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Buy badminton racket primary knowledge

Now there are many brands of badminton racket sold on the market, but in any case must choose the racket suitable for their own, first of all, in the purchase of badminton racket is a must need to consider the following aspects of the problem:

1, badminton racket weight should be appropriate: in fact, is not the lighter the racket the better, the lighter the racket, although the swing speed is fast, but the snap will feel the use of force will affect the power of the ball. Racket light swing speed, although fast, but in the snap ball will not feel the force, will affect the power of the ball.

2. Check the overall structure of the racket: After getting the racket, swing it to see if it shakes your hand. Shock hand brand must be the racket pole (handle and head of the connection part, this part is now made of carbon alloy steel material) is too hard; does not shock the hand, that is, the racket pole is more flexible. You can also hold the handle with one hand, a hand holding the top of the beat head to break a break, the beat has a slight degree of bending, proving that the beat rod part of the more elastic.

3, according to the actual situation of the individual to choose their own badminton racket: such as in singles, suitable for the choice of lengthened racket, such as belonging to the attacking players, should choose a slightly heavier weight, in the hardness of the racket. In doubles, it is best to choose a standard length racket, such as belonging to the defensive players, should choose a lighter racket.

4. According to the size of each person's hand, the handle should be comfortable to hold. People with large hands may feel uncomfortable holding a thin or square handle.

5, look at the strings installed whether the proportionality of the cross-string composition of each square should be the same size, each string tension should be consistent.

6, when you get a badminton racket, the first thing to look at the shape of its head, generally speaking, there are 2 kinds, there are the traditional egg-shaped and the head of the square flat head racket frame. The shape of the racket determines the size of its sweet spot (the optimal hitting area of the racket face), because when the ball falls in the sweet spot it gives the player enough power and control of the ball, so the size of the sweet spot is crucial to the player, and it makes it easier for the player to hit high-quality balls.

7, badminton racket according to the different materials, and can be divided into carbon fiber, carbon and aluminum one, aluminum and iron one and aluminum and iron split type. The choice of material and the weight and price of the racket has a direct relationship. Generally speaking, all-carbon feather racket is the lightest weight, is the mainstream material.

Advanced knowledge of buying badminton rackets

Racket shape and sweet spot

Racket shape: it is the geometric shape of the racket head. Nowadays, there are generally three kinds: a: the traditional ovoid shape b: the ISO racket shape with a square head c: the enlarged ISO shape with a larger string plane.

Sweet spot: The optimal hitting area of the racket face. When the point is in the sweet spot, it will give you enough power to hit the ball, control the ball, little vibration, and you will feel comfortable. The size of the sweet spot is very important to the player, it makes it easier for the player to hit quality shots, and the most crucial factor in determining the size of the sweet spot is the frame shape.

It can be seen that the ISO design allows for a larger sweet spot than traditional racket shapes, but of course not the bigger the head the better, the bigger the head the more negative impact on torque and weight. ISO head shapes are subdivided into two types, one with a squared off length with 8 holes for stringing, commonly known as a "big square head" such as the YONEX TI-5, Victor Leader, etc., and the other with 6 holes. Another kind of racket with 6 holes is called [small square head] and its racket frame is slightly larger, such as YONEX Ti-6, Ti-8, etc. Their appearance is different, but there is no difference in the use of performance. The square head racket will give you the advantage of the ISO racket when defending and especially when catching kills. That's why more and more players are using ISO racket shape, and it should be said that ISO racket shape is the development direction of the racket. If you are buying a racket now, my advice is to try to buy a product with an ISO head shape.

