X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-qa0-f52.google.com ([209.85.216.52] verified) by logan.com (CommuniGate Pro SMTP 5.4.4) with ESMTPS id 5483508 for flyrotary@lancaironline.net; Mon, 16 Apr 2012 13:13:29 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.216.52; envelope-from=rwstracy@gmail.com Received: by qabg40 with SMTP id g40so3537897qab.4 for ; Mon, 16 Apr 2012 10:12:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=subject:references:from:content-type:in-reply-to:message-id:date:to :content-transfer-encoding:mime-version:x-mailer; bh=vNEr6EQmdl1DEJ0irKmVEGaq6hvPkoZJ2NwYHGNPgPY=; b=JzvXht1om/pyNHN/sUcGkPYk+g/zxph3XeLyjv0r23ysmPa1F9xUwPzTBVBKsUkaAx hjV6W9nypxMGZJwwXj/kYFFJFeg3t0vNkAYjBSwtRgoDglwiQphcwz4zIktI/LC7S7Mk uE8/a9zy3bVpNgrW/0pVfxJc7TigeJtGRrc/0fAsMpwlYMjbE7VHwr/nWQQARpCrDL6b yna8qPlt7mjHMqapCu9eeVOYckLkYm/OYdL8AbOss/mtkZj7Orn4zHj/VRAurGy3pZwG BxnagGDJWcikkZlI7L5+sAqhfDOuAwSK1za5lyIA0i5bytpFWKRR94ERhOfxv8JEcydQ Ykqg== Received: by 10.229.135.210 with SMTP id o18mr4917015qct.109.1334596374108; Mon, 16 Apr 2012 10:12:54 -0700 (PDT) Return-Path: Received: from [192.168.1.2] (215.sub-166-248-64.myvzw.com. [166.248.64.215]) by mx.google.com with ESMTPS id gy2sm35258086qab.10.2012.04.16.10.12.51 (version=TLSv1/SSLv3 cipher=OTHER); Mon, 16 Apr 2012 10:12:53 -0700 (PDT) Subject: Re: [FlyRotary] Re: Just basic questions here References: From: Tracy Content-Type: multipart/alternative; boundary=Apple-Mail-6--194038626 In-Reply-To: Message-Id: <33196DCE-BC6B-4348-AD19-04B989B99135@gmail.com> Date: Mon, 16 Apr 2012 10:54:26 -0600 To: Rotary motors in aircraft Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (iPad Mail 8F191) X-Mailer: iPad Mail (8F191) --Apple-Mail-6--194038626 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii My experience is similar to Ben's. I typically see 10 degrees or less on w= ater temp differential. 30 degrees probably too much unless in cold weathe= r AND you are using a thermostat that limits rad flow. Oil differential is a lot more. 40 - 50 degrees. Tracy Sent from my iPad On Apr 16, 2012, at 9:26 AM, Ben Haas wrote: > For a baseline. On my 300+ HP V-8 ,I average about 11-14 degree difference= between water out and water in temps... 30 degrees difference indicates you= are not flowing the coolant at a proper speed. The coolant is spending too m= uch time in the radiator, hence the big temp split.. My system holds 7 quart= s and I circulate it about every 5 seconds. Worst split was when it was hot o= utside and I saw 11 degrees. Best was 16 degrees and that was when it was -= 30f OAT. Most aluminum blocks / aluminum rads cooling systems are designed= to to run in the 12 degree delta range. My experimental has been running th= at way for over 400 hours. IMHO....... >=20 > Ben Haas > www.haaspowerair.com >=20 > =20 > RV6A, 1986 13B NA, RD1A, EC2 > =20 > =20 > From: Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf of= Randolph [randolph7714@comcast.net] > Sent: Sunday, April 15, 2012 7:36 PM > To: Rotary motors in aircraft > Subject: [FlyRotary] Just basic questions here >=20 > The water after radiator temp registered 30 degrees below the engine out= water.. is this enough? > =20 > Wishing you all had problems so basic as mine! > =20 > Randy >=20 >=20 > __________ Information from ESET NOD32 Antivirus, version of virus signatu= re database 7056 (20120415) __________ >=20 > The message was checked by ESET NOD32 Antivirus. >=20 > http://www.eset.com --Apple-Mail-6--194038626 Content-Transfer-Encoding: 7bit Content-Type: text/html; charset=utf-8
My experience is similar to Ben's.   I typically see 10 degrees or less on water temp differential.   30 degrees probably too much unless in cold weather AND you are using a thermostat that limits rad flow.

Oil differential is a lot more.   40 - 50 degrees.
Tracy

Sent from my iPad

On Apr 16, 2012, at 9:26 AM, Ben Haas <stol83001@live.com> wrote:

For a baseline. On my 300+ HP V-8 ,I average about 11-14 degree difference between water out and water in temps... 30 degrees difference indicates you are not flowing the coolant at a proper speed. The coolant is spending too much time in the radiator, hence the big temp split.. My system holds 7 quarts and I circulate it about every 5 seconds. Worst split was when it was hot outside and I saw 11 degrees.  Best was 16 degrees and that was when it was -30f OAT.  Most aluminum blocks / aluminum rads  cooling systems are designed to to run in the 12 degree delta range. My experimental has been running that way for over 400 hours. IMHO.......

Ben Haas
www.haaspowerair.com

 
RV6A, 1986 13B NA, RD1A, EC2
 
 
From: Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf of Randolph [randolph7714@comcast.net]
Sent: Sunday, April 15, 2012 7:36 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Just basic questions here

  The water after radiator temp registered 30 degrees below the engine out water.. is this enough?
 
Wishing you all had problems so basic as mine!
 
Randy


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The message was checked by ESET NOD32 Antivirus.

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