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 ml8764ag

@edwyun .... re. “Some RPM apps are better than others. The preferred ones have a way to be calibrated“

Please name some of the apps that have a way to be calibrated.