X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail01.syd.optusnet.com.au ([211.29.132.182] verified) by logan.com (CommuniGate Pro SMTP 5.1.12) with ESMTPS id 2325920 for flyrotary@lancaironline.net; Wed, 12 Sep 2007 02:17:56 -0400 Received-SPF: none receiver=logan.com; client-ip=211.29.132.182; envelope-from=lendich@optusnet.com.au Received: from george (d58-104-134-83.dsl.nsw.optusnet.com.au [58.104.134.83]) by mail01.syd.optusnet.com.au (8.13.1/8.13.1) with SMTP id l8C6H9Gf013845 for ; Wed, 12 Sep 2007 16:17:11 +1000 Message-ID: <000f01c7f504$8e169f30$5386683a@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] How cool is too cool? Date: Wed, 12 Sep 2007 16:17:09 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000C_01C7F558.5EC38EB0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Antivirus: avast! (VPS 0657-0, 12/12/2006), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_000C_01C7F558.5EC38EB0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable David, My notes say that anything over 160F for oil and 180F for water reduces = HP - seems your right on the button! Water - red line 220F Oil - red line 210F George ( down under) I have have about 5 hours on the plane since the latest updates and I = find that even using moderate levels of boost in climb, Coolant temps = peak at 80C (176F) in a prolonged climb and cool to 60-70C (140-160F) in = cruise even at 180KTAS. Oil runs only slightly warmer in prolonged = steep climb as high as 94C(200F) but it also quickly cools to the 60-70C = range in cruise.=20 Besides unnecessary drag, is there any problem with with continuous = temps that low? Someone wrote that oil temps in particular should not = be that low and will tend to cause sludge. My oil temps have always = been that low, and I wonder if that may have contributed to my stuck = side seals x2. I use mobile-1.=20 --=20 David Leonard Turbo Rotary RV-6 N4VY http://N4VY.RotaryRoster.net http://RotaryRoster.net=20 -------------------------------------------------------------------------= ----- No virus found in this incoming message. Checked by AVG Free Edition.=20 Version: 7.5.485 / Virus Database: 269.13.15/1002 - Release Date: = 11/09/2007 5:46 PM ------=_NextPart_000_000C_01C7F558.5EC38EB0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
David,
My notes say that anything over 160F = for oil and=20 180F for water reduces HP - seems your right on the button!
Water - red line 220F
Oil - red line 210F
George ( down under)
I=20 have have about 5 hours on the plane since the latest updates and I = find that=20 even using moderate levels of boost in climb, Coolant temps peak at = 80C (176F)=20 in a prolonged climb and cool to 60-70C (140-160F) in cruise even at=20 180KTAS.  Oil runs only slightly warmer in prolonged steep climb = as high=20 as 94C(200F) but it also quickly cools to the 60-70C range in cruise.=20

Besides unnecessary drag, is there any problem with with = continuous=20 temps that low?  Someone wrote that oil temps in particular = should not be=20 that low and will tend to cause sludge.  My oil temps have always = been=20 that low, and I wonder if that may have contributed to my stuck side = seals=20 x2.  I use mobile-1.

--
David = Leonard

Turbo=20 Rotary RV-6 N4VY
http://N4VY.RotaryRoster.nethttp://RotaryRoster.net=20

No virus found in this incoming message.
Checked by AVG Free = Edition.
Version: 7.5.485 / Virus Database: 269.13.15/1002 - = Release Date:=20 11/09/2007 5:46 PM
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