[6bmike]

Thanks for the reply drewitgolf, however i must admit i'm more confused now.

I understand extensor action to be trying to straighten the right arm which results in stretching the left. To do this the right tricep has to be contracted so surely tension in the right arm is inherent to extensor action. This leads to my question, if a swinger allows centrifugal force to straighten the right elbow how can a swinger also use extensor action?

The left arm is the leash and the right arm is the pulling dog. It pulls in a linear line, it does not move or lift the left arm. The right arm ends its pulling when the leash- the left arm- ends- it runs out becomes spent. On the downstroke, this linear tugging also does not move the arm since its only direction of the force is in a straight line outward along the left arm flying wedge. There should be no tension in the left arm stroke.