Return-Path: Sender: (Marvin Kaye) To: lml Date: Mon, 03 Mar 2003 23:19:38 -0500 Message-ID: X-Original-Return-Path: Received: from mailrelay.udlp.com ([207.109.1.10] verified) by logan.com (CommuniGate Pro SMTP 4.0.6) with ESMTP id 2042932 for lml@lancaironline.net; Mon, 03 Mar 2003 23:17:10 -0500 Received: from asdmngwia.mpls.udlp.com (asdmngwia.mpls.udlp.com [10.1.62.22]) by mailrelay.udlp.com (8.12.8/8.12.8) with ESMTP id h244H7ri001935 for ; Mon, 3 Mar 2003 22:17:08 -0600 Received: from DM-MN-06-MTA by asdmngwia.mpls.udlp.com with Novell_GroupWise; Mon, 03 Mar 2003 22:17:05 -0600 X-Original-Message-Id: X-Mailer: Novell GroupWise Internet Agent 6.0.1 X-Original-Date: Mon, 03 Mar 2003 22:16:48 -0600 From: "Christopher Zavatson" X-Original-To: Subject: Re: [LML] Fuel probes Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Disposition: inline X-Spam-Status: No, hits=0.8 required=7.0 tests=SPAM_PHRASE_00_01 version=2.42 Jeff, I must second Ian's opinion. I currently have long probes for the "inboard" part of the tank and short probes coming in from the tips for the "outboard" portion of the tank. I use two fuel gauges on the panel. The inboard probes start reading sooner than I was expecting in terms of time since top off. Originally I was thinking the way you are now, wanting to see needle movement right from the start. Now, if I ever have need for panel space for a new toy, the outboard fuel gauge is out of there. Chris Zavatson >>> ian.crowe@sympatico.ca 03/03/03 06:45PM >>> I too have the extended tanks but my Skysport probes only go out to the original tank bulkhead. This is the bulkhead that houses the aileron bell crank. My experience has been that the tank gauge starts to read quite quickly. You only have 5 gallons in the extension for a total capacity of just under 21 usg per side and the dihedral angle which causes the fuel at the tip to be higher than the inboard end is not so high that it creates a large dead spot in the gauge reading. If you are a purist you have to fit the extended probes but it will not significantly improve the accuracy of the gauges. I had gauge wiring problems and I wanted to recalibrate the gauges. I filled one tank up to the filler and set the full trimmer, I then pumped this tank into the empty tank after setting the low trimmer. What was interesting was that the when one read 3/4full the other read 1/4 full and this worked at 1/2 and 3/4 going the other way. I concluded fom this that the system was linear. Incidentally I then set the full probe on the tank I had just filled and the empty trimmer on the tank I had just emptied and refilled it. Again the two gauges worked exactly in step. Up to you of course but for my money I would not bother to spend money needlessly. Ian Crowe