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<div>Thinking out loud - I don't have a variable DC voltage device. If I were to plug a DC output transformer (wall-wart, have plenty of those) into an AC variac (have) I should be able to dial in a desired DC output voltage - yes? </div>
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<div> <font size="3">This will not work. The wall-warts (plug-in DC power supplies) are voltage regulated and will put out a constant voltage over a range of input voltage. Once you drop below a minimum it will just shut off.</font></div>
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<div><font size="3">If you can find 100 ohm variable resistor you can simulate the tank sending unit and test the gauge that way using a plug-in power supply.</font></div>
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<div><font size="3">It occurred to me recently that you could swap the fuel and temp gauges but I see you are way ahead of me. Following up you can connect the fuel gauge to the temp sender and take a test drive and see if the fuel gauge reads in a manner similar to what you would expect from the temp gauge.<br>
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<div><font size="4">Dave <br>
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<div style="font-family:arial,helvetica;font-size:10pt;color:black"><font size="2">-----Original Message-----<br>
From: aribert neumann <aribertn@gmail.com><br>
To: triumphs@autox.team.net<br>
Sent: Wed, Oct 12, 2022 10:05 pm<br>
Subject: [TR] Thanks & follow-up - Spit bodied GT6 fuel gage issues<br>
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<div dir="ltr">First thanks to Dave & Dave for the guess and confirmation that 67 ohm is in the ball park for the sending unit.
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<div>Joel - thank you for the very informative fuel/temp gauge calibration sheet. Looking closely at my Smiths gauges, there are double dots at the low, the midpoint and high - slight graphic variation but easy enough to work with. I swapped the leads from the fuel to the temp gauge and now the temp gauge reads beyond full scale - that was a surprise! Leads me to believe that I do not have a gauge problem. I was going to double check the voltage at the gauge and sending unit.
I did not realise that I did not have an analog voltmeter at home (could have brought one home from my workshop garage today). It is starting to look like a wiring or voltage supply problem (even though the water temp gauge reads normal).</div>
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<div>Thinking out loud - I don't have a variable DC voltage device. If I were to plug a DC output transformer (wall-wart, have plenty of those) into an AC variac (have) I should be able to dial in a desired DC output voltage - yes? </div>
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