I love how recent this referenced discussion was.
Epstein says: I have written extensively about the position of the hands and arms at contact in the Collegiate Baseball News. The information is there for any interested party to read. However, one of the reasons why I DON’T spend much time on this swing segment is because - if the technique is correct up to that point - very little should go awry thereafter. Productive hitting starts with the feet and works upward from there. If the player correctly begins the technique, gets to the torque position in his stride, gets his hands to the proper launch position on time, then when he drops his heel to initiate hip rotation and his ensuing swing, assuming his timing is correct, his hands and arms SHOULD follow his body’s rotation in a circular path around his axis.
(Whew! Hope you all were able to follow me on that one.)
Epstein says: I put little emphasis on the hands,
Epstein says: because when I instruct, I find that the player will become too hands-conscious. When a player becomes too hands-conscious, he begins to “lose” his lower body, and becomes an upper-body, hands and arms hitter.
Epstein says: People will ask me about “top hand torque” and its importance in the swing. I think Jack Mankin has been very effective explaining it. It IS important, and Jack should be commended for the thoughtful explanation he has put forth.
But I personally do not believe it is something one has to “work on” to be an effective hitter. I say this because a hitter’s bat MUST FLATTEN OUT before he launches his swing.
Epstein says: This flattening-out process is a top-hand torquing movement and is a natural part of the good rotational swing. It should seamlessly bridge the gap from the torque segment of the swing to the launch phase.
Epstein says: My experience has been that if I tutor a player to concentrate on hand torquing, over a period of time it can get away from the player. When this happens, he develops a long swing which negatively impacts his timing.
Mike Epstein writes "another torque is the result of the hitter quickly flattening out his hands as he launches the swing. The hands flatten as top hand pulls down and the bottom hand pulls up. These two diametrically-opposed forces work on the bat, producing torque. This also has an enhancing effect on bat speed and potential power, and is the result of the hands flattening out as the swing launches."
Concerning Candrea's RVP CD, I think he sends conflicting signals in regard to the throwing action. On one hand, he is careful to note not to let the elbow of the top hand/arm lead in an excessive manner - causing bat drag. But then he demo's sidearm throwing drills using the top hand that clearly shows what you do NOT want in the swing, leading to contact with the back elbow. I'd rather stick with his warning not to lead that elbow.