The relationship between stiffness, torque and ball control

Stiffness: The ball stays in the racket for only four to six thousandths of a second when you hit it. During the pre-stroke swing and when the racket hits the ball, there is a process of bending and recovery of the racket shaft, and the ball flies off the racket surface before the racket has returned to its original position. With the same player power, the softer the shaft, the easier it bends during the pre-stroke swing, and the greater the bend, which drives the racket head to move at a greater angular velocity, generating more power at the ball. The stiffer the shaft, the less power can be transmitted to the ball when it is hit, but the more it can reduce the transmission of shock. For the frame, the harder the frame, the less likely it is to deform and twist when it touches the ball, the more power it can transmit to the ball, and the less vibration it transmits.

Torque: The so-called torque refers to the amount of twisting of the racket surface when the racket hits the ball. The lower the torsion, the better the control of the ball.

The relationship between stiffness and ball control:

1. Directional control: When the racket hits the ball, the ball can be hit back according to the direction or angle of the blow. The stiffer the shaft and frame, the higher the stability of directional control and the stiffer the racket, the lower the torque when the ball is not hit in the sweet spot of the racket face.

2. Control of Depth: This refers to the control of the distance (point of impact) of the ball being hit back. Depth control is related to the player's own strength, and the softer the shaft, the better the depth control for the same strength. Regular rackets have a certain description of the hardness of the shaft, such as: VICTOR will be labeled flex-18 or 17, 18 of the shaft is softer, such as not labeled for the general 17. YONEX labeled half of the shaft in the product manual, the body of the racket is not labeled, the way for the 5-point system, the higher the score of the shaft the harder it is. If not marked, you can also have a rough estimate from the material, high-strength carbon fiber (High Modulus Graphite) material than carbon fiber (Graphite/Carbon) hardness. When selecting a racket, you can also bend the shaft with your hand to try the hardness, and pay attention to the bending point of the shaft, so that the closer it is to the handle, the better. You can also grab the handle and the head of the frame and rotate the racket in reverse (like wringing out a towel) to try out the torque of the racket, and note that you have to exert yourself to realize it.

On the whole, the shafts of rackets are getting softer and the frames are getting harder, and the shafts of YONEX rackets are much softer than they were a few years ago. I think the softer shafts are better for amateurs.

Weight, balance point and length

Each racket should be labeled with its weight, which is generally labeled as U, 2U, 3U, and some manufacturers use their own labeling, such as VICTOR rackets, which are labeled as W1, W2, etc., corresponding to 2U, 3U, but the most common is still the former. Generally, the weight of full carbon rackets is mostly 2U (90-94 grams) or 3U (85-89 grams), while the weight of aluminum-framed rackets is generally above U (95-99 grams), but there are a few full carbon rackets with weights as low as 80 grams, such as the SR and SA models of the YONEX ISO-SWING-POWER-500, which weighs only 81 grams. Heavier racquets are suitable for players with good power and a strong offensive game, while lighter racquets are more suitable for defensive players. If you're more of an attacker, the 2U weight is better, but if you're using a 3U racket, you'll feel that the racket floats when you hit the ball, and you won't be able to kill the ball with enough power.

The same weight racket will feel very different in your hand because of the different balance points of the racket. If the balance point of the racket is closer to the head, it is called [head heavy]; if the balance point of the racket is closer to the handle, it is called [head light]. The balance point is generally measured from the bottom of the racket upwards in centimeters and inches. According to the principle of mechanics, the weight is proportional to the feeling of the swing, while the balance point is square proportional to the feeling of the swing. A racket with a heavy head has a greater inertia in the head, which makes it more powerful but slightly less flexible, and is more suitable for offense. Lighter racquets are more flexible, but hit the ball with less power and transmit more vibration, making them less suited to hard-hitting players and more suited to defensive control players. In order to accurately control the balance point, a high-quality racket in the molding, will be installed in the handle balance weights, handle the bottom of the plastic bottom handle removed, will see the lower part of the wooden handle said handle 1/3 of the length of the hollow cylinder, inlaid with a plastic rod mounted, its purpose is to adjust the center of gravity of the racket, so that the same model of the same type of racket with the same balance point *, which is the basic requirements of the high-quality feather racket.

