Tables That Feature Bearing Friction


I recently had the opportunity to audition the DPS turntable which, unlike most tables, has a certain amount of friction designed into the bearing. This, when paired with a high quality/high torque motor, is said to allow for greater speed stability--sort of like shifting to a lower gear when driving down a steep hill and allowing the engine to provide some breaking effect and thus greater vehicular stability. I am intrigued by this idea and was wondering what other people thought about this design approach. Are there other tables which use this bearing principal? One concern I have is that by introducing friction you may also be introducing noise. Comments?
dodgealum

Showing 1 response by rhljazz

Air would be a poor choice for a drive mechanism since it is compressable. Hydraulic fluid on the other hand is not compressable. Driving the platter with hydraulics would be an alternative choice. A pressurized bearing could also be utilized.

I'm not a turntable expert, just a bmw tech. I believe some models of Jeep/Chrysler used hydraulic cooling fan motors powered by the P/S pump due to the fact they are quieter. Perhaps a similar system could be made for a turntable? Just throwing out ideas.