Return-Path: Received: from fed1rmmtao10.cox.net ([68.230.241.29] verified) by logan.com (CommuniGate Pro SMTP 4.2.8) with ESMTP id 612485 for flyrotary@lancaironline.net; Tue, 18 Jan 2005 21:09:32 -0500 Received-SPF: none receiver=logan.com; client-ip=68.230.241.29; envelope-from=ALVentures@cox.net Received: from BigAl ([68.7.14.39]) by fed1rmmtao10.cox.net (InterMail vM.6.01.04.00 201-2131-117-20041022) with ESMTP id <20050119020901.RZDZ7026.fed1rmmtao10.cox.net@BigAl> for ; Tue, 18 Jan 2005 21:09:01 -0500 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Switching to Evans NPG+ Date: Tue, 18 Jan 2005 18:09:17 -0800 Message-ID: <000001c4fdcb$e16b4ab0$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C4FD88.D3480AB0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C4FD88.D3480AB0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable To: Rotary motors in aircraft Subject: [FlyRotary] Re: Switching to Evans NPG+ =20 Al, that is good input. First of all, I am not doing this to solve a problem with the cooling system. I agree that it is not going to = improve anything in that regard =20 Dave; sorry, I misunderstood. I thought one of the concerns was that = you did not get sufficient cooling with 50/50 w/g, and that you were = concerned about the potential freezing of pure water. =20 Add in that it is much more resistant to micro boiling, and it is = reasonable that NPG may do a better job of keeping the very hottest parts cool. =20 Nucleate boiling dramatically increases heat transfer. It is when you = get into film boiling that things get bad in a hurry. =20 I'm sure you'll let us know how it works out. =20 Best, =20 Al =20 ------=_NextPart_000_0001_01C4FD88.D3480AB0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Switching to Evans NPG+

 

Al, that is good input.  First of all, I am not doing this to solve a = problem with the cooling system.  I agree that it is not going to improve = anything in that regard

 

Dave; sorry, I misunderstood.  I thought one = of the concerns was that you did not get sufficient cooling with 50/50 w/g, and that you = were concerned about the potential freezing of pure water.

 

Add in that it is much more resistant to micro boiling, and it is reasonable = that NPG may do a better job of keeping the very hottest parts = cool.

 

Nucleate = boiling dramatically increases heat transfer.  It is when you get into film = boiling that things get bad in a hurry.

 <= /font>

I’m = sure you’ll let us know how it works out.

 <= /font>

Best,

 <= /font>

Al =  

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