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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 3 responses by brf

brf
1,715 posts
 
The VPI Traveler table is a belt drive table. The issue being discussed here converns VPI's rim drive.
brf
1,715 posts
 
The Super Platter had a problem with the Delrin seperating from the stainless steel middle sandwich on a few examples, not all. In addition, manufacturing the Supper Platter cost 3 times that of the Classic platter which would drive its retail price to over $2K!

Delrin and stainless steel are machinable to a very high standard and can be machined to the same tolerance as the aluminum Classic. If using a rim drive with a Super Platter, it should be run on the middle ss portion. My Super Platter was perfectly round and had the same perceived manufacturing tolerance as my Classic platter. The two platters sound different, and not necessarily better than the one another.
brf
1,715 posts
 
Stringreen, I own or have owned the TNT 3,4,5, Super Platter, and Classic platters. My order of preference is Classic, TNT5, Super Platter, TNT4 and lastly the TNT3.

I can easily understand how someone may prefer the Super Platter over the Classic. They are both excellent platters that do things differently. For some Super Platter owners, a change to the Classic could be deemed a downgrade based on their listening preferences.
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