Originally Posted by
mandrake

Speaking of simple. Here is my AR ES-1 turntable. It powered by a small DC motor coupled to a belt that wraps around the bottom of the platter. It has just one speed- 33 1/3 rpm. The platter is suspended on three coil springs. The idea of the belt is to isolate the motor noise from the sound delivery.
Same principle as the Phillips 312B. Bouncy-wouncy turntable, but you could walk across the room and not bother it.