: Harrison cores To: "Rotary motors in aircraft" Message-id: <001c01c827ba$944e5120$2f01a8c0@ben22d25bef6f7> MIME-version: 1.0 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 X-Mailer: Microsoft Outlook Express 6.00.2900.3138 Content-type: multipart/alternative; boundary="----=_NextPart_000_0019_01C82790.A98D1AF0" X-Priority: 3 X-MSMail-priority: Normal X-Antivirus: avast! (VPS 071114-0, 11/14/2007), Outbound message X-Antivirus-Status: Clean References: This is a multi-part message in MIME format. ------=_NextPart_000_0019_01C82790.A98D1AF0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Tracy and Lynn, How much pressure are these cores good for? I plan to run dry sump with = at least 60 lbs. Thanks! Ben ----- Original Message -----=20 From: Tracy Crook=20 To: Rotary motors in aircraft=20 Sent: 11/15/2007 1:43 PM Subject: [FlyRotary] Re: Harrison cores I am absolutely amazed at how well the GM evap. core is cooling the = oil on my 20B installation. Cooling well at WOT on the ground! I would = have previously thought this was not possible with a thick heat = exchanger. It does have the best diffuser I've built to date on it and = has prop blast into it.=20 Tracy On Nov 15, 2007 1:33 PM, wrote: 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.=20 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 ------=_NextPart_000_0019_01C82790.A98D1AF0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Tracy and=20 Lynn,
How much = pressure are these=20 cores good for? I plan to run dry sump with at least 60 = lbs.
Thanks!
Ben
----- Original Message -----
From:=20 Tracy=20 Crook
Sent: 11/15/2007 1:43 PM
Subject: [FlyRotary] Re: = Harrison=20 cores

 
I am absolutely amazed at how well the GM evap. core is cooling = the oil=20 on my 20B installation.  Cooling well at WOT on the ground!  = I would=20 have previously thought this was not possible with a thick heat=20 exchanger.  It does have the best diffuser I've built to date on = it and=20 has prop blast into it.
 
Tracy

On Nov 15, 2007 1:33 PM, <Lehanover@aol.com> wrote:
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=20 the water radiator. A poor installation with heated air going = through the=20 water radiator, but it worked just fine.
 
Lynn E.=20 Hanover
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