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 5.2.16) with ESMTP id 3906732 for flyrotary@lancaironline.net; Fri, 30 Oct 2009 23:40:28 -0400 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 (sv1-1.per.aanet.com.au [203.24.100.68]) by poplet2.per.eftel.com (Postfix) with ESMTP id 81E391736DC for ; Sat, 31 Oct 2009 11:39:53 +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 C13FCBEC005 for ; Sat, 31 Oct 2009 11:39:51 +0800 (WST) Message-ID: <2D608787C1F84647982CD3E936ECF6DC@ownerf1fc517b8> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Cooling report Date: Sat, 31 Oct 2009 13:39:53 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_002B_01CA5A2F.A047C020" 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 091030-0, 10/30/2009), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_002B_01CA5A2F.A047C020 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Bill, I don't believe they freewheel in the car. George (down under) The fan doesn't run all the time in the car.does it freewheel and/or = do the bearings give out? =20 Bill B=20 =20 -------------------------------------------------------------------------= ----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] = On Behalf Of George Lendich Sent: Friday, October 30, 2009 4:22 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Cooling report=20 Thanks Al, That's good info. If I remember right the argument was the fan blade being close to the = rad, would restrict flow when not in use, and to allow the blade to = freewheel would kill the fan bearings. =20 It's obvious that a fan on the ground is quite an advantage. =20 I always felt that a fan that could swing away, out of the air flow, = would be ideal. However having the room to do that would be problematic. George ( down under) =20 Al,=20 I believe Rino said he had a fan on the oil cooler, which I feel = would be restrictive in aviation use, from what I've heard. Might be = good for taxiing etc. George ( down under) =20 George; =20 I added a fan behind the coolant radiator; and found it had no = detrimental effect in flight, and made a big improvement in cooling on = the ground. This is on a pusher (Velocity) with a ram scoop. I expect = it could make a difference depending on what type of fan and the = effectiveness of the intake scoop. =20 Al G =20 =20 =20 ------=_NextPart_000_002B_01CA5A2F.A047C020 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Bill,
I don't believe they freewheel in the=20 car.
George (down under)

The fan doesn=92t run all the time in the = car=85does it=20 freewheel and/or do the bearings give = out?

 

Bill = B 

 

From:=20 Rotary motors in aircraft = [mailto:flyrotary@lancaironline.net] On=20 Behalf Of George Lendich
Sent: Friday, October 30, 2009 = 4:22=20 PM
To: = Rotary motors in aircraft
Subject: [FlyRotary] Re: = Cooling report=20

 Thanks=20 Al,

That's good=20 info.

If I remember right the = argument=20 was the fan blade being close to the rad, would restrict = flow when not in=20 use, and to allow the blade to freewheel would kill the fan=20 bearings.

 

It's obvious that a fan = on the=20 ground is quite an advantage.

 

I always felt that a fan = that=20 could swing away, out of the air flow, would be ideal. However having = the room=20 to do that would be problematic.

George ( down=20 under)

 

 Al,=20

I = believe Rino=20 said he had a fan on the oil cooler, which I feel would be = restrictive in=20 aviation use, from what I've heard. Might be good for taxiing=20 etc.

George ( down=20 under)

 

George;

 

I = added a fan=20 behind the coolant radiator; and found it had no detrimental = effect in=20 flight, and made a big improvement in cooling on the ground. =  This is=20 on a pusher (Velocity) with a ram scoop.  I expect it could = make a=20 difference depending on what type of fan and the effectiveness of = the=20 intake scoop.

 

Al=20 G

 

 

 

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