X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [66.219.56.245] (HELO mail.qnsi.net) by logan.com (CommuniGate Pro SMTP 5.4.6) with ESMTP id 5621708 for flyrotary@lancaironline.net; Fri, 22 Jun 2012 19:24:23 -0400 Received-SPF: none receiver=logan.com; client-ip=66.219.56.245; envelope-from=bhughes@qnsi.net Received: from 10.0.0.5 ([10.0.0.5]) by qnsi-mail.qnsi.net ([10.0.0.5]) with Microsoft Exchange Server HTTP-DAV ; Fri, 22 Jun 2012 23:23:48 +0000 Subject: Re: [FlyRotary] EGT problem found! References: From: "Bobby J. Hughes" Content-Type: text/plain; charset="us-ascii" In-Reply-To: Message-ID: Date: Fri, 22 Jun 2012 18:23:47 -0500 To: "Rotary motors in aircraft" thread-topic: [FlyRotary] EGT problem found! Content-Transfer-Encoding: quoted-printable thread-index: Ac1QzhMzp1U9M2q+S+SFSK5ecu9mag== MIME-Version: 1.0 (1.0) Bill The lug connection between my probes and wire are staggered and individually= covered with a thick wall heat shrink. =20 Bobby=20 Sent from my iPad On Jun 22, 2012, at 2:55 PM, "Bill Bradburry" wro= te: > Tracy and others, >=20 > I had a problem with the #2 EGT going erratically up to over 2K. I couldn= 't > find anything wrong with the probe, so I sent the EM-2 to Tracy for > evaluation. He didn't find anything wrong with the EM-2 so back to the > drawing board! >=20 > I got my hangar mate to come out and give me an assist. We discovered tha= t > if I moved the probe back and forth along the exhaust manifold, the output= > of the probe would change up to into the 40s milivolt. At first I thought= > that I was somehow getting voltage onto the exhaust manifold and it was > being picked up by the probe. >=20 > Turns out that the probe connects to the thermocouple wire with two ring > connectors and the edges of the ring connectors were cutting thru the > insulation of the adjacent wire causing a short. >=20 > Tracy has sent the EM-2 back and now I need to figure a way to connect the= > wires without causing a short and so that it doesn't cause an error in the= > output. >=20 > Anyone have a suggestion about how to do that?? >=20 > Bill B >=20 >=20 > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List= .html