Melm,
The reason to put the Tachometers in the turntables to display their accuracy. If you got it flaunt it. :-)
I don't hear the "servo hunting" your describing rather I hear consistency in tempo, great pace and drive. I do add substantial weight to the platters of these tables by adding copper mats, this of course increase inertia so if what your describing exist its effect is greatly diminished.
I have built several plinths for the older style VPI DD table - even one for HW and it was a very nice machine. I have the new one on order already from pictures I've seen its smaller than the old drive.
To get the same speed stability I have a hard time getting with any belt drive. For an example I made several experiments with belt drive units one was adding more than one drive belt - 2 was better than one 3 was better than two and 4 was again better than 3 this must be because there is some microscopic belt slip. Any one with a VPI Flywheel drive station should try more than one belt - you'd be surprised by its effect.
https://pbnaudio.com/original-groovemaster/
Good Listening
Peter
The reason to put the Tachometers in the turntables to display their accuracy. If you got it flaunt it. :-)
I don't hear the "servo hunting" your describing rather I hear consistency in tempo, great pace and drive. I do add substantial weight to the platters of these tables by adding copper mats, this of course increase inertia so if what your describing exist its effect is greatly diminished.
I have built several plinths for the older style VPI DD table - even one for HW and it was a very nice machine. I have the new one on order already from pictures I've seen its smaller than the old drive.
To get the same speed stability I have a hard time getting with any belt drive. For an example I made several experiments with belt drive units one was adding more than one drive belt - 2 was better than one 3 was better than two and 4 was again better than 3 this must be because there is some microscopic belt slip. Any one with a VPI Flywheel drive station should try more than one belt - you'd be surprised by its effect.
https://pbnaudio.com/original-groovemaster/
Good Listening
Peter