X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 22 Apr 2006 17:17:14 -0400 Message-ID: X-Original-Return-Path: Received: from smtp111.sbc.mail.mud.yahoo.com ([68.142.198.210] verified) by logan.com (CommuniGate Pro SMTP 5.0.9) with SMTP id 1076788 for lml@lancaironline.net; Sat, 22 Apr 2006 13:56:20 -0400 Received-SPF: none receiver=logan.com; client-ip=68.142.198.210; envelope-from=elippse@sbcglobal.net Received: (qmail 69446 invoked from network); 22 Apr 2006 17:55:35 -0000 Received: from unknown (HELO Computerroom) (elippse@sbcglobal.net@71.148.2.210 with login) by smtp111.sbc.mail.mud.yahoo.com with SMTP; 22 Apr 2006 17:55:35 -0000 X-Original-Message-ID: <000501c66635$f7efb720$d2029447@Computerroom> From: "Paul Lipps" X-Original-To: Subject: CHTs X-Original-Date: Sat, 22 Apr 2006 10:55:38 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0002_01C665FB.4A457360" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2869 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2869 This is a multi-part message in MIME format. ------=_NextPart_000_0002_01C665FB.4A457360 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Lycoming Spec # 2283-G for the O-320-D series says "For maximum engine = life, the CHT should not exceed 475F above 75% power and 435F at 75% and = below." Kas Thomas, in AIRCRAFT ENGINE OPERATING GUIDE, says "Pilots of = so-called high performance aircraft are often squemish about leaving the = ""balls-to-the-wall"" for more than a minute or two after takeoff, when = actually there is no legitimate reason to be squemish at all (unless of = course CHT or oil temperature are approaching redline). In certification = testing, engines are required to spend many hours at full power, with = CHT and oil temperatures a specified amount above redline." (Emphasis = his). Also, " ...cylinders will generally last longer if maintained at = no more than 435 degrees." I have another source that mentions the range = in my posting, but I don't have it here. When I get it, I will post it. ------=_NextPart_000_0002_01C665FB.4A457360 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Lycoming Spec # 2283-G for the O-320-D series = says "For=20 maximum engine life, the CHT should not exceed 475F above 75% power and = 435F at=20 75% and below." Kas Thomas, in AIRCRAFT ENGINE OPERATING GUIDE, says = "Pilots of=20 so-called high performance aircraft are often squemish about leaving the = ""balls-to-the-wall"" for more than a minute or two after takeoff, = when=20 actually there is no legitimate reason to be squemish at all = (unless of=20 course CHT or oil temperature are approaching redline). In = certification=20 testing, engines are required to spend many hours at full power, with = CHT and=20 oil temperatures a specified amount above = redline."  (Emphasis=20 his). Also, " ...cylinders will generally last longer if = maintained at=20 no more than 435 degrees." I have another source that mentions the = range in=20 my posting, but I don't have it here. When I get it, I will post=20 it.
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