X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fk-out-0910.google.com ([209.85.128.184] verified) by logan.com (CommuniGate Pro SMTP 5.1.12) with ESMTP id 2325579 for flyrotary@lancaironline.net; Tue, 11 Sep 2007 21:13:48 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.128.184; envelope-from=wdleonard@gmail.com Received: by fk-out-0910.google.com with SMTP id b27so43090fka for ; Tue, 11 Sep 2007 18:13:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:mime-version:content-type; bh=qJ15tdoc71eOYlhGyCYUgqUJwmICosN8iA4Z8tmAfTk=; b=g1+HOfWiuJBBeYLzdVXrgjycJTJ466AjBP0iOUhQYw7TQEz/llpZ0IUfPy66lDCOkAqWVshRIVh5/ZQHFZPdRgy0VfmP1k6gBzUzwZAFKz276nIn/ttZEmlpVU3wx/NMX0t4zDUETNKEJPXmYiABsXk+aOD3zpqt8SdxhoTDefU= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:mime-version:content-type; b=Zf32ilz9+OXbBO8sVh0U6hInrIdneArV3Xn2aORuxt9eMnWsBOhm6Aw5ZyMBLSkBV12rmN997krlmcBQG1xqe85Hdl+djkptrih7yj+lfr65aJFb7XXLkZRfG9QfW8nXJoLidvmkNyqIyYShDw82sk1H4w3TiRxQYxv7Ny46E8o= Received: by 10.82.107.15 with SMTP id f15mr377591buc.1189559589888; Tue, 11 Sep 2007 18:13:09 -0700 (PDT) Received: by 10.82.122.16 with HTTP; Tue, 11 Sep 2007 18:13:09 -0700 (PDT) Message-ID: <1c23473f0709111813s7fbd8fd6u22b9d5559766cfd5@mail.gmail.com> Date: Tue, 11 Sep 2007 18:13:09 -0700 From: "David Leonard" To: "Rotary motors in aircraft" Subject: How cool is too cool? MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_17263_12956693.1189559589884" ------=_Part_17263_12956693.1189559589884 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline 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. 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. -- David Leonard Turbo Rotary RV-6 N4VY http://N4VY.RotaryRoster.net http://RotaryRoster.net ------=_Part_17263_12956693.1189559589884 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline 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.

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.

--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net ------=_Part_17263_12956693.1189559589884--