The technology of golf is relatively complex, and it is difficult to master it proficiently. Players’ movements are unstable when they first learn, and they are more likely to suffer from various unfavorable situations such as missing the golf ball and missing the target. The main direction of club design is to help players resist such situations. Flexible application of these basic knowledge can be of certain help in the understanding and selection of clubs.
Explanation of exclusive terms for golf equipment:
1. Hitting area – the area of the club face that can be hit. The larger the hitting area, the greater the chance of hitting the ball.
2. The sweet point of the club head (Sweet Point) – The sweet point is a concept that can be understood as the effective hitting area within the hitable area. When you use a certain point on the club face to make contact with the ball, it can fly the furthest distance. This point is called the sweet point of the club face. If the distance hit by this point is 100%, then other clubface parts around this point, if the same swing conditions and other hitting variables are fixed, can hit 95% distance with a deviation of less than 5% left and right. . (color part in the picture)
3. Club loft (loft) – After hitting the ball, the flight distance of the ball in the air is the most important factor in determining the hitting distance. According to the parabolic principle, choosing a larger club face angle within a certain range will help The time the ball travels in the air, and for most beginners, this means the distance it travels. The loft angle is the angle formed by the club face and the center line of the shaft. The greater the loft angle, the higher the trajectory of the ball.
4. Shaft hardness (Flex) – The softer the shaft, the more elastic it will be, which will help increase distance, but if it is too soft, it will lead to unstable flight. For beginners, within the appropriate range, they should try to choose a softer shaft. At this stage, distance is more practical than stability.
Usually L stands for ladies hardness, R stands for standard hardness, SR stands for hard, S stands for hard, and X stands for extra hard; steel shafts are harder than carbon shafts.
5. The bending point of the shaft – the point where the shaft deforms the most when it is bent under force is called the bending point (arrow in the figure below). The break point on the shaft that is close to the club head is called the low break point, the break point that is close to the grip is called the high break point, and the one in between is the mid break point. The break point mainly affects the height of the ballistics. The lower the breakpoint, the higher the ballistics.
6. Lie Angle – Place the club naturally on the ground, and the angle formed by the shaft and the horizontal plane is called the lie angle (in the picture below). If the shaft is too long and the landing angle is too small, the ballistic trajectory will tend to bend left (left in the picture below). On the contrary, if the shaft is too short and the landing angle will be too large, the ballistic trajectory will tend to curve right (right in the picture below).
7. Swing Weight – A measurement standard of the weight of the club head felt from the end of the grip, used to express the actual weight of the club felt during the swing. The weight, length and weight distribution of the club, etc. all affect the balance weight of the club.
The expression unit of balance weight is letters plus numbers. The later the letter and the larger the number, the greater the weight. For example, DO is lighter than D1, but heavier than C9. The lighter the weight, the easier the swing will be, but the heavier the weight balance, the better it will allow advanced players to feel the position of the club head, which will help adjust their movements.
8. Center of gravity of the club head – The center of gravity of the club head is also a concept in physics. The design can affect the position of the center of gravity of the club head. The lower and further the center of gravity is, the greater the sweet spot on the club face. At the same time, during the swing process The greater the actual clubface angle. (red dot in the picture)
9. Bounce – refers to the counterclockwise angle between the bottom of the club head and the horizontal line.
Scoop’s entry angle refers to the clockwise angle between the bottom and the horizontal line. The greater the rebound angle, the greater the entry angle;
When hitting the ball on hard ground (fairway or bunker), when the rebound angle (cut-in angle) is large, the club bottom cannot pass smoothly, so that the sweet spot of the club face cannot make perfect contact with the ball, often causing the club bottom or the lower edge of the club face to contact ball, resulting in a turnover.
When hitting the ball on soft ground (fairway or bunker) and the rebound angle (entry angle) is small, the club bottom can pass smoothly, but it usually results in hitting the ball too deep, with the upper edge of the club hitting the ball or the club head sliding past the bottom of the ball. , leading to errors.
Knowledge answers:
Q: I am often unsure of the playing surface. How should I choose the appropriate bounce angle?
A: Usually after rain or cold weather, bunkers or fairways will become hard. Professional golfers will ask technicians to adjust the rebound angle based on changes in the venue before the game. For amateur golfers, it is recommended to choose two contrasting rebound angles (for example: 54 degrees, rebound angle 8 degrees; 58 degrees, rebound angle 12 degrees) when using lob wedges and relay wedges. Or choose a more central bounce angle.
