VPI Rim Drive vibrations

Macauak....That's what Harry told me....didn't work. The cure I noted above is the only way to completely solve the problem that I know of. The increase in purity, dynamics,
soundstage, etc. is magnitudes better than stock.

Krell303,

My belt must have an even diameter as I really don't have any wobble issues once it is seated using the above method.

Stringreen,

When I received the single motor flywheel rim drive, I had already replaced the VPI feet and plinth so this issue was new to me.

When I have some free time, I will have another go at the rim drive belt noise.

Just thought of this. I have the Super Platter and the rim drive contacts the stainless steel. I will try changing the height of the rim drive so it contacts the acrylic instead as see if this eliminates the noise.

Maczurak, the belt itself might be perfect but it's almoust impossible to put it in the rim 's groove evenly. Small differences in belt's tension around rim's perimeter cause variations in the belt diameter - thus causing vibrations on contact with platter

I was told that the metal rim on the superplatter is more accurate than the acrylic....that's why the directions is to adjust the height so that that drive wheel rotates on the metal.

With a rim drive table, the drive puck or idler wheel has to be perfect. Their should be NO variations whatsoever so that the motor, platter or idler wheel have to absorb them! That's crazy. My Dual 1229 (yes I know it's a different design, but the principal is the same) is perfect, as are thousands of Thorens, EMT, Garrard, Miracords,Rek-O-Cuts etc. Nothing can be 'out-of-round', that is simply unacceptable especially for a table of this caliber. It isn't rocket science to manufacture something from rubber or metal and to make sure that it is 'true' and 'balanced'. Anything less will certainly be transmitted into the music. I would raise all kinds of trouble until the manufacturer corrected the problem. I hope things work out for you. Idler/Rim drive has been the most rewarding listening experience I know of for vinyl playback. Good luck..
Norman