How Not To Install An Optical Tach Encoder!

gunrunnerjohnOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

I opened up a TAS equipped locomotive that had runaway issues, usually the tach reader or it's wiring. I think I found the problem!

It looks like not only was the kludge unsuccessful, but the locomotive shell had been pressing down on the tach reader hard enough to score the tach strip on the flywheel! The spacing of the sensor was about 4-5 mm, it should be .8mm to around 1.1mm.

No, I didn't leave it like that!

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12/2/221:44 PM

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