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Understanding Curvature Control: The Simplified Version

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As with most golfers, controlling the curvature of the golf ball in flight tends to be the most common issue plaguing players’ consistency on a daily basis.

While there are a ton of fundamental reasons why golfers hit shots that curve off line, the simplest reason is this:

Whenever the ball curves too much, a golfer’s face-to-path ratio was too diverse.

Face-to-path ratio determines a golf ball’s spin axis, or the amount the ball will curve in the air in general. Now, I know an off-center hit coupled with the club’s gear effect can also influence the ball’s curvature, but for the sake of this article we’ll assume a center hit to make things easier to understand.

Big Curve (600)

So let’s examine the sample shot I hit above showing a big right-to-left curve:

  • My target-line is the thin white line directly over the top of the golf balls I have placed at the end of the range.
  • My path is 16 degrees from the inside to the outside as shown by the blue line.
  • My face at impact is 3.6 degrees open — with a centered hit, whenever the face is left of the club’s path the ball will curve from right to left.
  • Thus the ratio between my face (3.6 degrees open) and my path (16 in-to-out) at impact shows a difference of -12.4 degrees.
  • This ball had a spin axis of -13.6 degrees, meaning it was curving left. This is shown by the purple curving line tracing the ball in flight.

KEY: Whenever a golfer has a big difference between where their club face is pointing and where their path is going, they will tend to have a big curve (as shown in the sample shot above). In order to hit the ball with less curve, golfers need a face-to-path ratio that is very low, meaning their path and their club face are mostly going in the same direction give or take a degree or two (as shown below).

No Curve (2)

In order to hit the ball with very little curvature, golfers need a path and face angle that are more in-line!

One final thought: You can alter the alignment of your body at address to make up for a face and path relationship that are in-line but a touch too much to the right or too much to the left of your target. Please do not alter your aim while you do the drill I’m describing below.

So how do we train educate our hands and body to produce straighter golf shots with less curve? What drill can you do on the range to best learn how to control this ratio?

You want to line up square to your target-line and then make full-swings in slow motion trying to hit the ball as straight as possible. Some amount of curvature is inevitable for the majority of players, but the goal is to have the least amount of curve possible while you’re hitting theses shots.

As you make these swings, please remember to hit the same shot over and over — this means hit the ball the same distance and with the same curvature tendency each time. The better you can get at this drill, the easier it will be for you to understand and FEEL how to hit the ball straighter when you go back to hitting full speed shots!

Enjoy the process and have some fun. At worst you are designing a “B” game for yourself if your “A” game is in the tank that day!

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Tom F. Stickney II, is a specialist in Biomechanics for Golf, Physiology, and 3d Motion Analysis. He has a degree in Exercise and Fitness and has been a Director of Instruction for almost 30 years at resorts and clubs such as- The Four Seasons Punta Mita, BIGHORN Golf Club, The Club at Cordillera, The Promontory Club, and the Sandestin Golf and Beach Resort. His past and present instructional awards include the following: Golf Magazine Top 100 Teacher, Golf Digest Top 50 International Instructor, Golf Tips Top 25 Instructor, Best in State (Florida, Colorado, and California,) Top 20 Teachers Under 40, Best Young Teachers and many more. Tom is a Trackman University Master/Partner, a distinction held by less than 25 people in the world. Tom is TPI Certified- Level 1, Golf Level 2, Level 2- Power, and Level 2- Fitness and believes that you cannot reach your maximum potential as a player with out some focus on your physiology. You can reach him at [email protected] and he welcomes any questions you may have.

2 Comments

2 Comments

  1. Jakub Budaj

    Dec 21, 2013 at 7:58 pm

    Yes, Ronald. It must.

  2. Ronald Gailun

    Jul 25, 2013 at 11:43 am

    Therefore, to hit a slight draw, the club face must be slightly open to the club path?

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Wedge Guy: Short iron challenges — and a little insight (hopefully!)

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In my experience, almost all golfers could benefit from better short iron play. The ability to hit it closer to where you are looking with your 8-, 9- and P-irons will do more for your scoring than most anything else you can do. So, why is it that so many golfers just don’t hit the quality shots with these clubs that they do and should expect?

I chose this topic in response to an email from Phillip S., who wrote:

“I’m hitting straight and consistent most of the time but I’ve got a big problem between my 8-iron and everything else below.  I can hit my 8-iron 140-145 fairly consistently every time.  I hit my 9-iron somewhere between 110-135.  My pitching wedge is a mystery….it varies between 85 -125 yards.  No matter how “hard” I swing, I can’t seem to hit my short irons consistent distances.  It’s maddening to hit a great drive followed by a pitching wedge short of the green from 110 yards away.  What am I doing wrong?

