Mabramb,
See 6-B-1-D.
Extensor action produces a structural rigidity that is a strong deterrent to collapse under the stresses of acceleration and impact. What a great quote from Mr. Kelley and unknown to most of the golfing world outside TGM. Ever heard keep your left arm straight, have good extension, release the club (the non tgm release), these golf without the periods tidbits are all the layman's way of trying to get extensor action. They don't know what it is but they seek it, they don't know how to accomplish it, so they try a myriad of things that don't usually last very long. Once you discover extensor action, you will understand its importance.
In 12-3-0, the mechanical checklist for all strokes, exstensor action appears in every section except for preliminary address, adjusted address and the finish, that should let you know how important Mr. Kelley thought it was.
Todd
Thanks Todd. To be clear let me ask you... is extensor action the principle of having a straight left arm throughout the swing by means of extending (continuously) the right arm to insure it remains straight? So is that to say that attempting to keep the left arm straight by using the left arm as the means to do so is an impractical and ineffective way of doing it (am I making any sense?)?
The obvious thing for most anyone trying to accomplish a straight left arm would be just to focus on doing that so there must be benefit to using the right arm.
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