[magic43]

Right forearm job or what?

How Mr. Hogan did that? As i see the picture, the length of BS is pretty the same (6-iron on the left and Driver on the right), what made the PA #2 so different?

KOC,

Mr. Hogan set his feet differently for different club. In the example shown in your link, with the driver, he set his feet closed with respect to the ball-target line, thus allowing the hips to rotate in the backswing more freely. For the 6 iron, the feet are set up square to the ball-target line, thus putting a slight restriction on the amount of hip turn. With the short irons, he set them up open to the ball-target line putting even further restriction on the hip turn. In any case, his hips and shoulders were aligned square to slightly open to the ball-target line. This was the explanation in "Five Lessons" and in V.J. Trolio's excellent book, "The Final Missing Piece of Ben Hogan's Secret Puzzle".

Perhaps, one of the excellent member's here can give a much better explanation than this poor attempt.