杆头；尺寸；容积及惯性力矩（Clubhead；Dimensions, Volume and Moment of Inertia） 杆头；弹簧效应及动力性能（Clubhead；Spring Effect and Dynamic Properties） 在果岭上，你得标示、捡起及擦拭你的球，而总是将它置回确切的地点。（规则16-1b） .
With fulcrum at end of shaft , the center of gravity is changed and clubhead feels much heavier.
由于支点的杆柄末端，重心的改变使杆头感觉更重。
2
Let the club come on up, keeping your elbows in front of your body, to the top of your back-swing, where the clubhead will be point almost to the ground.