[Daryl]

I'm glad you're back Okie. You've always been a pleasure to talk with and I'm looking forward to your thoughts.

At the very heart of “Golf Swing” is “What makes the Ball do what it does”. Without this rational, we couldn’t decide how to strike the ball and make it go where we want. As important, we couldn’t “Improve” because we’re unaware of what to do and how doing more or less determines Ball Flight. Currently, there are two theories about “What Causes Spin” and one theory about “what happens” when the Ball Spins.

The science supporting the Golfing Machine concerns Compression”, “Impulse”, etc., and states:

“The ball will respond to non-linear (angular) force exactly the same as to linear forces only if the application produce forces equally linear to the ball but not necessarily linear to anything external to the ball.

Briefly stated, it is necessary to find a way to compress the ball through a particular point along a particular line, and maintain this compression through the same particular point and along this same particular straight line, through the entire arc of the Impact Interval, and with geometrical precision for consistent control. Study 2-K and 2-N.”

Jorgensen theorized:

“Frictional torque comes into play to set the ball spinning. We can only guess at the details of the collision, but we can use some physics to make an educated guess.“

For the most part, this is where Jorgensen’s theorizing ends. His goal was to present a descriptive account of Ball Flight, and the “D-Plane” serves well by predicting the Ball Flight of a “spin producing collision”.

The confusion is not about what happens when the ball spins. Both Homer Kelley and Jorgensen explain Ball Flight by describing that “Lift forces” are perpendicular to the Axis of Rotation of the Ball.

The "Debate" is about what "Caused the Ball to Spin". Jorgensen suggests that it has more to do with the ball sliding up the face of the inclined striker. The Pivot closes the Clubface very evenly while the Clubhead travels its Orbital Path. It is very important to Jorgensen that the Clubface maintains a constant relationship to the Clubhead Orbit because any change in Clubface Alignment will change the amount of spin.

It's "important", in a way, that a location is chosen to take the Clubface Angle and Clubhead Path (Angular force) reading. Impact? Separation? Somewhere in between? In a way, it's not important because as long as the Clubface is closing at a constant rate, the calculation can be adjusted to read before, during or at Separation. Hmm? the math can be done before and after also.

A very significant math problem appears when you treat the Ball as Low-Point with out the Ball being Positioned at Low-Point. I can go into great detail but this post is already becoming boring for readers.

When we think of the Clubhead going Down, out and Forward, it's in relation to the Planes orientation to the ground. The reality is much simpler. The Sweetspot of the Clubhead is an Orbit. It wants to stay on an Orbit.

The Golfing Machine is very different. We know that "Hinging" will cause the Ball to respond to an Angular Force the same as it would respond to a Linear Force.

For an excellent understanding of the purpose and affect of Hinging, please refer to the following post:

http://www.lynnblakegolf.com/forum/s...rcle#post56102