Bat Speed -- Baseball Hitting Forum

Posted by: BULLDOG (pbstv@toast2.net) on Fri Mar 21 17:24:50 2008

BAT BARREL SEPARATION SPEED CRITICAL
Being a student on girls’ softball, also men and ladies golf, a major concern is bat speed when the ball decompresses and is thrown (separates) from the bat/golf club. Girls softball because of the power of the girls to within stand impact of the heavy softball and in golf because the ball is not pitched.

(From the golfing machine by Homer Kelly, The proportion for the separation rate to the approach rate express the elasticity involved, and is called the Coefficient of Restitution which is 80% for the better golf balls—but drops below 70% at high speeds.) This would be with a dead center hit not above or below the center of the bat or ball.

Dropping a fast pitch softball and a golf ball on concrete the softball bounce is about 50% of the golf ball. Then the softball’s Coefficient of Restitution must be about 40 %.

The faster the pitch the more brace and power the batter must have. With girls if the bat is not connected (Arms close to body) the impact force will do the following to the bat: stop barrel: shove barrel up (ball down): shove barrel down (ball up). I have video of this from the local teams to USA World cup teams. Just think if you throw a rotating bat at a ball and it makes perfect solid contact how far will the ball go?

How well can slim wrists withstand the impact forces? To me that is a reason to have maximum bat speed at impact with the impact as deep as possible. To me the deeper impact occurs the more braced the arms/bat are, and the less barrel defection up, down, or rearward. That equals more solid contact up or down and more barrel speed at ball separation.

Measuring ball speed hit from a tee would be the best way to measure power of the swing.

In golf many amateurs have a lot more club head speed than the pros at impact but lose too much clubhead speed from impact.

This is my humble opinion. 15 yrs retirement studying the golf swing. 7 years following 5 granddaughters softball swings.

Bulldog

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> BAT BARREL SEPARATION SPEED CRITICAL
> Being a student on girls’ softball, also men and ladies golf, a major concern is bat speed when the ball decompresses and is thrown (separates) from the bat/golf club.  Girls softball because of the power of the girls to within stand impact of the heavy softball and in golf because the ball is not pitched.
> 
> (From the golfing machine by Homer Kelly,  The proportion for the separation rate to the approach rate express the elasticity involved, and is called the Coefficient of Restitution which is 80% for the better golf balls—but drops below 70% at high speeds.)  This would be with a dead center hit not above or below the center of the bat or ball.
> 
> Dropping a fast pitch softball and a golf ball on concrete the softball bounce is about 50% of the golf ball.  Then the softball’s Coefficient of Restitution must be about 40 %.
> 
> The faster the pitch the more brace and power the batter must have.  With girls if the bat is not connected (Arms close to body) the impact force will do the following to the bat: stop barrel:  shove barrel up (ball down):  shove barrel down (ball up).  I have video of this from the local teams to USA World cup teams.  Just think if you throw a rotating bat at a ball and it makes perfect solid contact how far will the ball go?
> 
> How well can slim wrists withstand the impact forces?  To me that is a reason to have maximum bat speed at impact with the impact as deep as possible.  To me the deeper impact occurs the more braced the arms/bat are, and the less barrel defection up, down, or rearward.  That equals more solid contact up or down and more barrel speed at ball separation.
> 
> Measuring ball speed hit from a tee would be the best way to measure power of the swing.
> 
> In golf many amateurs have a lot more club head speed than the pros at impact but lose too much clubhead speed from impact.
> 
> This is my humble opinion.  15 yrs retirement studying the golf swing.  7 years following 5 granddaughters softball swings. 
> 
> Bulldog

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