Return-Path: Sender: (Marvin Kaye) To: lml Date: Mon, 03 Mar 2003 21:45:13 -0500 Message-ID: X-Original-Return-Path: Received: from tomts8-srv.bellnexxia.net ([209.226.175.52] verified) by logan.com (CommuniGate Pro SMTP 4.0.6) with ESMTP id 2042801 for lml@lancaironline.net; Mon, 03 Mar 2003 20:49:01 -0500 Received: from a ([67.69.55.202]) by tomts8-srv.bellnexxia.net (InterMail vM.5.01.04.19 201-253-122-122-119-20020516) with SMTP id <20030304005826.RPMS194.tomts8-srv.bellnexxia.net@a> for ; Mon, 3 Mar 2003 19:58:26 -0500 X-Original-Message-ID: <03bb01c2e1ea$2f369ba0$0c384543@a> From: "Ian B. Crowe" X-Original-To: "Lancair Mailing List" Subject: Fuel probes X-Original-Date: Mon, 3 Mar 2003 20:05:44 -0500 Organization: Corvi Trade Consultants Inc MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_03B8_01C2E1C0.461D7020" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 This is a multi-part message in MIME format. ------=_NextPart_000_03B8_01C2E1C0.461D7020 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable 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 ------=_NextPart_000_03B8_01C2E1C0.461D7020 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable

I too have the extended tanks but my Skysport = probes=20 only go out to the original tank bulkhead. This is the = bulkhead that=20 houses the aileron bell crank.

My experience has been that the tank gauge starts to = read=20 quite quickly. You only have 5 gallons in the extension for a = total=20 capacity of just under 21 usg per side and the dihedral angle which = causes the=20 fuel at the tip to be higher than the inboard end is not so high that it = creates=20 a large dead spot in the gauge reading.

If you are a purist you have to fit the extended = probes but it=20 will not significantly improve the accuracy of the gauges. I had = gauge=20 wiring problems and I wanted to recalibrate the gauges. I filled = one tank=20 up to the filler and set the full trimmer, I then pumped this tank into=20 the empty tank after setting the low trimmer. What was = interesting=20 was that the when one read 3/4full the other read 1/4 full and this = worked at=20 1/2 and 3/4 going the other way. I concluded fom this that the = system was=20 linear. Incidentally I then set the full probe on the tank I had = just=20 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=20 spend money needlessly.

Ian Crowe

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