[nuke99]

In a left arm swing, the right arm push.
In a right arm swing, the right arm Swings around the right elbow and the left swing along with it, and flat left wrist is no longer an imperative...

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So....

Anything which allow CF throwout is swinging or works like a sling. Allow the assembly to work like a Flail. True swinger.

And another side of the extreme , true hitter. Muscular drive out. True hitter.


Then there is somewhere in between. This is where its a little Grey...

IMPO. As long as the right, forearm supports the secondary assembly , CF throwout in the picture, left arm have 2 hinges and pulled like a rope. if the forearm supports Primary assembly, there is no way to get CF throwout and the left arm becomes a brick wall as there is only one hinge.

and if this"passive" extensor action pulls the PP 1+3 , I believe the extensor action is more "active" than the extensor action just pulling via pp 3 ..

7-3 explains of such combination of extensor action. Merely on PP3 will have extreme " throwaway" . Thus with PP 1 + PP3 could be preferred on full swing ,

PP1 an PP3 pulling of extensor action, will have effect on how to setup the Flail. thus create different type of Slinging action. but both are swinging...
one look more softer and wristy with more "throw'. one look more powerful with more "drive". 7-3 right forearm have to be thrown or driven .