Tiger "no deflection" shaft

Yes, certain phenomena do occur as you guys describe them even with perfect stroking of the CB, I'm talking about the practical result.
A video of it would be better for demonstration, I'll try to get it in the future.
 
I imagine all he was doing was bridging at the shaft's natural pivot length, lining up the shot straight on, then pivoting to apply back-hand english. The shaft still produces CB squirt, but the BHE technique compensates for it.

I think that is what I've been doing all my life....
..I address everything center-ball, when I can, and then re-direct the tip.

Why don't these LD shaft people just use the phrase 'user-friendly'..?
..'cause that's what it is.
 
Sorry, Mr. Jewett, this doesn't hold up to the laws of conservation of momentum.

The forces are the same regardless of whether the tip moves independently or not. Eventually those forces have to be resolved by the shaft.

dld
I think that's not correct. The reason we have squirt is that the front of the stick is forced to move to the side by the rotation of the cue ball while the tip is on the cue ball. The cue ball has to move in the other direction to conserve momentum. If you can avoid the shaft being pushed to the side by the rotation you will not have squirt.

If anyone is interested in understanding the physics better, here is Ron Shepard's paper on squirt: http://www.sfbilliards.com/Shepard_squirt.pdf and here is a brief summary of it: http://www.sfbilliards.com/sqrt.htm

In the old days billiards physics was regularly covered in college text books on "dynamics". The simplifying assumption usually made in those books was that you could think of the impact of the cue stick as the same as striking the cue ball instantaneously on a plane through the center of the cue ball and perpendicular to the cue stick. That is much simpler to analyze since there is no rotation of the tip but it makes squirt disappear. All of the conservation equations work fine and you get the expected spins and slowing and the rest, but you have no squirt.
 
... The shaft will deflect because it has to resolve the forces of the tip moving.

The only way to avoid squirt and deflection is to have an object without mass hitting the cueball.

dld
Well, no. That's why I brought up the point of "spring loaded." If the cue stick exerts it's own force on the tip -- possible with a triggered spring or some other clever contraption -- away from the cue ball, the momentum that would normally go into the cue ball to allow the tip to move away from the center of the shot would instead be transferred into the cue stick. You could make a negative-squirt stick this way if the spring were too strong. I'm not saying it's practical, but I don't think it can be proven impractical. And maybe there is a way to do it that wouldn't bring down the equipment regulations enforcers on your neck.
 
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