Return-Path: Sender: "Marvin Kaye" To: lml@lancaironline.net Date: Mon, 04 Apr 2005 10:03:13 -0400 Message-ID: X-Original-Return-Path: Received: from imo-m28.mx.aol.com ([64.12.137.9] verified) by logan.com (CommuniGate Pro SMTP 4.3c3) with ESMTP id 854106 for lml@lancaironline.net; Mon, 04 Apr 2005 09:51:50 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.9; envelope-from=MikeEasley@aol.com Received: from MikeEasley@aol.com by imo-m28.mx.aol.com (mail_out_v37_r5.33.) id q.143.429e9064 (16633) for ; Mon, 4 Apr 2005 09:50:52 -0400 (EDT) From: MikeEasley@aol.com X-Original-Message-ID: <143.429e9064.2f82a03c@aol.com> X-Original-Date: Mon, 4 Apr 2005 09:50:52 EDT Subject: CHT Measurement X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1112622652" X-Mailer: 9.0 Security Edition for Windows sub 5000 -------------------------------1112622652 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Engine Guys, I know the engine doesn't cool very evenly when on the ground. And we only measure CHT at one spot on the bottom of the cylinder. Is it possible that some areas of our cylinders are getting much warmer, or staying much cooler than the probe is reading? I'm assuming that, in flight, that the cylinder temp is more even in all areas due to the increased air flow. Could baffling (good or bad) send a high amount of air to where the probe is, not necessarily cooling the entire cylinder, and make your number look good on your monitor, but really be cooking your cylinder? Mike Easley Listening and Wondering -------------------------------1112622652 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Engine Guys,

I know the engine doesn't cool very evenly when on the ground.&nbs= p;=20 And we only measure CHT at one spot on the bottom of the cylinder. Is=20= it=20 possible that some areas of our cylinders are getting much warmer, or stayin= g=20 much cooler than the probe is reading? I'm assuming that, in flight, t= hat=20 the cylinder temp is more even in all areas due to the increased air flow.&n= bsp;=20 Could baffling (good or bad) send a high amount of air to where the probe is= ,=20 not necessarily cooling the entire cylinder, and make your number look good=20= on=20 your monitor, but really be cooking your cylinder?

Mike Easley

Listening and Wondering

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