I guess the answer is whether or not the speed needs more adjusting than usual?
To me, as the drive thread wears, I would expect to have to make speed adjustments more often to compensate for the decreased friction.
Other than that, I wouldn't know how else to decide if the thread was 'worn out' (other than breaking, of course).
To me, as the drive thread wears, I would expect to have to make speed adjustments more often to compensate for the decreased friction.
Other than that, I wouldn't know how else to decide if the thread was 'worn out' (other than breaking, of course).