X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 31 Mar 2014 07:36:50 -0400 Message-ID: X-Original-Return-Path: Received: from mail-pb0-f53.google.com ([209.85.160.53] verified) by logan.com (CommuniGate Pro SMTP 6.0.9e) with ESMTPS id 6807165 for lml@lancaironline.net; Mon, 31 Mar 2014 07:26:32 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.160.53; envelope-from=frederickemoreno@gmail.com Received: by mail-pb0-f53.google.com with SMTP id rp16so7985800pbb.26 for ; Mon, 31 Mar 2014 04:25:55 -0700 (PDT) X-Received: by 10.66.193.202 with SMTP id hq10mr24290595pac.57.1396265155450; Mon, 31 Mar 2014 04:25:55 -0700 (PDT) X-Original-Return-Path: Received: from User-PC (CPE-124-178-172-69.lns3.wel.bigpond.net.au. [124.178.172.69]) by mx.google.com with ESMTPSA id ha2sm42812487pbb.8.2014.03.31.04.25.53 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 31 Mar 2014 04:25:54 -0700 (PDT) MIME-Version: 1.0 X-Original-Message-Id: <533950BB.00007D.23676@USER-PC> X-Original-Date: Mon, 31 Mar 2014 19:25:48 +0800 Content-Type: Multipart/Alternative; charset="iso-8859-1"; boundary="------------Boundary-00=_Z2TAI4D8WCW000000000" X-Mailer: IncrediMail (6605288) From: "frederickemoreno@gmail.com" X-FID: FLAVOR00-NONE-0000-0000-000000000000 X-Priority: 3 X-Original-To: "Lancair Mail (lml@lancaironline.net)" Subject: EGT probes --------------Boundary-00=_Z2TAI4D8WCW000000000 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable The absolute value of the EGT readings is not important because the thermocouple is averaging out heating from the hot gasses for one third o= f the time when the exhaust valve is open, and cooling by radiation to exha= ust pipe and exhaust port walls as well as cooling down the shaft of the thermocouple sheath to the outside world where the cooling air blast is blowing by. What is needed is for locations and depths of EGT probes to = be as alike with one another as possible. Whatever the others have for installation should be mimicked. =0D =0D See latest Savvy Aviator newsletter for more on EGT probes and measuremen= ts. Good article there by Mike Busch. =0D =0D Fred Moreno --------------Boundary-00=_Z2TAI4D8WCW000000000 Content-Type: Text/HTML; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

The absolute value of the EGT readings is not important because the = thermocouple is averaging out heating from the hot gasses for one third o= f the time when the exhaust valve is open, and cooling by radiation to&nb= sp;exhaust pipe and exhaust port walls as well as cooling down the shaft = of the thermocouple sheath to the outside world where the cooling air bla= st is blowing by. What is needed is for locations and depths of EGT= probes to be as alike with one another as possible. Whatever the o= thers have for installation should be mimicked.

See latest Savvy Aviator newsletter for more on EGT probes and measu= rements. Good article there by Mike Busch.

Fred Moreno

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