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Reply to "Dead Motor Replacement?"

I have my doubts that it's the tach reader.  If the motor with the tach is not running away, it's getting the tach signal to the board.

I'll say again, the two motors when they're not on the track will very rarely run at the same speed or start up at the same time, this is totally normal.

You want a simple test to see if the second motor will pick up the slack?

Grab the tach flywheel lightly and put a load on it.  As the current and voltage goes up to handle the load, the second motor will also receiver more power, and like magic, it'll be running.

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