The 96 wheel Hammond organs used a starting motor and a synchronous running motor.
You hold the momentary starter switch until the wheels reach running speed then turn on the running motor and release starting motor switch.
The synchronous running motor has little torque and is very sensitive to dry or dirty bearings.
Any speed instability would produce a dreadful out of tune.
I am familiar with 96 wheel organs and leslie speakers, email me if you have questions.
