2. analog
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VPI Classic tweak

So I ordered a spare belt for my Classic One to have as a spare and when I got it I looked at the table and thought...Hmm why not try 2 belts? After a little research I did find a post on another forum from Mike at VPI who stated that a second belt should open things up a little bit and it did. A little bit more focus and imaging is what I observed. I found no discernible difference in platter speed. At 26 bucks it's a relatively cheap tweak plus the platter looks pretty cool with 2 belts.
mjm1124
bifwynne
2,206 posts
 
Just a thought. I wonder if putting an extra belt on the platter/motor mount could prematurely wear the motor bearings because of extra tention on the drive shaft and bearings. I'm not sayin' ... just asking.
pbnaudio's avatar
pbnaudio
1,614 posts
 
Bifwynne

No have run 4 belts for many years

Good Listening

Peter
captain_winters
133 posts
 
Don't see how that can be done on classic series pulleys. Every pulley position is a different diameter, to allow for speed adjustment for variable AC frequencies. Multiple belts will each be at a different speed.
actusreus
733 posts
 
The pulley has three possible positions for each speed so it is certainly possible to put two belts on the top and bottom groove respectively.

This is interesting and I'm tempted to try it myself. Out of curiosity, those who have the SDS, do you use the the 33 or 45 diameter? Either one is possible since the SDS will adjust the speed so I'm wondering which diameter would offer the best speed stability. The 45 being thicker would grab more of the belt; the 33 being thinner less of the belt and more of the platter. Any thoughts?
captain_winters
133 posts
 
interesting to see what speed you will end up with, since the belts will be fighting each other, with my AC frequency and I don't have a SDS I run at the top groove for 33, it is the closest using freickert android app and the test disc.
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