[Daryl]

Daryl - you wrote-: "#3 starts after #2 release begins but it is also spent before #2 is spent. #2 release starts after #4 release but it gets spent before #4 gets spent."

Why do you believe that #3 is spent (completely released) before #2 is spent. What is your definition of a spent #3 and a spent #2?

You also state that #2 gets spent before #4 is spent. I thought that #4 is spent at low point.

Jeff.

Good questions! Brain Teasers.

#3 stops swiveling when the Left Wrist is Vertical to the Ground, which is Technically 10-2-B with a Forward Leaning Shaft at Impact (even if the Left Wrist appears to not be Vertical, the Right Wrist is Vertical and Level). Swivel on the Backstroke and on the downstroke you swivel-back-to-the-Hinge. Any further Closing of the Clubface is Hinge Action Pivot Roll (otherwise your divots would look really funny - a straight thin line parallel to the plane line). So the Impact Interval Ends the Acceleration of #3.

#2 is Fully Uncocked at "Lowpoint" and the Law of the Flail states that Fully Uncocked is the Point at which #2 begins deceleration. So Lowpoint Ends the Acceleration of #2.

When does #4 stop Accelerating? #4 decelerates when the Left Arm stops accelerating away from your chest which is "Both Arms Straight" or further hopefully, if possible.

So, The Acceleration of #3 (Swivel plus residual #2)is in addition to the accelerating #2 and which is in addition to the acceleration #4. And, the acceleration of #4 is what Releases #2. The Release of #2 creates centrifugal force which Releases #3.

It's like throwing a ball while running on a moving train.