Flex #s

[Bruce Caldwell]

Yes when you jack handgrip up to get on a longer pole you are increasing the length of the pole swing so the vaulter swing better swing fast to time or you will land in the box.
IT is call the double pendulum
shorter the pendulum the faster the swing
the pole is one pendulum and the vaulter is the other!!

[zack]

Yes, they will require about the same amount of force to bend if you're gripping both poles say 6" from the top, BUT, where people f*** this up is that they don't realize that jacking their grip up to the same distance from the top on the next length f*** up the whole pole-speed equation. Even 1 inch of grip changes the pole-speed dynamic in a jump, and when moving to the next length, you should grip the same height from the BOTTOM of the pole with your top hand, or like 1" more. If you just jack your grip up 6" to a foot, you're asking to get your dumb a** spanked back down on the runway.

Its amazing how some people never figure that out.