X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cartier.micfo.com ([67.15.58.72] verified) by logan.com (CommuniGate Pro SMTP 5.0c6) with ESMTPS id 782608 for flyrotary@lancaironline.net; Mon, 24 Oct 2005 22:09:21 -0400 Received-SPF: pass receiver=logan.com; client-ip=67.15.58.72; envelope-from=bob@bob-white.com Received: from bgp01386375bgs.brodwy01.nm.comcast.net ([68.35.160.229]:35546 helo=quail) by cartier.micfo.com with smtp (Exim 4.52) id 1EUEEl-00050I-Bx for flyrotary@lancaironline.net; Mon, 24 Oct 2005 21:08:27 -0500 Date: Mon, 24 Oct 2005 20:08:28 -0600 From: Bob White To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Thermocouple Question Message-Id: <20051024200828.4d4fb28a.bob@bob-white.com> In-Reply-To: References: X-Mailer: Sylpheed version 2.1.4 (GTK+ 2.4.9; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-PopBeforeSMTPSenders: bobw2,nmrv,rlwhite,sales@roblinphoto.com,webmaster@bearnutupholstery.com X-Antivirus-Scanner: Clean mail though you should still use an Antivirus X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - cartier.micfo.com X-AntiAbuse: Original Domain - lancaironline.net X-AntiAbuse: Originator/Caller UID/GID - [0 0] / [47 12] X-AntiAbuse: Sender Address Domain - bob-white.com X-Source: X-Source-Args: X-Source-Dir: Hi Doug, I bought the P-110 EGT probes from Aircraft Spruce. These have 1/4 tab connectors about 1 foot from the probe. The Micro-1000 probes are about 1/2 the price of the P-110s. For some reason I didn't find them back when I ordered. I plan on using faston connectors crimped to type K thermocouple lead all the way from there to my EM-2 which will have crimp on pins for D connector. Each discontinuity will introduce some error, but it will be small compared to the EGT you are measuring. Any EGT probe should work OK. Mine are located about 1.5 inches from the exhaust port. I should be able to report on their survivability in another month or two. Bob W. On Mon, 24 Oct 2005 21:28:29 EDT DLOMHEIM@aol.com wrote: > Is there any particular brand of thermocouple that you all would recommend > that seems to hold up well under the stresses of the rotary exhaust system? > There are so many types and to choose from that I'd rather attempt to get one > that will last for a while prior to failure. Also from what I've read it > seems to be best to run continuous wires right from the thermocouple and through > the firewall to the gauge (EM2 in my case)...is that what most of you have > found to work the best, or can the leads be run through a 24 pin connector (or > similar device) at the firewall and then onto the engine monitor? Thanks > for any input... > > I really thought this would be the year that I'd finally make Tracy's get > together but job constraints have conspired against me again! To all heading > down there have a fun and safe time! > > Doug > RV-9A, 13B, EC2/EM2 > OK City, OK > -- http://www.bob-white.com N93BD - Rotary Powered BD-4 (projected engine start in November) Custom Cables for your rotary installation - http://www.roblinphoto.com/shop/