10. The club face is square – the club face and the hitting direction should normally be at a positive angle to the direction of the ball, which is called the club face square (left in the picture below). Due to unstable movements, balls hit by beginners tend to fly to the right. For this reason, the club face can be designed to deflect to the left of the ball release direction to suppress the occurrence of slices. This is called club face closing (right in the picture below), and vice versa. The face is open.
11. Hosel offset – The design in which the plane formed by the club face is further back than the shaft is called Hosel offset (left in the picture below). By using the club face to move back, the contact between the club face and the ball can be delayed during the downswing, allowing players more time to return the club face to alignment and avoid hitting the ball to the right.
12. Club head heel and toe weighting – The part of the club head close to the shaft is the heel of the club head (blue in the picture), and the part far away from the shaft is the toe (red in the picture). Add the weight of the club head Try to distribute them around the club head to increase the stability of the club head. In addition, increasing the weight of the heel can also prevent the ball from flying to the right.
13. Trajectory – Trajectory indicates the launch angle and flight path of the golf ball. No matter what kind of club, golf ball trajectory can tell us whether the angle of the club and the softness of the shaft match the player’s swing speed.
14. Torque (Torque) – is a unit of degrees used to reflect the distortion value of the shaft under the action of a fixed force. To test the torque value of the shaft, fix the thick end of the shaft and rotate it with a force of (4ft/bs). The resulting twist is the torque value of the shaft.
15. MOI moment of inertia (Moment of Inertia) – is a proper term for mechanical mechanics, with very complicated formulas and explanations. For golf, we can simply understand it as the resistance of the material section to deformation. High MOI means the stronger the ability to resist deformation. Simply put, MOI refers to the resistance of the club head to rotation. The higher the value, the better the fault tolerance.
Knowledge answers:
Q: I just learned golf. I would recommend a more durable club. I don’t plan to change it all the time.
A: Golf is a step-by-step process. Correspondingly, clubs must be selected and replaced according to the different needs of each stage. There is no one-size-fits-all solution. Among the clubs suitable for beginners, the relatively fixed ones include: Callaway’s BigBertha series, Cleveland’s Hibore series, mizuno’s MX series and Ping’s G series, etc.
Q: Clubs from big brands seem to be very expensive. I’m most afraid of wasting money if I don’t choose the right ones. I feel so distressed.
A: The easiest and most economical option for beginner players is to learn to play golf clubs. Beginner sets are not the main competitive products of brand manufacturers, and important technologies and materials are often not used, and good technologies and materials may not be experienced at the beginner stage. The combination of pole numbers also eliminates complexity and simplifies it, resulting in practicality and benefits. In terms of professionalism, the brand’s clubs are specially designed for beginner players, so there is no need to worry about performance and suitability. The most important advantage of the beginner set is that there is no need to consider separate sales. The overall consistency of the design and performance of the clubs is higher, which is very beneficial to beginners.
There are many beginner pole sets on the market, among which Mizuno’s Zephyr and Callaway’s Top Flite series are the most cost-effective.
Q: My friend said that I can just buy the No. 7 iron and use it alone. Is it cheaper?
A: Buying a 7-iron alone is only suitable for two situations: you are not sure whether you are interested in golf, and you have a club to try out for a while; you have no interest in golf, and just want to go to the driving range to swing occasionally.
If you want to develop golf as a hobby, this approach is not appropriate. First of all, it is unrealistic to practice all the golf moves with just a No. 7 iron. To get started with golf, it is best to basically master the moves of each club from the beginning, which will have the effect of getting twice the result with half the effort in improving your level. On the other hand, when you add other poles, you will have an extra 7-iron, which defeats the original purpose of saving money.
Q: I have taken a fancy to a set of copy poles. The price is so cheap. I really can’t see any difference from the original poles?
A: In addition to appearance, there are huge differences between copy poles and real poles. We have already said a lot about them, so I won’t repeat them here. Simply put, if it is only required to hit the ball, copy can complete it, but that’s all. If you want to play the ball well and help your future level, it is better to buy genuine clubs honestly.
Q: Can it be customized? Will it really be more suitable for my characteristics?
A: Since it is tailor-made for you, it is certainly more suitable for you than market-standard golf equipment. Tailor-made is also a service that should be promoted. However, beginner players have not yet formed their own movement characteristics, so tailoring is of little significance. If the body characteristics and the specifications of market products are not too different, tailor-made products may not be considered for the time being.