Well, Phillip, don’t feel alone, because this is one of the most common golf issues I observe. It seems that the lion’s share of technology applied to golf clubs is focused on the long stuff, with drivers and hybrids getting the press. But I firmly believe that the short irons in nearly all “game improvement” designs are ill-suited for precise distance control, hitting shots on the optimum trajectory or knocking flags down. I’ve written about this a number of times, so a little trip back in Wedge Guy history should be enlightening. But here are some facts of golf club performance as applied to short iron play:

Fact #1. Short irons are much more similar to wedges than your middle irons. But almost all iron sets feature a consistent back design for cosmetic appeal on the store racks. And while that deep cavity and perimeter weight distribution certainly help you hit higher and more consistent shots with your 3- or 4- through 7-iron, as the loft gets in the 40-degree range and higher, that weight distribution is not your friend. Regardless of your skill level, short irons should be designed much more similar to wedges than to your middle irons.

Fact #2. As loft increases, perimeter weighting is less effective. Missed shots off of higher lofted clubs have less directional deviation than off of lower-lofted clubs. This is proven time and again on “Iron Byron” robotic testers.

Fact #3. It takes mass behind the ball to deliver consistent distances. Even on dead center hits, cavity back, thin-face irons do not deliver tack-driver distance control like a blade design. In my post of a couple of years ago, “The Round Club Mindset,” I urged readers to borrow blade-style short irons from a friend or assistant pro and watch the difference in trajectories and shotmaking. Do it! You will be surprised, enlightened, and most likely pleased with the results.

Fact #4. The 4.5-degree difference between irons is part of the problem. The industry has built irons around this formula forever, but every golfer who knows his distances can tell you that the full swing distance gap gets larger as the iron number increases, i.e. your gap between your 8- and 9-iron is probably larger than that between your 4- and 5-iron. Could there be some club tweaking called for here?

Fact #5. Your irons do not have to “match.” If you find through experimentation that you get better results with the blade style short irons, get some and have your whole set re-shafted to match, along with lengths and lie angles. These are the keys to true “matching” anyway.

So, Phillip, without knowing your swing or what brand of irons you play, I’m betting that the solution to your problems lies in these facts. Oh, and one more thing – regardless of short iron design, the harder you swing, the higher and shorter the shot will tend to go. That’s because it becomes harder and harder to stay ahead of the club through impact. Keep short iron shots at 80-85 percent power, lead with your left side and watch everything improve.

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Clement: Easily find your perfect backswing plane with this drill

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When you get on one of these, magic will happen! You can’t come too far inside or outside in the backswing, and you can’t have arms too deep or shallow at the top of the backswing nor can you be too laid off or across the line either! SEAMLESS!!

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Wedge Guy: The top 7 short game mistakes

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I’ve written hundreds of articles as “The Wedge Guy” and I’ve made it my life’s work to closely observe golfers and their short games. So, I thought I’d compile what I see into a list of what I believe are the most common mistakes golfers make around the greens that prevents them from optimizing their scoring. So here goes, not in any particular order:

  1. Tempo. Maybe the most common error I see is a tempo that is too quick and “jabby”. That probably comes from the misunderstood and overdone advice “accelerate through the ball.” I like to compare playing a golf hole to painting a room, and your short shots are your “trim brushes”. They determine how the finished work turns out, and a slower and more deliberate stroke delivers more precision as you get closer to the green and hole.
  2. Set Up/Posture. To hit good chips and pitches, you need to “get down”. Bend your knees a bit more and grip down on the club – it puts you closer to your work for better precision. Too many golfers I see stand up too tall and grip the club to the end.
  3. Grip Pressure. A very light grip on the club is essential to good touch and a proper release through the impact zone. Trust me, you cannot hold a golf club too lightly – your body won’t let you. Concentrate on your forearms; if you can feel any tenseness in the muscles in your forearms, you are holding on too tightly.
  4. Hand position. Watch the tour players hit short shots on TV. Their arms are hanging naturally so that their hands are very close to their upper thighs at address and through impact, but the club is not tilted up on its toe. Copy that and your short game will improve dramatically.
  5. Lack of Body/Core Rotation. When you are hitting short shots, the hands and arms have stay in front of the torso throughout the swing. If you don’t rotate your chest and shoulders back and through, you won’t develop good consistency in distance or contact.
  6. Club selection. Every pitch or chip is different, so don’t try to hit them all with the same club. I see two major errors here. Some golfers always grab the sand wedge when they miss a green. If you have lots of green to work with and don’t need that loft, a PW, 9-iron or even less will give you much better results. The other error is seen in those golfers who are “afraid” of their wedge and are trying to hit tough recoveries with 8- and 9-irons. That doesn’t work either. Go to your practice green and see what happens with different clubs, then take that knowledge to the course.
  7. Clubhead/grip relationship. This error falls into two categories. One is those golfers who forward press so much that they dramatically change the loft of the club. At address and impact the grip should be slightly ahead of the clubhead. I like to focus on the hands, rather than the club, and just think of my left hand leading my right through impact. Which brings me to the other error – allowing the clubhead to pass the hands through impact. If you let the clubhead do that, good shots just cannot happen. And that is caused by you trying to “hit” up on the ball, rather than swinging the entire club through impact.

So, there are my top 7. Obviously, there are others, but if you eliminate those, your short game will get better in a hurry.

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