Measuring TT Speed


In measuring my tt speed I am seeing the lines on the strobe bounce back and forth, not holding steady. This is a belt tt with a dc motor setup with a closed loop controller, and ideas on what can cause this? I am thinking the belt may be to tight, it is a new belt BTW...
jsman

Showing 1 response by noromance

If the belt is too tight, it may be causing the motor bearing to wobble by applying a bias to one side. Try backing off on the motor mounting screws if possible.