[cometgolfer]

I'm trying to get a better understanding for the causes of over acceleration in a swinger.

Is it all about avoiding muscular effort with your left arm and any 'adding' with your right arm. Are there any other important factors? For example how important is the pivot? Can you rotate too fast?

I would agree that any attempt to 'add' with the left or right arms are contributors. But I also think a key contributor is simply not understanding and experiencing the endless belt concept.

Since gaining an understanding of the endless belt effect my tendency to over-accelerate is greatly reduced. I think over-acceleration stems from a belief that it will allow you to hit it farther. And if you think that then you'll find a way to do try and do it... be it with arm action or pivot action. Once you experience how accelerating your hands simply to set up the proper rhythm allows the endless belt effect to "do it's thing" you start to trust just how powerful that can be.

Another question I have would be to define 'over-acceleration'. Is it accelerating the hands too far into the release period or accelerating the hands to a speed that can't be maintained through release and impact?

CG