Tom Wishon said he did some super high speed research a couple of years back. To my knowledge none of the photographs have been released publicly. His conclusions were that the ball does move slightly up the face as well as deform. His iron and wedge designs since appear to have more bite to them via more grippy faces as well as the groove design work.
Interesting. I've been reading about this lately and it seems the agreement is under normal dry conditions, that groove design isn't significant.
I can see how roughing the face would add friction, but I'm not convinced that Roll-up is the complete answer.
I would think you don't have to have roll up per se, just 'grip' to transfer energy into spin. You might only be using one or two grooves on any given shot for that grip, but I'd have to say grooves matter!
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I would think you don't have to have roll up per se, just 'grip' to transfer energy into spin. You might only be using one or two grooves on any given shot for that grip, but I'd have to say grooves matter!
Hmm? A 'Pool Cue' has grip. The Balls don't. I'll read more about it.
2 golfers, 50 yards off the green. Both with sand wedges. Golfer #1 hits the ball at the pin and rolls forward 10 feet. Golfer #2 hits the ball at the pin and the ball spins backward 10 feet.
What are the approximate spin rates of the two balls?
Questions:
Did they generate the same clubhead speed?
Did both Golfers accelerate through Impact?
Did clubhead path differ? (angle of attack)(angle of attack affects effective loft?)
Did one of the balls roll up the clubface more than the other?
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