2 seam VS 4 seam fastballs/disadvantage?
- Thread starter KneeHighSocks
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The Magnus Force occurs when a ball has an axis of rotation perpendicular to the direction of motion. In the example I used, it was bullet spin/corkscrew spin. For that pitch, if the corkscrew spin and the direction of movement are co-linear, there is no Magnus force.
But, your DD is throwing a pitch with 12-6 topspin. If the axis of rotation is perpendicular to the direction of movement of the ball, then there is simply a drop ball.
As the axis of rotation moves on a horizontal plane, the downward force on the ball due to the Magnus force decreases because the rotational axis is no longer perfectly perpendicular to the direction of movement. *BUT*, the ball moves horizontally due to the orientation of the seams.
I suspect that on most pitches the rotational axis is rotated horizontally and vertically. In that case, the ball ends up having a vertical Magnus force, a horizontal Magnus force, and a seam orientation force.
My guess is that it is a very difficult pitch to control.
But, your DD is throwing a pitch with 12-6 topspin. If the axis of rotation is perpendicular to the direction of movement of the ball, then there is simply a drop ball.
As the axis of rotation moves on a horizontal plane, the downward force on the ball due to the Magnus force decreases because the rotational axis is no longer perfectly perpendicular to the direction of movement. *BUT*, the ball moves horizontally due to the orientation of the seams.
I suspect that on most pitches the rotational axis is rotated horizontally and vertically. In that case, the ball ends up having a vertical Magnus force, a horizontal Magnus force, and a seam orientation force.
My guess is that it is a very difficult pitch to control.
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Thank You...I can agree on that... DD's case... Yes very hard for hitters to control... You gotta split the pumpkin dead center & I mean DEAD CENTER...
Get lotz more pop-ups to catcher, than most other pitches.
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WOW... first BB game I watched in at least 4yrs.... Of course I'm salty about pulling him, and not letting him get Double Digit K's
Kluber's movement was nasty! How many LH batters bailed out and gave up on a pitch only to have the ball come back and hit well into the plate? That is down-right filthy from a RH pitcher.
Really... 1200fps+... Wanted to see what I could do ??? can barely make out the seams... Shot this in AV... easy to track ball ...TV does much better @ seeing seams. Wanted to show sluggers a 2Seam climbing to plate...cutting 3' w/ 28rps...w/12/6.... inconclusive
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Could be wrong...might have been the perfect 9/3 no one has seen....
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