Makes sense to me. A more compliant contact between the rim and main platter gives a controlled smooth pressure and more stable speed transmission. I experienced this with rollerblocks under my TT plinth. Another good upgrade from VPI .
VPI Rim Drive
Amongst the bills that came today was a number 10 envelope containing a new belt for the rim drive of my Superscout. The belt is a brown color replacing the black one and feels more "tacky" and soft. I pulled out the first album my hand fell on and played the first track with the old belt. I then removed it and installed the new belt, pushed the table to the motor assembly and listened again. The new belt is better by far. The layering of instruments was much more pronounced, although the width of the stage retained its proportion as before. The highs are certainly cleaner, clearer, and the whole spectrum is faster. Instead of hearing blocks of instruments, I hear seperate instruments cooperating in the event. Loud and thickly arranged sections are effortless unraveled - you can clearly identify all the separate instruments in the cooperation of the piece. Chords can be heard as separate tones contributing to the quality of the chord. Tambourine and other percussion instruments are fast and clean..the jingles are more delicate, brassy, and separate. The lows are more effortless...not louder, just at ease going down, down, and down. I encourage all of you with the dual motor VPI rim drives to get one of these new belts. It is a pain to put on, but you only have to do it once.