Frequently asked questions explained:
1. Swing-weight (SW) is completely different from the total weight of the club. It refers to how you feel about the weight of the club. For example, when a wedge is the heaviest, it usually means that it feels the heaviest when you hold it. Golf is a sport about how to use and control the club head. How you feel about the club head and how light or heavy the club feels are very important, so swing weight is more important than total weight. Technically speaking, swing weight is determined by the total weight of the club (the sum of the weight of the club, shaft, grip, and accessories) and the position of the resting equilibrium point.
Swing weight is measured using the 14″ scale method:
C is lighter than D, and D3 is heavier than D0. Theoretically, a light swing weight can reach A0, while a heavy swing weight can reach F9.
A0 A1 A2…B0 B1 B2…C0 C1 C2…C9 D0 D1 D2…F0 F1 F2…F8 F9
←Light Standard Heavy →
Generally speaking, ordinary golfers like C8, C9, and D0 swing weights, while D2 and D3 swing weights are suitable for golfers with greater strength and faster swing speeds. Because the swing is affected by the “leverage principle”, a long club feels heavy and a short club feels light during the swing. Swing weight is mainly affected by the length of the shaft and the weight of the club head; similarly, the properties of the grip and golf club, including curvature, return point and torque, also have a great impact on the feeling of club weight.
The relationship between swing weight and shaft
2 MOI（Moment of Inertia）
MOI is a relatively difficult golf concept to understand. MOI – Moment of Inertia is a proper term for mechanical mechanics and has very complicated formulas and explanations. For golf, we can simply understand it as the resistance of the material section to deformation. High MOI means the stronger the ability to resist deformation.
We can divide golf’s MOI into two important data:
1. At the moment of hitting the ball, keep the club face square and the moment of inertia when it hits the ball is the MOI of the center of gravity of the club head. Generally speaking, when we hit the sweet spot, we feel very smooth. When we don’t hit the sweet spot, we will feel the reaction force fed back by the distortion of the club face. At this time, the club head designed with High MOI will play a very important role. It can keep the club head relatively square. Effectively reduce the loss in distance and direction caused by a missed shot.
2. The other is the moment of inertia during the downswing, which is the MOI value of the shaft. The hardness of the shaft, your own swing speed, and the matching of the club head also affect whether the club face can pass the ball correctly. important factor in the area. If you use a shaft that is too soft to withstand the force of your downswing, it will be difficult for the club face to stay square at impact, thus reducing the chance of hitting a straight ball. On the contrary, if the shaft is too stiff, although it can maintain the correct direction of the club face, it will lose distance.
Glossary:
1. Par: Par refers to the number of strokes a golfer scores that is the same as the par for the hole. The par length of a golf course less than 250 yards is usually a par 3, the par length of a golf course between 250 and 470 yards is a par 4, and the length of a golf course over 470 yards is a par 5. Usually a course will have 4 (par 3) short holes, 4 (par 5) long holes, and 10 (par 4) mid-range holes. The par for a round on the 18-hole golf course is 72.
2. Bogey: Bogey refers to a golfer completing a hole with one stroke more than par.
3. Double Bogey: Double bogey means that a golfer completes a hole with 2 strokes more than par.
4. Birdie: A birdie is when a golfer completes a hole with one stroke less than par.
5. Eagle: Eagle ball refers to the number of strokes used by a golfer to complete a hole less than 2 strokes par. Most of these results occur on par 5 long holes.
6. Albatross: Albatross, also called a double eagle, refers to a hole-in-one shot on a par-4 mid-distance hole, or a hole-in-one shot on a par-5 long-distance hole. This kind of result cannot be achieved by ordinary amateur players.
7. Handicap: Handicap is a term specifically used in golf to calculate golfers’ playing level and score. Generally, the par for an 18-hole golf course is 72. For example, for a golfer with a handicap of 18, the total number of strokes used in a round is usually 90, and the handicap is calculated up to 36. Any excess is recorded as a handicap of 36.
8. Hole in one: Hole in one, specifically refers to hitting the ball directly into the hole from the tee box in golf. This is the luckiest moment on the golf course, and it is often a dream that many golfers cannot complete in their lifetime.
9. OB: (Out of bounds) abbreviation, a common term in golf, refers to hitting the ball beyond the prescribed boundaries. The boundaries of the golf course are marked with white wooden stakes.
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