Reply to "Early Legacy Odyssey II Speed Control / Run Away Engine question"

Check the flywheel with the plastic tach reader ring. I had the same issue, the flywheel came loose on the motor shaft, tightened the setscrew on the side of the flywheel back up, problem solved.If you remove the top short hood access cover, its just held on by magnets you can run the loco and see if the flywheel is slowing on the shaft. With the flywheel slipping and the speed control on the loco thinks its going too slow so it continue too increase speed.

1/8/125:06 PM

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