Print this out and turn upside down for Players View. Average Club: Impact 4" behind Low Point.
Im still wondering. Straight shot or Draw? Maybe we have to assume a Hinge Action.......so lets say Horizontal and Arc of Approach, manipulated hands swinging or Hitting. I was initially thinking straight cause its not an inside out stroke but now I honestly dont know.
If the club head closes and the impact point doesn't move from contact to separation, the ball will "close" too. It will rotate the same way as the club face did during impact. And there you have the draw.
If you hit the ball human-like and produce a fade, there's o way you can keep the impact point on the ball fixed during the release interval. Perfect ball compression and a fade would require reverse horizontal hinging.
Daryl,
Can you elaborate on what you mean by "Centrifugal Force will always Swivel the Clubface Square to the Longitudinal Center of Gravity of the Club."
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Daryl,
Can you elaborate on what you mean by "Centrifugal Force will always Swivel the Clubface Square to the Longitudinal Center of Gravity of the Club."
Background:
There are three Clubface Alignments. We're concerned mostly with 2.
Pivot, Turn and Roll: Opening or Closing the Face to the Plane Line
Hooding and Layback: Swivel (Technically it's not hooding and Layback but I don't have the words, but over-swivel/under-swivel doesn't explain much)
A Swivel is a Rotation of the Toe of the Clubface and Heel of the Clubface around the Sweetspot on the Clubface. Simply stated, it’s the Toe and Clubshaft Rotating around the Sweetspot.
The Sweetspot Plane is the longitudinal center of gravity of the Golf club. It’s an invisible line that connects the Sweetspot on the Clubface up through the top Right side (ideally) of the Golf club grip (because of the forward leaning shaft).
Simple Experiments: These are "Swivel"
Hang a Club from its grip. Twist it and let go. The Club will recenter itself (Swivel).
Tape 3 pennies to the heel of a 9 iron. It changes the Heel/Toe weighting and will re-orientate the Clubface accordingly.
Buy an Adjustable Weighted Driver. Play with the Screws.
My intention while addressing the Swivel issue during a discussion or Fades and Draws, is that CF will Orientate the Clubface (Hood-Layback) while the Player moves the Ball Location Fore and Aft for Plane Line/Target Line (Pivot Turn and Roll). This controls trajectory on Fades and Draws. But more important, it's integral to sustaining the Line of Compression during all three procedures, Closed, Open and Square Plane Line relative to the Target Line.
If the club head closes and the impact point doesn't move from contact to separation, the ball will "close" too. It will rotate the same way as the club face did during impact. And there you have the draw.
I can picture what you mean but, picking some numbers from the top of my head, if impact interval is 0.1 sec and the clubhead closes 3 deg in that interval, then the clubface/ball is rotating at 5 rpm. Is that small rotation enough to cause a Venturi/Magnus effect to cause a draw? Even if I am off by an order of magnitude and impact interval is 0.01 sec, then rpm is 50. Same question. I would think that hundreds or even thousands of RPMs would be needed to cause the ball to curve.
I believe that the line of compression, relative to the vertical centre line of the ball is what will determine the amount or absence of curve.
It will probably just be draw-ish. Perhaps it makes a slight difference to where the ball goes when it bites the green. Perhaps it makes a small trajectory difference with a driver and not with a middle iron. Don't know really, but I guess it is practically straight.
Personally I like to see a hint of a draw in my stock shots. If I also see a divot that is reasonably shallow I know that the ball compression is good.
Hybrid Mode
