2. analog
  3. 1323104535

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
krell303 OP
40 posts
 
Stringreen, thank you for the suggestion!
buconero117
2,311 posts
 
Just face it, the design is flawed, and Harry often admits it. Harry is marketing smart and knows the following will buy any 'change' that keeps product moving. Don't get me wrong, VPI basic units are outstanding, I own an Aries I. Just don't buy into his current designs wherein he takes the original concepts and violates them, e. g. motor in the pith.
stringreen's avatar
stringreen
6,531 posts
 
Buconero117 - Not any more
hiendmuse
257 posts
 
I found that the rubber feet on the SAMA motor assembly were causing slight vibration on my Super Scoutmaster with
Rimdrive. I placed 1 Symposium Acoustics Fat Pad below and in between each set of front and rear rubber footers below the motor assembly. Result was no more vibration and better sound- more solid, better soundstaging. Also replaced the mini-HRX feet below the table with Eden Sound Audio Bear Paws- again, better performance, as Stringreen noted above.
krell303 OP
40 posts
 
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?
More to discover