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Getting dictaphone motor running smoothly

Posted: Wed Aug 29, 2018 9:38 am
by kirtley2012
I've got a phonograph I'm putting together with a dictaphone electric motor.

The motor is coming off a transformer to bring the voltage down and through resistors so it doesn't have infinite current but I'm having a warbling problem whenever it is brought down to speed, it's not the pulley or belt, could it be the governor?, I'm struggling to think how to solve it