Turnable database with TimeLine

It is a Series III from the 90s. I think that is good advice. I will check with Sota. I had the impression that only the Cosmos features a sub-chassis mounted motor with the platter and tone arm. I also have some ideas that would be reversible, to try out on my tt to fix the horizontal axis.
This thread has been a good learning experience. I bet a number of people suspected suspended tables didn't hold speed as consistently but didn't really understand why. I knew before that any movement of the turntable due to footfalls or just pulling on the cue lever affected speed; but I didn't realize til now how much the variable drag by the stylus would affect belt tension and ultimately speed. Plus, the improvement in detail and distortion that I experienced with better speed control is an eye opener.

I used to think it was "normal" for the pitch of a sustained piano note to waver up and down. (After all, my old AR did the same thing.) I thought it was some issue with the master tape, wow or something like that. Not!

 I am convinced that you can improve and stabilize a good turntable by the following measurements:

1) ensure you have separate isolation platforms for motor, table and flywheel

2) use a motor and pully which are in good condition and work absolutely stable (in case of older Micro designs maybe check, lubricate, exchange the transformer and/or capacitors)

3) better go for belts than threads. ensure the belts have the same distance and measure the belt tension. should be the same value for both belts

4) the VPI double motor driven by the SDS is one of the most   precise and stable motor/steering combinations on the market today

Dear Thuchan,
In principle, it might not be a good idea to mount motor, table, and flywheel on separate isolation platforms. Unless you also stipulate that said platforms should be identical in all respects and mounted on a common shelf. The issue is that if the respective platforms resonate at different frequencies, and/or if they are differentially isolated from environmental energy, then there is a risk that the motor and tt will move relative to each other. That allows tension or relaxation of the belt, alternately; not good for speed stability.

Why do you dislike threads vs "belts"? For a belt, do you recommend compliant or noncompliant? Thanks.

Thuchan, you recommend three separate isolation platforms for motor, table and flywheel. How can one control relative movement between the three? If they move differently, would that not effect belt/thread tension and thus effect speed?

A few posts above this thread discusses the early SOTA tables that have the motor mounted on a sub chassis which is separate from the platter, so they could move relative to each other and according to some users, this caused speed issues.