Classic 3 VPI


My Classic 3"s belt squeals upon turn on.  After a couple of seconds, the squealing stops.  I've tightened the pulley, installed a new belt and did what VPI recommended, I powdered the belt.  After applying powder, the squeal quietened but squealed again on the very next try.  I reapplied powder and the same thing happened.  Any advice is welcomed.
donpenland
pbnaudio,

The use of multiple belts would seem, on it's face, to not be a good idea. Connecting the motor to the platter more, thus transferring the vibrations?

Since the Classic 3 has an on-board motor, this may not be an issue and in fact help to dampen the motor vibrations?

Have you actually tested this in some way or is this based on listening? Thanks.
" on the vpi classic 3 the pulleys have grooves for 3 belts "
 
Look closely and you'll see the grooves are slightly different in size. The grooves are used to fine tune speed and not for extra belts.
Try dropping your belt in boiling water for 20 seconds or so. After doing this I have had no belt squeal for months. It worked on my previous belt as well.