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<div>Stepper motor or quadrature coil driven gauges actively drive the needle to a given angle on the gauge, so they are not that sensitive to the needle weight. However, our old-school tachometer only expects to drive against the torsion spring in the needle
movement, and its linearity across the scale depends on being properly counterbalanced. If you put on extra paint without adjusting the counterbalance then the tach will start to read low at idle and high at the redline.</div>
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<div>Theo</div>
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<span style="font-weight:bold">From: </span>Tigers <<a href="mailto:tigers-bounces@autox.team.net">tigers-bounces@autox.team.net</a>> on behalf of Tigers List <<a href="mailto:tigers@autox.team.net">tigers@autox.team.net</a>><br>
<span style="font-weight:bold">Reply-To: </span>"<a href="mailto:CoolVT@aol.com">CoolVT@aol.com</a>" <<a href="mailto:CoolVT@aol.com">CoolVT@aol.com</a>><br>
<span style="font-weight:bold">Date: </span>Saturday, September 10, 2016 at 9:05 AM<br>
<span style="font-weight:bold">To: </span>"<a href="mailto:tsmit@shaw.ca">tsmit@shaw.ca</a>" <<a href="mailto:tsmit@shaw.ca">tsmit@shaw.ca</a>>, Tigers List <<a href="mailto:tigers@autox.team.net">tigers@autox.team.net</a>><br>
<span style="font-weight:bold">Subject: </span>Re: [Tigers] guage needle paint<br>
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<div>Think I told this story before.....a person I know worked in a factory run by BF Goodrich Aerospace many yrs. ago. She soldered and assembled parts to gauges. Her place in the assembly line was to solder a few parts, paint the needle and assemble her
section of the gauge. I asked what the needle paint was and she said she didn't know. It was just something in a little bottle and had a brush. She said the other people put one coat on the needle, but she liked to put on 3 coats to make it look nice:-)</div>
<div> Someone reminded me that these gauges were most probably calibrated after final assembly and testing. But it seems funny when we worry about putting too much paint on our needles. These gauges, being used in the aerospace industry, gauges that were assembled
by workers who had to become certified solderers (never knew that designation existed) , each worker having a specific task in the assembly and these gauges having to cost 10's of thousands of $ each, just got a few dabs of some kind of red paint<img src="http://cdn-cf.aol.com/se/smi/0201d201a5/08"></div>
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