From as early as 1-L { The Machine has three functions-to control A) the Clubshaft.....and...The Inclined Plane is Clubshaft Control}, there is consistent reference made to the clubshaft and in 10-13-D to a Downstroke Clubshaft Plane. 2-F explains that there is a Clubshaft Plane and a Sweet Spot or Swing Plane and makes the following points:
-both planes always pass through the Lag Pressure Point.
-except during Impact, the Clubshaft can travel on, or to-and-from, either Plane.
There is also what seems to be a "qualification" in 2-F: "unless otherwise noted, Plane Angle and Plane Line always refer to the Center of Gravity application."
How should a student use this information or what is its significance to an effective study and implementation of the components? Should we take the wording at face value or is some mental adjustment necessary? Is #3 pp a sufficient interface?
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