[Yoda]

Yoda:

Please explain what part, if any, the two flails (2-K#4 and 2-K#5) play in your explanation of hinging.

Ray Cayse

There are three major concepts in The Golfing Machine:

1. Hinge Action (Clubface control);

2. Angular Motion (Clubhead Control); and

3. The Inclined Plane (Clubshaft and Sweetspot Control).

To these Three Major Concepts is attached endless supporting detail. Unless and until the 'Big Three' are understood, that detail continues to baffle and confuse, and the Book -- not to mention the Golf Stroke -- remains a mystery.

Now to your question. The Golfer's Flail is the means by which Angular Motion and Momentum is generated (2-K). It is a Clubhead concept and thus totally distinct from the Hinge Action (a Clubface concept). To be sure, there are interrelationships, but these do not override the separate identities of each.

Reading between the lines of your question, the Hinge Pins of the Golfer's Flail (in the Left Wrist and Shoulder) are there to permit, create and sustain Clubhead Momentum. They are not to be confused with the Hinge Pins of the Left Shoulder Hinge Assembly, which are there to control the Clubface and maintain the Clubshaft On Plane.
Topic:2-c-3 Ballistic path