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VPI Scout - slow speed , help ?

Hi

I've recently purchased a KAB speed strobe which has indicated that my Scout is running very slow (notches moving counter clockwise); over 100 notches in 60 seconds.

I have the newer black belt with unknown time on it; I've cleaned the belt, motor grooves and platter grooves. I get power from a dedicated 15amp plug, through an Audience AR-6 conditioner and stock power cord to the motor. I've tried using different notches on the upgraded 300 rpm motor pulley, with little effect.

I suppose the cheapest experiment is to buy a new belt, and lube the spindle bearing (for which I'll have to purchase oil) and see if that changes things. Short of buying the VPI SDS, are there any other actions which may help here for little money? Perhaps a used Variac would essentially do what the SDS does?

Your constructive feedback is appreciated.

Regards,

Bryn
bshapperd

Showing 1 response by dtc

dtc's avatar
dtc
1,047 posts
 
Your orignally 100 notches in 60 seconds is a 3% error, I if read my KAB instructions correctly. That is huge.

How fast is it running?

I am surprised that using the different steps on the pulley have no effect. That is normally how you adjust the speed. I have a Scout with the 300 rpm motor. It is on speed at the top notch, and noticible fast at the bottom notch.

There are differnt pulleys for different platters. Do you know that you have the correct one? I remember looking at a used 300 rpm motor, but it had the wrong pulley. So, I bought a new one with the correct pulley. Just a thought.
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