Mankin

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Jan 6, 2009
6,577
113
Chehalis, Wa
Mankin was the first to say you must understand and apply mechanics throughout the entire swing. Throughout the entire arc of the swing. His research was ground breaking and what is being taught now is a direct result of his research. His videos aren't really good at explaining or how to apply his research. That said, his website forum did explain it.
 
Jan 6, 2009
6,577
113
Chehalis, Wa
Despite HI claiming he discovered the early arcing in his video. Mankin was the first to explain early batspeed. It created much talking about what is happening throughout the entire swing.

Mankin was also the first to describe the oarlock effect in the swing as well. All this "new" info can be traced back to Mankin.
 
Jul 16, 2013
4,659
113
Pennsylvania
Interesting post on Mankin's site from 2007...

Paul's third simulation, where he attempts to show the effect on the bat's trajectory from adding torque, is highly misleading. It also demonstrates his lack of understanding of the principles involved in applying torque at the handle.

For torque applied at the handle to induce rotation about a point (between the hands), only the vectored forces applied by the hands that are perpendicular to the length of the bat are a factor. When the forces of both hands are directed down the length of the bat, as in Paul's simulation, there are no force vectors that are perpendicular to the length of the bat and therefore, as the swing is being initiated, no torque is being applied at the handle.

As his simulation shows, torque is not a factor in inducing bat rotation until the bat has rotated so that the directional force of the hands are no longer inline with the length of the bat. In his simulation, this does not occur to any appreciable degree until the bat rotated 30+ degrees. -- As an example: when the length of the bat has rotated 45 degrees, about half of the vectored force of the hands are directed down its� length and half are directed perpendicular to the handle. With this simulation, maximum torque is not realized until the bat's length approaches 90 degrees to the forces applied by the hands.

Instead of Paul calling this a simulation of THT, it would have been more accurate to label it "Knob to the Ball." With knob to the ball, the forces of the hands are directed down the length of the bat and good bat speed is not attained until late in the swing.

With THT, the force of the top-hand is not driving forward as his simulation shows. The top-hand is pulling rearward and perpendicular to the bat's length. With efficient transfer mechanics, the direction of forces of the hands are always opposing and remain directed perpendicular to the handle from initiations to contact -- torque applied throughout the swing.

For those not familiar with Jack Mankin. The Paul he is referring to in this quote is Paul Nyman.
 
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