D-Plane refresher

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honez1414

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Based on D-plane all these descriptions of ball flights should be wrong. I'm trying to understand and give the correct ball flight. Call it a self-quiz and I would like the forum to correct me when I'm wrong and I'm sure I will be. I'm not looking to get too technical but would like to be able to learn from my ballflight while on the range or course.



Nine Ball Flights and Results
(Target Line constant)

1. Swing Path straight, clubhead square - ball will start straight and continue straight. Good straight shot.
2. Swing Path straight, clubhead open - ball will start straight and then curve to the right. Fault - clubhead open at impact. Result - slice.
3. Swing path straight, clubhead closed - ball will start straight and then curve to the left. Fault - clubhead closed at impact. Result - hook.
4. Swing path inside out, clubhead square to path - ball will start to the right and continue on a straight line to the right (no curve). Fault - Inside out swing with body not turned to target. Result - Block Push
5. Swing path inside out, clubhead open to path - ball will start to the right and curve further to right (slicing). Fault - Inside out swing with body not turned to target and open clubface. Result - Block Slice
6. Swing path inside out, clubhead closed to path - ball will start to the right and curve back to target (hooking). Fault - Inside out swing with clubhead closed at impact. Result - right to left draw.
7. Swing path outside in, clubhead square to path - ball will start to the left and continue on a straight line to the left (no curve). Fault - Outside in swinging motion (Over the top). Result - Pull
8. Swing path outside in, with clubhead open to path - ball will start to the left and curve back to target (slicing). Fault - Outside in swinging motion (Over the top) with clubhead open. Result - Pull Slice.
9. Swing path outside in, with clubhead closed to path - ball will start to the left and curve further to the left. Fault - Outside in swinging motion (Over the top) with clubhead closed. Result - Pull Hook.

New Rules (second guess assumes iron with low point forward of ball)
1. I'm gonna guess a slight pull with no curve Or is this a bit of a pull draw assuming low point is forward of ball resulting in a true in to out path?
2. small push Or small draw curving in to target?
3. big pull much more than #1 with no curve Or big pull draw


Starts getting very confusing if you assume low point forward of ball so I'll stop there before i make too big a mess. And I would like to assume that I'm striking the ball correctly with my irons. I take a divot forward of the ball. I know it's limited information. Many of you would like to know how many degrees open/closed for the face and swing path including AoA but in the simplest terms am I near correct?

I would also like for someone to give ball flights for a driver teed up with impact on a slight upswing.


Thanks,
Jonathan
 
Richie3Jack

Richie3Jack

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You're close, but clubface controls about 85% of the initial direction, club path controls the other 15%.

2. Swing Path straight, clubhead open - ball will start straight and then curve to the right. Fault - clubhead open at impact. Result - slice
Click to expand...

So for here, the ball will start out to the right (depending on just how open the face is to the target) and then slice to some degree. More of a block fade/block slice here. The same applies to the rest.

6. Swing path inside out, clubhead closed to path - ball will start to the right and curve back to target (hooking). Fault - Inside out swing with clubhead closed at impact. Result - right to left draw.
Click to expand...

Depends on how closed to the path it is. It could be a square face to the target, but with the inside-to-out path, still be 'closed to path.' It could also be an open face to the target and still be closed to the path if the path is inside-to-out enough.

For the ball to start right and then curve back, the face likely has to be open to the target to some degree and the path has to be in-to-out in relation to the face. If the face is closed to the target and the path is in-to-out, now you're looking at a snap hook.




3JACK
 
Richie3Jack

Richie3Jack

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savydan said:
Does it matter how much downward strike he is assuming? I.E. 2 degrees down vs. 10 degrees down?
Click to expand...

Yes, but I still struggle to figure that out when the clubface is not square to the target.

10* downward is a lot. That's steep for a SW.



3JACK
 
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honez1414

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Am i that far off? I thought the red was old ball flight laws? And I thought swing path straight (or in-to-in) with clubface open assuming downward strike would cause a ball to start right of the target based on the face being open to the path and then draw because a downward strike meant true path was a little in to out.
 
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savydan

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dbl said:
Honez, the red in the OP are the old outdated ball flight laws. Are you looking for people to rewrite these for you to fit the d-plane versions? Why don't you take a stab at it?

Here's some meat to get you started:
http://www.brianmanzella.com/forum/...flight-laws-250-definition-d-plane-bmanz.html
Click to expand...

Good find. The Trackman definitions and sign conventions (plus and minus) and the New Ball Flight laws should be a Sticky thread with 1 good summary post.

Also, notice Brian's 3rd to last sentence in your link. That would make the Red #1 law above have the ball start towards the target and hook. A big wake-up call from the old ball flight laws.
 
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