Posted by: Bob (bburnett15@verizon.net) on Thu Mar 3 17:52:58 2011

Thanks Jack!
Dr Russell has some great research there.

> Hi Bob
>
> If I remember correctly, Adair's book (The Physics of Baseball) does mention the bat/ball collisions figures you state. I have also read bat/ball collision test results from different bat manufactures that supports numbers in that range. Dr. Drussell has written a number of papers on this topic. I will place below a link to one of his reports that addresses the short duration of the bat/ball collision time and its effect on grip tension. -- His conclusion states, "Final batted-ball speed does NOT matter how you grip the bat"
>
> <a href="Insert_Addresshttp://paws.kettering.edu/~drussell/bats-new/grip.html">Bat/ball collision Test</a>
>
> Jack Mankin