OK.... Here's what I want you to do... Go to your wife's sewing kit and get some thread (yard will do), Go to your garage and get a small nail a hammer and a heavy hex nut. Find someplace comfortable and pull up a chair. Take your hammer and tap that nail in to the edge of a table or something (must be open below). Now take your thread and tie one end to the hex nut. Take the other end of the thread in you index finger and drape the thread over the nail.
Now you've got a simple pendulum.
Go ahead let the nut swing... notice how the period (TIME IT TAKES FOR A CYCLE TO COMPLETE) changes depending on how long the thread from the nail to the nut is? Now here's what were gonna do. Were going to learn to PUMP IT UP (like Tiger and Saldawski and they all do).
I want you to TUG on the string (not much) ... just give it a gentle tug with each osscilation. Tug up as the nut swings down and let it out again as its swinging up.. just little tugs..... Keep repeating.
What happens?
Thats right....when you do this you're pumping energy into the pendulum... you're making it swing higher with each tug and the club head speed (er.. nut velocity) gets faster.
Now do the opposite... Tug up when the nuts is moving up... let out when the nut is moving down. The pendulum slows down doesn't it....
So what h*** does this have to do with golf? Its that old radius thingy (again). You need a shortening swing radius to pump up you club head speed.
Threaded Mode
