[12 piece bucket]

HB

So this MFH theory resonates with you?

He states-: "The second firing needs to be really explosive and it needs to drive you through the last 90 degrees of hip rotation till the end of the swing.

In a biomechanical graph, this means that Tiger has two velocity peaks for his hips and shoulders. His second hip velocity peak occurs just prior to impact and this "slingshots" his shoulders (2nd firing) into the ball with maximum force. Ben Hogan did this as well.

But Jamie's swing is even more violent and powerful. His hips and shoulders reach their 2nd velocity peaks right at impact. All of this adds to his speed AND effective mass at impact. The added mass of his body firing at high speed right at impact will add to his smash factor and higher ball speeds at impact. This is sledgehammering at its finest."

Does this theory seem sensible? Does the idea of firing the hips/shoulders again before impact increase ball flight distance? How? Could you provide the causal link explanation that I obviously cannot grasp. How does the added mass of the body increase smash factor and produce higher ball speeds?

He stated-: "If your hips and shoulders slow down too early in the downswing (because no one told it to fire again), then naturally conservation of angular momentum takes over and all speed and energy goes to the hands. Voila! We are casting! At the very least, without one's shoulders firing at high speeds at impact, we get a hand flip. It just can't be helped. We flip because we don't fire our hips and shoulders again."

So, do you believe that a failure to fire the hips and shoulders again leads to hand flipping?

Jeff.

Hips going forward . . . vertical forces via the ground . . . swing the arms FAST . . . This dude has something . . . strong on dynamics but weak on geometry . . . the articles on tiger's transition and the arms swing articles are really good.