Frans@France
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No, initial is really initial like in "when the ball is not in contact with the face anymore". Not like "I hit a 400 yards shot and initial is till 250yard when the ball start to fall "
Understanding impact
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No, initial is really initial like in "when the ball is not in contact with the face anymore". Not like "I hit a 400 yards shot and initial is till 250yard when the ball start to fall "
tongzilla
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I think it's longer than that...anyone have some facts?
Frans@France
New
No it's not and you are aware I'm just quoting Jorgensen and this book "The physics of Golf" that is still available for you to buy and read?
Why do you feel that golf ball core reactions, core(s) & outer shell behaviour, ball rebouncing back to initial size, coefficient of drag, coefficient of lift, velocity change (z&y directions) (all those nice things that define the ball trajectory) AFTER impact should all be part of your d-plane definition?
The IMPACT INTERVAL is .00045 second
The BALL gets its marching orders from the clubhead near the middle of the interval, around .00023
The CLUB can twist during the interval.
The BALL spin axis is programmed from Clubface Normal near the middle of the interval (which will be different than Clubface Normal at
first touch) and the 3D path of the center of mass of the clubhead.
Exactly that and nothing more
birly-shirly
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I wouldn't have thought so. I've heard it described that way before, but what force would act on the ball during a toe hit to cause the ball to move towards the clubhead's CoG? If anything, a clubface that's twisted open is going to deflect the ball towards the toe.
From the point of view of imparting "sidespin", I'd guess that the ball moving relative to the clubface is much the same thing as the clubface moving relative to the ball - but I think that gear effect is the latter.
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