[BerntR]

You're probably correct that I am confused. From time to time. But not about this.

Your cardinal error is that you believe the centripetal center is established at the left shoulder. That will happen only if you stop turning your shoulders and you will lose a lot of lag pressure in the proccess. Somehow I don't think that's what you're doing.

All these drawings that places the left shoulder as a center is terribly terribly misleading. It completely nullifies what you can achieve from torquing the shoulders around your swing axis.


In a human made golf stroke, the shoulder turn will always stay around 90 degree ahead of the club at impact - and on better golfers it will be even more since the shoulders tend to be a little open at impact. 90 degrees of rotational lag (the shoulder moving back as the club is moving left etc) is ideal as long as you only consider the left side of the body. This is something you can easily feel if you do some air swings with the left hand on the club only.