Thanks for the speedy response. Yes, the motor is as you describe, and the heat sink does get quite hot, although not excessively so. I had deduced that the holding voltage was reverse polarity/half-wave ac, and was thinking about some sort of relay device which cut-in after a suitable delay (to all...

Any Starturn 8 users out there, experiencing tool-changer problems? It seems that when the toolpost reverses against the detent, the motor is still under (reduced) power, which eventually results in damage to the primary tufnol gear in the motor gearbox. Mine is currently on its fourth gearbox. Does...