VPI SDS exact speed in .... 40 minutes?

W2 - Are we not talking about inverted bearings here ?

Good Listening

Peter

Why speculate? Call Harry. Or Matt.

The half-black and half acrylic platters are for earlier TNT and Aries tables. (I've got one) They use well-type bearings. So I don't think you're discussing inverted bearings. They should be oiled, not greased.

Not sure about the bearing on the HR-X.

But I don't think the bearing is the problem. I would look upstream at the SDS. How long should an amplifier take to reach stability? How long for a tone generator?

That's why I suggest a call to VPI.

Why hasn't anyone suggested belt slippage as the cause of this problem (and it IS a problem, not "normal")? I could envision that a high mass platter might slip the belt for several minutes at start-up, if the motor is relatively weak and the belt is not grippy.

The Dual motor Flywheel drive station for sure use a inverted bearing, which should be greased ad I described above, too much grease will cause it to bind up.

I use the SDS on all my belt drive tables along with the Dual motor drive station and it is very stable and up top speed in a few seconds, speed is checked with the Southerland time line.

If your plater is older and do use a well bearing then indeed you should use a thin viscosity oil on the platter bearing.

As far as belt slippage, possible, I use 4 belts from the Dual drive station to the platter so that to me has never been an issue.

Groovemaster

Good Listening

Peter