It is important to note that the weight and balance point descriptions above are for a brand new racket with no strings, skins or other attachments. The length of a standard racket is 664 millimeters, while the length of an extended racket is typically 674 millimeters. The main part of the extension is the shaft, and in some models the frame is also slightly extended. The biggest advantage of an extended racket is that it raises the point of impact, allowing you to hit kill shots with a greater angle of approach and faster ball speeds, increasing aggressiveness to a certain extent and expanding the catching area, so if you like to kill the ball, an extended racket is indeed a good choice. It is also important to note that longer rackets are more likely to cause wrist and arm injuries than regular rackets.

The relationship between materials and rackets

The rackets on the market nowadays are entirely made of new materials, such as carbon fiber, titanium alloy, high-strength carbon fiber, and so on, because these materials are lighter, stronger, and more durable, and also absorb more vibration and shock, while allowing racket manufacturers to have more room to play with the design of the racket's stiffness, feel, and hitting performance. When shopping for a racquet, it is best to first look at what material the racquet is made of. Generally, the racquet's shaft and frame are labeled with the material used to make the racquet, such as High Modulus Graphite (high strength carbon fiber), Graphite (carbon fiber). There are also rackets with the same material on the shaft and frame that only have All Graphite or All Graphite racket on one part of the frame or shaft.

When choosing a racket, it is important to be careful not to mistake a one-piece racket with an aluminum frame and a carbon shaft for an all-carbon racket. Generally pay attention to the label on the racket, you should be able to distinguish, if you are not sure, I have three methods can be used, one is to use the hand to feel the racket frame due to the aluminum alloy thermal conductivity of the racket frame molded on the cool while the carbon frame is warm. The first is to feel the frame with your hands, because the aluminum frame has good thermal conductivity, the frame is cool while the carbon frame is warm. Thirdly, feel the weight, the aluminum frame head is obviously heavier. As a transition from aluminum to full carbon, I feel that the price is too high and the performance is too low to be a good choice.

The right choice of strings

A good badminton racket is composed of a racket body and strings **** the same composition, you can not just look at the price and color to decide to choose the kind of strings, the importance of the strings is not less important than the racket. Should you choose a strung or unstrung racket? It depends on your skill level and financial situation. Generally speaking, rackets with good strings are cheaper, and the performance of the strings they are strung with is poorer. It is only suitable for beginners, who are less sensitive to the structure, thickness and tension of the strings. Unstrung rackets are generally more expensive, but you have a wider range of choices, and it is easier to choose a racket that suits your playing style, and to match it with strings that suit your playing style and feel. It is important to note that some high-end rackets may also wear strings, e.g., most of VICTOR's high-end products, and occasionally YY's high-end rackets.

Types of strings. There are generally two types of strings: sheep gut strings and synthetic nylon strings. Sheep intestine strings are made of sheep's small intestine, its elasticity and hitting performance is better, the lighter the color the better, but susceptible to weather, easy to damage, high cost. The vast majority of strings on the market today are synthetic nylon strings, which are divided into a number of categories depending on their construction and materials. Before you decide which strings to use, it's a good idea to discuss and find out what's right for you, and what's the right balance between performance and hitting durability, with a string threader or a friend who knows what they're doing.

String diameter. The diameter of the string plays an important role in the balance between hitting performance and durability. In general, thinner strings (up to 0.70mm in diameter) have better feel and batting performance; thicker strings (0.70mm in diameter and above) have better batting resistance and last longer.

String tension. The tension of a feather string is also known as tightness, and tension is generally expressed in pounds. To make your racket work with your playing style, you must set the tension of the feather strings. The first rule is that if the racket and string manufacturer has a recommended poundage on the racket or string package, the string tension should ideally be somewhere in between so that the performance of the racket and string can be maximized. If you exceed the recommended poundage you may not get the warranty for your racket and strings. If you want to get more elasticity, you should wear a lower poundage, lower tension strings produce more elasticity, on the other hand, the higher the string tension, the less power you can hit the ball with, but the more control you have over the depth (distance) of the shot, higher poundage strings have limited elasticity, so the string gives less of a slingshot effect on the ball. Therefore, if you have less power and need more power, wear a lower poundage string. If you have more power, a higher poundage tension will suit you better.

