Pivot vs. Arms and Hands.
I will try to reduce this argument to some basic questions, which I will answer.
1. Brian, What percentage of the speed of the clubhead comes from the arms, hands and wrists, and what percentage comes from the Pivot?
First of all, let's look at what absolutely happens on the downswing, and then we can start figuring percentages.
At the top of the swing, the
left arm is about 45° across the chest, the
left wrist is cocked about 90°, the left hand is turned about 90° open.
The Shoulders are turned about 90°, the hips about 45°, and the weight has shifted to about 85% to the right foot.
From the top, EVERYTHING MOVES VERY MUCH TOGETHER. Trust me on this folks. All the 3D machines concur, and we had stiff from BioVison back in the very early 90'. EVERYTHING PRETTY MUCH STARTS TOGETHER.
At some point in the dowmswing, the legs have a big slow down—nearly a stop. Then so do the hips, then the shoulders.
At that point, the arms move some more before they do their "slow down to a near stop," then the hands—as a unit—then the ball gets hit.
Boom!
So, in english, the body and the arms start down as nearly the same speed, and at some point, the clubhead is moving over 100mph.
We'll talk about the arms, hands, and wrist sequences later.
Imagine a car speeding up in a tight circle. Hanging out one window is a big rubber trunk, about as big around as a telephone pole. The rubber trunk is long enough to reach the back bumper, and at that point an oversize golf club is attached with a 90° hinge.
So, the car is producing speed. But in the real world of golf, the arms are too.
The snap of the KINETIC CHAIN (or the car putting the brakes on), and the release of the wirst cock and hand roll, produce all of the speed.
So...can you pivot on your knees?
Yup.
And you can only do it to a point...an automatic pivot snap.
Does Jack K. pivot?
Yup.
He pivots and stop it abruptly, the best way to pivot.
Did
you learn anything, Billy?
