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VPI Rim Drive vibrations

I have VPI SSM with RIM drive and SDS. The issue I'm having is a vibration being transferred from rim to the desk/platter. As the result tonarm wobbles a little bit in azimuth plane.
I tried to replace the brownish rim belt, change contact force/distance between the drive and the platter, and reinstall the belt - the vibration still there (exactly one wobble per rim's full revolution - 360 degrees).

The speed stability is very good though - have checked it with KAB Speed Strobe.

Any ideas how to resolve the issue?

Thanks a lot!
krell303

Showing 2 responses by mred

mred
88 posts
 
Anyone compare a silk (or any) thread to the rubber belt and then the Rim Drive. Would love to hear some in-depth analysis.
What would be the bigger improvement.....spending for a Rim Drive or taking the cost and putting it into upgrading from an older Phonomena to a more costly (by that amount) phono section?? Thoughts?
mred
88 posts
 
Anyone with thoughts on my previous post?
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