Replace VPI TNT rubber belt with nylon thread

If you're even considering this then you need to have a speed controller as well. The different diameter of the thread vs the rubber belt will result in a speed difference on the platter.

Basically you need a non-stretch string, nylon or silk seem to work best. You will probably need to give the platter a starting push with the string. The sound difference / improvement is very noticeable. Better PRAT and detail retrieval with the string. Notes seem clearer and unsmeared.

If you don't have a speed controller you could try putting something heavy and smooth up against the rubber belt where it comes off the motor spindle before it gets to the platter. You just need to touch it enough to damp those nasty vibrations travelling along it.

The string shouldn't be overly tight. Just enough to keep the slack off and make the platter spin. too tight and it seems to constrict and over-control the platter. Let the mass of the platter do its thing.

You can't do it without a speed controller. The different diameter of the string vs belt will result in a major speed difference.

Here's a link to an on-line vendor for inexpensive silk thread in any color you may want. I recommend size or 3.

Griffin Silk Bead Cord. Link below for online supply:
http://www.artbeads.com/stringing-materials-griffin-silk-bead-cord.html

Alas, my VPI motor has a V shaped capstan, so silk thread is all I can upgrade to. No mylar for me. However, the silk thread is a substantial improvement over the original rubber belt.

Thanks Don, but I'm not sure I can actually remove my capstan from my motor. I've tried before and I really think it is epoxied on. My VPI motor is very old.

I'm afraid to do this properly I would have to buy a second motor, and I really am quite happy with the silk thread.