Reducing the risk of arm injuries

The parts of the arm that are most prone to injury when playing badminton are the shoulder, elbow and wrist joints. Generally speaking, the main reasons for injuries in these areas are incorrect hitting posture and improper choice of equipment used. Paying attention to the following parts will help you to some extent.

1. Reduce string tension (tightness): Looser strings provide a greater bed-of-wire effect, allowing you to hit faster, more powerful shots while transmitting less vibration.

2. Choose a racquet with a larger sweet spot: A racquet with a larger sweet spot is less likely to hit the non-sweet spot when hitting the ball, so there is less chance of vibration and less chance of injury.

3. Check the size of the grip: If the grip is too small, when the ball does not hit the sweet spot, the torque of the racket will be higher, which will cause more damage to the arm. A grip that is too large will not allow the palm of the hand to grip the racket and will fatigue easily. The right size should be such that there is a gap of about 5-8mm between the ring finger and the big fish muscle when gripping the racket with the forehand.

4. Check the hardness of the racket: A racket with a hard shaft requires the player to hit the ball with more force, which makes the arm more prone to fatigue and injury. A racket with a small shaft hardness requires less force for the player to hit a more powerful ball, reducing the possibility of arm fatigue. The average shaft stiffness of today's rackets is much lower than in previous years. Of course a softer shaft is going to have less directional control over the ball.

5. Pay attention to the correct batting posture: Incorrect batting posture is an important cause of injury. For example, if you hit the ball too low or too far back, if you don't turn your body sideways enough when you hit the ball, or if you hit the ball with your big arm, etc.

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The following aspects need to be considered when choosing a badminton racket:

1, badminton racket weight should be appropriate: in fact, it is not the lighter the better, the light racket swings fast, but the masters in the snap ball will feel the use of the force, which affects the power of the ball.

2. Check the overall structure of the racket: After getting the racket, swing it to see if it shakes your hand. Shaking hands of the racket must be racket pole (handle and head of the connection part, this part is now made of carbon alloy steel material) is too hard; does not shock the hand, that is, the racket pole is more flexible. You can also hold the handle with one hand, a hand holding the top of the beat head to break a break, the beat has a slight degree of bending, proving that the beat rod parts of the more elastic.

3, according to the actual situation of the individual to choose their own badminton racket: such as in singles, suitable for the choice of lengthened racket, such as belonging to the attacking players, should choose a slightly heavier weight, in the hardness of the racket. In doubles, it is best to choose a standard length racket, such as belonging to the defensive players, should choose a lighter racket.

4. According to the size of each person's hand, the handle should be comfortable to hold. People with large hands will feel uncomfortable holding a thin or square handle; people with small hands will feel uncomfortable holding a large handle. Finally, you can check the head for deformation, cracks or overall bending.

5, look at the strings installed whether the proportionality of the cross-string composed of each square should be the same size, each string should be the same degree of tension.

Get a badminton racket, the first thing to look at the shape of its head, the racket in general is divided into 2 kinds, the current market has the traditional egg-shaped and the head of the square flat head racket frame. The shape of the racket determines the size of its sweet spot, the so-called sweet spot is the best hitting area of the racket face. When the ball lands in the sweet spot it gives you enough power and control to hit the ball, so the size of the sweet spot is very important to the player and it makes it easier for the player to hit quality shots.

