Rim Drive Mod or how to make it even better


I was going to just add this post to a previous post regarding the VPI rim drive, but this is important and I want all those who use the new drive to know this. I just spoke to Harry W who told me that if you use sorbothane, or soft felt, etc, under the feet of the motor/flywheel assembly, the sound is even more improved. Don't use it under the turntable itself...only under the motors. I tried it and it REALLY works.
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No foam rings...The problem with the cones, is that when you unscrew them...make them taller, they get rickety.
Without the foam rings, the net difference in height between the cones and mini-feet is 1/8 inch. That's still not enough clearance to use my outer ring clamp.
Do the mini feet have height adjustment? If so, how is it done?

Cheers.

Tom
Hey Tom,
I was thinking that if I was faced with raising my VPI TT with the cone feet, I would simply install a longer 1/4-20 screw and put a spacer between the TT and cone. The spacer could be made out of wood, aluminum or plastic to any height one needs.

Mike
Good idea. I think I'll try that. I'm not really feeling like spending $300 for the mini-feet just so I can gain the extra height.
After about 4 days of running the rim drive 5 to 6 hours a day, I see very little improvement in speed stability. If I put my ear to the rim drive, I can hear the noise of the "thicker" portion of the belt contacting the platter. Whether the belt is actually thicker at some point on its circumference, or just isn't seated yet, is anybody's guess. At that moment the platter speeds up slight, then slows down. This repeats over and over, and the KAB speed strobe confirms this by showing the "33" rocking back and forth ever so slightly.
My guess is that I will put a call into VPI tomorrow, and unless I get some recommendation that sets things right, will likely go back to the belts until this upgrade is ready for prime time.
Cheers.

Tom
TFK..Have you put a soft material under the motor assembly, and make sure the turntable itself is solidly resting directly on your table?? That soft footer/solid setup completely cured all the problems...and it sounds absolutely stunning. MUCH better than the belt drive. Are you using a platform of any time?? Try it without.