Re: Ah ha! I got it!
Originally Posted by DeanS
Have you checked the amount of shoulder rotation and the corresponding amount of arm swing by video? More importantly, have you checked your amount of hip turn? One terminology note, you will hear a lot of people refer to a quantity of "arm swing", and others will refer, using The Golfing Machine terminology to "Power Accumulator #3" or PA#3. This basically means how much you have pulled your left arm across your chest. If you keep your hands pretty much in front of you at the top of the backswing, there is a small amount of arm swing, (small PA#3). But if it is completely squished against your chest, you have a large arm swing. Now, if you have a minimal shoulder turn, and a huge arm swing, you will have to start your arms before your shoulders to get them back in front of you, otherwise a shoulder turn would pull your arms over the top. I had this problem and traced it back to a lack of hip rotation in the backswing, which took the shoulders to about 70° instead of 90°. What I did from the 70° position was to compensate by pulling my left arm hard across my chest wall so that I could get the club back to parallel. I found for a while that if I started down with my arms, it brought my hands more in front of my shoulders, then I could turn through with my hips and shoulders and hit pretty good shots. If I didn't start with this move, I would swing over the top, hit pull-hooks and chunk every other shot.
This is essentially a compensation to bring the arms and shoulders back in sync that could be eliminated by just pulling the arms across the chest a little bit, and turning the hips more. Then a hip turn could start the downswing without pulling the arms over the top. Otherwise a hip turn to start the downswing would pull the hands over the top.
I think better players choose to keep the arms and shoulders in sync and turn with the hips because it is just difficult to time how much to bring the arms down before starting to rotate through with the hips. It sounds like you guys are talking about two sides of the same coin to me.