Extensor Action is a Non-Accelerating Thrust. Use as much as you can. Although it doesn't Accelerate the Clubhead directly, it contributes to precision of the Accumulators.
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Clubhead Lag (7-19) promotes even and steady acceleration, assuring dependable control of distance. The Power Package utilizes four types of Thrust:
Accelerating (Accumulators driving the Lever Assemblies)
Non-Accelerating (Extensor Action supplying Power Package Mass)
Acceleration Control (Lag Pressure Point sensing Clubhead Inertia)
“Centrifugal Acceleration” (Centrifugal Force pulling the Clubhead toward its In- Line condition)
Extensor Action is a Non-Accelerating Thrust. Use as much as you can. Although it doesn't Accelerate the Clubhead directly, it contributes to precision of the Accumulators.
The Accumulators, Cocked Left Wrist, Right Hand Roll, Left Arm Across the Chest and Bent Right Arm, are out-of-line conditions. But regardless of their degree of out-of-line, they need to maintain their Alignment to the Plane.
Each Accumulator may Release in a Sequence, #4,#1,#2,#3. They may be omitted or Overlapped. Each will Release On-Plane and continue Tracing the Plane Line. Left Arm Blast-Off, Thrust On-Plane; Right Arm Thrust, On-Plane; Left Wrist Uncock, On-Plane; Right Hand Roll, On-Plane.
Extensor Action keeps the Primary Lever Aligned and adds Rigidness to the Power Package so that it doesn't collapse during the Pivots powerful rotation and cause the Release of any or All of the Accumulators to move Off-Plane.