- Oct 12, 2009
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FRAME 51 is closer to when LEAD/BOTTOM wrist uncocks/ADducts (unhinges/widens hinge angle) prior to contact while top hand/rear wrist (right hand for right handed batter) remains "set"/cocked until later as angle at rear elbow widens from triceps extension
Frame 51 is where the hitter stops worrying about holding the hinge angle and releases the bat head.
Physics take over from here.