X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from poplet2.per.eftel.com ([203.24.100.45] verified) by logan.com (CommuniGate Pro SMTP 5.3c3) with ESMTP id 4028266 for flyrotary@lancaironline.net; Fri, 18 Dec 2009 16:10:49 -0500 Received-SPF: none receiver=logan.com; client-ip=203.24.100.45; envelope-from=lendich@aanet.com.au Received: from sv1-1.aanet.com.au (mail.aanet.com.au [203.24.100.34]) by poplet2.per.eftel.com (Postfix) with ESMTP id 6AE29173961 for ; Sat, 19 Dec 2009 05:10:12 +0800 (WST) Received: from ownerf1fc517b8 (203.171.92.134.static.rev.aanet.com.au [203.171.92.134]) by sv1-1.aanet.com.au (Postfix) with SMTP id 10D64BEC001 for ; Sat, 19 Dec 2009 05:10:09 +0800 (WST) Message-ID: <3BCE2B789FA5453EA130B536D82D32BB@ownerf1fc517b8> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Radiator/Oil Cooler Combo Date: Sat, 19 Dec 2009 07:10:13 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0025_01CA807A.4F07B0F0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5843 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 X-Antivirus: avast! (VPS 091218-0, 12/18/2009), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0025_01CA807A.4F07B0F0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Ed, I saw a very early oil cooler and what it consisted of was an aluminium = sleeve with fins that went over the oil filter. Although it may not have = been too efficient, I figured I would remember that for a system that = was just a little short on cooling. By itself it may be very = inefficient by as a back up it is an elegant and very simple solution. = fresh air directed it would help immensely. George ( down under)=20 On one early year Mazda rotary installation, they had a similar = arrangement. They had a small heat exchanger that went between oil = filter and the block. It apparently did not prove satisfactory in that = application and soon disappeared. =20 If you use the Rx-7 Oil cooler, it has a thermostat which should keep = the oil temp near optimum. When the OAT cools the thermostat starts to = open and diverts oil around the cooler core thereby maintain its heat = at/near some target temperature. =20 Ed =20 Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://www.andersonee.com http://www.dmack.net/mazda/index.html http://www.flyrotary.com/ http://members.cox.net/rogersda/rotary/configs.htm#N494BW http://www.rotaryaviation.com/Rotorhead%20Truth.htm -------------------------------------------------------------------------= ----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] = On Behalf Of Thomas Mann Sent: Friday, December 18, 2009 11:03 AM To: Rotary motors in aircraft Subject: [FlyRotary] Radiator/Oil Cooler Combo=20 =20 I was watching a video that was created by Tim England regarding his = 4.3 V6 install in a velocity. =20 In his install he was running some sort of oil cooler that was a = combination oil filter mount with a heat exchanger working off of the = coolant from the radiator (or something to that effect.) His argument = for this approach centered around his belief that under extremely cold = temps at altitude, an oil cooler that is inside the radiator may make = the oil too cold to run at peak efficiency. i.e. keeping the oil at = around 195F was a better option under all temperature conditions. =20 So now I have these questions: =20 Does this philosophy translate to Rotary powered aircraft? Is the oil cooler/radiator a good solution?=20 If it is, do I need to use a different inch^3 figure per HP to derive = the correct radiator size? If the 195F oil solution seems viable, does anyone know of an oil = filter mount that includes a heat exchanger? =20 T Mann __________ Information from ESET NOD32 Antivirus, version of virus = signature database 3267 (20080714) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com ------=_NextPart_000_0025_01CA807A.4F07B0F0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 Ed,
 I saw a very early oil cooler and = what it=20 consisted of was an aluminium sleeve with fins that went over the oil = filter.=20 Although it may not have been too efficient, I figured I would remember = that for=20 a system that was just a little short on cooling.  By itself it may = be very=20 inefficient by as a back up it is an elegant and very simple solution. = fresh air=20 directed it would help immensely.
George ( down under) 

On one = early year=20 Mazda rotary installation, they had a similar arrangement.  They = had a=20 small heat exchanger that went between oil filter and the block.  = It=20 apparently did not prove satisfactory in that application and soon=20 disappeared.

 

If you use = the Rx-7=20 Oil cooler, it has a thermostat which should keep the oil temp near = optimum.=20 When the OAT cools the thermostat starts to open and diverts oil = around the=20 cooler core thereby maintain its heat at/near some target=20 temperature.

 

Ed

 

Ed=20 Anderson

Rv-6A = N494BW Rotary=20 Powered

Matthews,=20 NC

eanderson@carolina.rr.com

http://www.andersonee.com

http://www.dmack.net/mazda/index.html

http://www.flyrotary.com/

http://members.cox.net/rogersda/rotary/configs.htm#N494BW

http://www.r= otaryaviation.com/Rotorhead%20Truth.htm

From:=20 Rotary motors in aircraft = [mailto:flyrotary@lancaironline.net] On=20 Behalf Of Thomas Mann
Sent: Friday, December 18, 2009 = 11:03=20 AM
To: = Rotary motors in aircraft
Subject: [FlyRotary] = Radiator/Oil Cooler=20 Combo

 

I was = watching a=20 video that was created by Tim England regarding his 4.3 V6 =  install in a=20 velocity.

 

In his = install=20 he was running some sort of oil cooler that was a combination oil = filter mount=20 with a heat exchanger working off of the coolant from the radiator (or = something to that effect.) His argument for this approach centered = around his=20 belief that under extremely cold temps at altitude, an oil cooler that = is=20 inside the radiator may make the oil too cold to run at peak = efficiency. i.e.=20 keeping the oil at around 195F was a better option under all = temperature=20 conditions.

 

So now = I have=20 these questions:

 

Does this philosophy = translate to=20 Rotary powered aircraft?

Is the = oil=20 cooler/radiator a good solution?

If it = is, do I=20 need to use a different inch^3 figure per HP to derive the correct = radiator=20 size?

If the = 195F oil=20 solution seems viable, does anyone know of an oil filter mount that = includes a=20 heat exchanger?

 

T=20 Mann



__________ Information from ESET = NOD32=20 Antivirus, version of virus signature database 3267 (20080714)=20 __________

The message was checked by ESET NOD32 = Antivirus.

http://www.eset.com

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