| MadSci Network: Engineering |
A golf swing is actually pretty difficult to model accurate.
I have answered a previous question: Re: How does a golf club work and what is the effects of different shafts.
The basic idea of the bubble shaft is to reduce rotational torque caused by the club head.
One manufacture of graphite shafts has a golf shop demo with two clubs with the clubheads up and the handle end affixed to the stand on the floor. One club has a shaft of a bigger radius, but other than that the material is the same. An indicator needle is fixed to the shaft so that when one twists the clubhead the needle indicates the angle of twist. The shaft of the bigger radius is much more difficult to twist. The developer's claim is that this will lead a better hit on the ball with less tendency to slice or hook caused by hitting the ball with a clubface that is twisted out or in, respectively. The radius of the shaft near the grip shrinks back down to the more standard size.
The bubble shaft is a more localized version of the same thing.
Sincerely,
Tom "Bubbles" Cull
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