Badminton rackets are divided into carbon fiber, carbon and aluminum one-piece, aluminum and iron one-piece and aluminum and iron split according to the material. The choice of material is directly related to the weight and price of the racket. Generally speaking, the weight of full carbon feather racket is the lightest, is the current mainstream material, mostly 85-94 grams, the price is also more expensive, usually more than 200 yuan, while the weight of the aluminum frame racket is usually more than 95 grams, the price ranges from tens of dollars to more than a hundred dollars. The same weight racket in the hands of the feeling will be very different, this is because the racket's balance point is different. If the balance point of the racket is closer to the head of the racket, it is called "head-heavy", and the ball is more powerful but the swinging flexibility is a little bit poorer, which is more suitable for the offense, and it is also the choice of those players who are not strong enough. If the balance point of the racket is closer to the handle, it is called "head light", head light badminton racket is more flexible, but the power of the ball is smaller, more suitable for defensive control players and the pursuit of speed players.

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Important parameters of badminton rackets

G: It is used to indicate the thickness of the handle of the racket, generally 4G, 5G, 4G is suitable for people with big hands.

U: General badminton racket in the description of the information will be used to indicate the weight of U, the specific weight is 3U is 85-89 grams, 2U is 90-94, U is 95-99 grams.

Badminton racket balance point: why have the same quality markings in the hands of the racket in the hands of the feeling why will be different? This involves a question of balance point, if the balance point of a badminton racket is close to the head, it feels heavier on the head, if the balance point of the racket is closer to the handle, it feels lighter on the head. The balance point is measured from the bottom of the racket in centimeters or inches. "According to mechanics, weight is proportional to the feel of the swing, while the balance point is square proportional to the feel of the swing; a racquet with a heavier head is more suitable for offense as it has more inertia in the head and hits the ball with more power but has slightly less flexibility in the swing. A lighter head racquet is more flexible but hits the ball with less power and the racquet transmits more vibration, making it less suited to players who hit the ball hard and more suited to defensive control players." , In order to precisely control the balance point, the mass of the racket handle is generally altered with a view to achieving control of the balance point.

Badminton racket extension: the length of the standard racket is 664 millimeters, and the so-called extension racket is generally 10 millimeters longer than the standard length. The most important part of the extension is the shaft, and there are some models with a slightly longer head. The extended racket hitting point is a little higher, to improve the attack is a certain help.

Badminton Racket Hardness: The ball stays in the racket for only four to six thousandths of a second before it is hit. During the swing before hitting the ball and when the racket hits the ball, there is a process of bending and recovery of the racket shaft, and the ball has already flown off the racket surface before the racket has returned to its original position. With the same player power, the softer the shaft, the easier it bends during the pre-stroke swing, and the greater the bend, which drives the racket head to move at a greater angular velocity, generating more power at the ball. The stiffer the shaft, the less power can be transmitted to the ball when hitting the ball, but it can reduce the transmission of the shock of hitting the ball. For badminton racket frames, the harder the frame is, the less likely it is to deform and twist when it touches the ball, the more power it can transmit to the ball, and the less vibration it transmits.

The relationship between hardness and ball control:

1. Directional control: When the racket hits the ball, the ball can be hit back according to the direction or angle of the blow. The stiffer the shaft and frame, the higher the stability of directional control and the stiffer the racket, the lower the torque when the ball is not hit in the sweet spot of the racket face.

2. Control of Depth: This refers to the control of the distance (point of impact) of the ball being hit back. The control of depth is related to the player's own strength. The softer the racket, the better the control of depth for the same amount of strength.

TI series badminton racket: TI is the abbreviation of TITIAN, is the meaning of titanium; the biggest feature of this series is the head of the racket is divided into the upper and lower two semicircle, the two semicircle with titanium alloy composite material connection between the two semicircle, with a view to achieve the head of the racket hardness increase, so that the ability to control the ball is greatly improved.

Badminton racket racket shape: mainly divided into oval and square head shape two kinds, oval area is small but the air resistance is also small, square head shape is hitting the large area but the air resistance is also large. Of course, there are other shapes based on this, not one by one and enough.

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