I looking at 6-A-3 diagram and it appears that secondary lever is actually the left hand and clubshaft, the fulcrum at the left wrist joint while primary lever is left arm and clubshaft and fulcrum is the left shoulder joint.
So clubshaft by itself cannot be a lever. The shaft must align in a straight line to the end of the humerus(left arm) or the pisiform (left wrist)
Threaded Mode
