Re: Westclock direction
That's the same as the principle of some of Garrard's posher turntable motors; which were were four-pole types (hence with a deterministic starting direction) and used an armature having both a permanent magnet (for synchronous operation) and a shorted turn (for operation as an induction motor).
When power is first applied, the motor runs as an induction motor and attains its maximum sun-synchronous speed of about 1400 rpm; it is then close enough to synchronous speed for the motor to finish the last bit of acceleration running as a synchronous motor, and thereafter runs synchronously at 1500 rpm. (No power is transferred into the shorted turn at synchronous speed, since the armature is effectively stationary with respect to the stator.)
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If I have seen further than others, it is because I was standing on a pile of failed experiments.
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