VPI Rim Drive vibrations

Dear Stringreen,per your advise I've contacted Dan from Vermontaudio.com (edensoundaudio.com)regarding Bearpaws. He has responded quickly with info about just lanched new Bearpaw specifically for the SSM.
Per Dan, it's plug and play with the stock VPI mounting hardware; the base height is the same as the VPI OEM cones (1.875", or 1 7/8") and yet the solid brass of this Bearpaw remains infinitely adjustable (within 1/2" of the base height) in order to fine-tune leveling of the table at will. Adjust height with the touch of finger, then tighten the locknut just as easily.

One question though - my table sits directly on the top of the MDF shelf of Sanus rack and I have a bit springy wooden floors. Stock VPI SSM feet are able to tame floor vibrations relatively well.

With Bearpaws the table's plinth is going to be coupled directly to the rack/floor. If there will be any issues with vibration transfer from floor to the table?

Yes I know about that. Dan and I went round and round until I figured out my issue. What I did was raise the motor assembly with four Cardas wooden blocks still with the soft sponge rubber feet on the unit, which placed the rim drive in exactly the right place on the edge of the platter. With the newly designed Bearpaw, you don't need those 4 wooden Cardas blocks. Regarding vibs from the floor....I would make sure that my supporting table is solid, and would still get those Bearpaws...especially now that it is a custom fit. I know that it will prevent the arm from rocking. I think that's the best you can do. My floor is very solid French travertine tile...one reason I bought this house

Well, dear Stingreen...when I've bought my house I didn't have analog setup yet :-) After talking to Dan from edenSound, I'm going to get his new gizmo - polymer/brass TerraCone:

"Yet for the ultimate in single-direction energy transfer and simultaneous isolation, you might want to step up to our hybrid polymer/brass TerraCone .
With a model sized specifically for the VPI tables w/ outboard motors, the TerraCone is our best and most sophisticated vibration-control foot for replacement of the stock VPI feet. It has a dual-material construction: solid high-quality brass for one-way egress of energy, and our proprietary TerraStone high-density acoustical polymer for isolation of the table from structure-borne and room-borne vibes. The TerraStone polymer is the most inert, neutral vibration-absorption matrix I have tested in more than twenty years of listening."

Thanks for the information about the tera stone. Let me know how it works out

Krell303,

If you need to isolate your TT from the floor yet also need it holding rock steady vis-a-vis the motor, the obvious solution is to place both TT and motor on a single platform, then isolate that from the floor. Vibraplane, Symposium shelf, Minus-K, a DIY or whatever.

Two engineering requirements, two solutions.