Hi, first time posting in a long time. I am a playing professional, former caddie to Ryder Cup Captain, TGM enthusiast. What is all the hoopla about this D-PLANE stuff?? Seems to me it's describing what happens when you swing "off-plane", stop the pivot and let the hands do a fly-by, or when some other rusted machine part breaks down. Any thoughts would be great. I see Mr. Manzella thinks it's better than sliced bread!! And Tracman??? How can this be a Godsend to teaching? It seem to show results of the shots like no other, but can it teach someone lag and compression?? I'm gonna have to say NO. I mean, my wife KNOWS when I miss a fairway!! BE well
It only lands on the Island once a week and is announced by Tattoo ringing the bell in the main tower. When the guests arrive on Fantasy Island they are greeted by a short, fat guy in a golf cart.
Personally I have no idea what other meanings are.
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Bagger
1-H "Because of questions of all kinds, reams of additional detail must be made available - but separately, and probably endlessly." Homer Kelly
D-Plane is a fairly complex examination of the "new" ball flight laws that say the ball starts approx. 85% due to the face direction at separation. For years we were taught that the path was responsible for starting direction. To really take advantage of D-Plane you need to be on a TrackMan to test several variables.
As followers of Homer Kelley, we have it easy and really don't need to change our thinking. Homer Kelley tells us in Chapter 2 -D-0:
Quote:
The direction of the ball will always be practically at right angles to the Clubface and square to the leading edge of the Clubface at separation
We know the ball curves because of a variance in face angle to path.
Thats all I need to know to teach and play G.O.L.F. !
Kevin
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I could be wrong. I have been before, and will be again.
Bagger, thats funny!! Thanks for the explanation. To me, that's a logical explanation. Now, I wanna watch some Re-runs. Hey, maybe "Good Times", too. DDYYYYYYYYYYNNNOMIIIIITTEEE!!!
The D Plane was included in Theodore Jorgensen's book "The Physics of Golf" and for many years was basically overlooked by most. It is an explanation of the effect that the path of the clubhead and clubface have on the flight of the ball. The debate was brought up during a TGM Summit a few years ago with Dr. Aaron Zick. With the explaination he gave it opened up discussion about the old ball flight laws and their validity.
D-Plane is a fairly complex examination of the "new" ball flight laws that say the ball starts approx. 85% due to the face direction at separation. For years we were taught that the path was responsible for starting direction. To really take advantage of D-Plane you need to be on a TrackMan to test several variables.
As followers of Homer Kelley, we have it easy and really don't need to change our thinking. Homer Kelley tells us in Chapter 2 -D-0:
We know the ball curves because of a variance in face angle to path.
Thats all I need to know to teach and play G.O.L.F. !
Kevin
Nice one Kev.
"Approx 85% " and Mr Kelley's "practically at right angles to the ..." Do they refer to the same thing?
There is a lot of math given the variables to be more precise Id imagine. I remember a story of Homer discussing this issue and proclaiming that golf should not be played on course with a protractor, not by the guys he was talking to anyways. Which means to me that, for research , practice etc its ok but not something to fret about on the golf course. Heck there were a lot of majors won by guys operating under (and unknowingly compensating for) the old backassward rules , so not fussing over the last 15% seems like good advice. Given enough experience you'll get it accounted for without thinking about it maybe.
I havent given much thought to Dplane. But Id imagine doing the calculations and adjusting the clubface angle by a few degrees or whatever would drive me nuts. Get me thinking about the wrong stuff. Distract me like the guy I got paired up with yesterday that was always telling me where the trouble was..... just as I was getting over the ball. My brother can be a real Earl Woods sometimes. His velcro always seems to give him some trouble too , just prior to Startup, my freakin startup. Hah we stomp around like Seve and Zinger sometimes.
Yeah, there is not much funnier than a pro-am partner saying "don't hit it left here or there's water right". REALLY, CAPTAIN OBVIOUS!!??!! It's hard for them to grasp the concept of focusing on 'what you want' and NOT on 'what you don't want'. The mind is most powerful!!
"Approx 85% " and Mr Kelley's "practically at right angles to the ..." Do they refer to the same thing?
It looks and quacks like a duck to me O.B. You know what that means? It must be a duck!
What do you think my friend? That's how I read it... If the PGA would have brought Homer Kelley on board way back in the 70's, we wouldn't be having this conversation!
Kevin
__________________
I could be wrong. I have been before, and will be again.
The D Plane also has a reference to 2-N-0 Clubhead Line of Flight. "The Line of Flight of the Clubhead and the Line of Flight of the Ball are not the same but touch momentarily during Impact." "This line cuts diagonally across the face of the Inclined Plane and passes through both the Imapct Point and the Low Point. These points also locate parallel Plane Lines passing through them - that is, the Impact Plane Line and the Low Point Plane Line, each of which must use the "Sweet Spot" Plane (2-F). Later on in 2-N-0 Mr. Kelley explains how ball positionrelative to Low Point can affect the Angle of Approach. For too many years I would always pull my short irons and never knew why. Now that I better understand the effect of downward on outward (elements of D Plane) I now know why I need to aim further left with the shots that I hit down more one and more right on shots I hit from a ball position closer to low point. Also the "85%" is not the set standard of deviation. Loft and swing speed also play a role in this calculation. Remember, and I may not have this quote exact but Homer did say that, "only those who know how precise it can be know how precise it must be."
Hi, first time posting in a long time. I am a playing professional, former caddie to Ryder Cup Captain, TGM enthusiast.
Good to hear from you, Right Now. And would you now be carrying for a very long, left-handed bomber of the ball? Or is that in the recent past, and are you now pursuing your playing career? Or, have I just got the wrong guy?
Hybrid Mode
