Category: Guide

The serve

1. No illegal delay of the serve by either team is permitted on the serve;
2. Both the server and the receiver must stand in the diagonal serving area to serve and receive the ball, with their feet not touching the boundaries of the serving area; both feet must be partially in contact with the ground and must not move until the ball is served.
3. The server’s racket must first hit the tee, and at the same time the entire ball must be below the server’s waist.
4. At the moment of hitting the ball, the racket stick should be pointing downwards, so that the entire head of the racket is significantly lower than the entire grip of the player.
5. When the serve begins, the player’s racket must be swung forward continuously until the ball is served.
6. The ball served must travel upwards over the net and, if unblocked, shall fall into the receiving player’s serving area.
7. Once both players are in position, the first forward swing of the head of the server’s racket is the start of the serve.
8. The server shall not serve until the receiver is ready, and the receiver is considered ready if he/she has attempted to receive the serve.
9. Once the serve has begun, it is over when the ball is touched by the player’s racket or hits the ground.
10. In doubles matches, the partner of the server or receiver stands in any position, but must not obstruct the view of the opposing server or receiver.

Singles serve

1. When the score of the serving player is zero or an even number, both players shall serve or receive from their respective right tees.
2. When the serving player’s score is an odd number, both players shall serve or receive from their respective left tees.
3. In the case of a “replay”, the server shall stand on the total number of points scored in the set.
4. After the ball has been served, the server and the receiver shall play alternately until the ball is “faulted” or “dead”.
5. A point is awarded to the server for an offence or if the ball touches the ground in the receiver’s court and is dead. The player then serves from the other tee.
6. The server loses the serve when the ball is illegal or dead because it touches the ground in the server’s court. The receiver then becomes the server and neither player scores.

doubles serve

1. At the beginning of a set and every time the team that has the right to serve shall serve from the right tee.
2. Only the receiver may receive the serve; if his partner goes for the ball or is touched by it, the serving team scores a point.
3. After a serve has been returned, the ball shall be hit by anyone on the serving side, then by anyone on the receiving side, and so on until the ball is dead.
4. After a self serve has been returned, players may hit the ball from any position on their respective sides of the net.
5.  If the receiving team infringes or the ball is dead because it touches the ground in the receiving team’s court area, the serving team scores a point and the original player continues to serve.
6.  If the serving team infringes the rules or if the ball touches the ground in the serving team’s court and becomes dead, the original player loses the right to serve and neither team scores a point.
7. The player who serves first at the beginning of each set must serve or receive from the right tee if his/her team has scored 0 or an even number of points in the set, or from the left tee if his/her team has scored an odd number of points.
8. The player who receives the serve first at the beginning of each set must serve or receive from the right tee whenever his side scores 0 or an even number of points in that set, and from the left tee whenever he scores an odd number of points.
9. The two opposite forms of standing above are used for their partner.
10. In the event of a replay, the total number of points scored by their side in the set will be used for standing.
11. Serves must be alternated from both tees
12. When the first player to serve in any set loses the right to serve, the first receiver of the set serves, then the first receiver’s partner, then one of their opponents, then the other, and so on.
13. A player must not serve in the wrong order and receive in the wrong order, or receive twice in succession in the same game
14. Either player on the winning side of a set may serve first in the next set, and either player on the losing side may receive serve first.

Re-serve:A referee calls a “re-serve” to interrupt play.

1. In unforeseen or unforeseen circumstances, the ball shall be re-served.
2.  If the ball hangs over the net or stops at the top of the net after crossing the net, other than a serve, the ball shall be re-served.
3. A serve that is violated by both the server and the receiver shall be retaken.
4. A player who serves when the receiver is not ready shall serve again.
5.  A complete separation of the tee from the rest of the ball while play is in progress, the ball shall be re-served
6. The ball shall be re-served when the linesman does not see it and the referee is unable to make a decision
7.  In the case of a “re-serve”, the last serve is invalidated and the original player re-serves the ball

Dead ball

1. The ball hits the net and hangs on to the net, or stops at the top of the net;
2. The ball hits the net or the posts and starts to fall to the ground on the hitter’s side of the net;
3. The ball touches the ground;
4. An “infringement” or “re-serve” has been declared.

Tee Errors

• The following is a teeing ground error:

1. Serving in the wrong order;
2. Serving from the wrong service area;
3. Preparing to receive a serve in the wrong service area and the ball is served.

• If a tee error is discovered after the next serve is hit or struck, the error is not corrected.
• If a tee error is discovered before the next serve is struck

1. Both sides are in error and shall ‘re-serve the ball’;
2. If the wrong side wins the round, the ball shall be “re-served”;
3. If the erring side loses the round, the error shall not be corrected.

• If a “restart” is made due to an error on the tee, the round is nullified and the error is corrected and the ball is restarted.
• If the error is corrected at the end of the service area, play continues without changing the player’s new service area or order of serve.

Badminton Court Standards

The badminton court is a rectangular court measuring 13.40 metres in length, 6.10 metres wide for doubles and 5.18 metres wide for singles. The width of each line on the court is 4cm, measured from the outer edge of the line. The boundaries of the court should preferably be drawn in white, yellow or other easily identifiable colours.

The minimum space above the entire court is 9 metres according to international regulations, within which there must be no beams or other obstacles, and there must be no obstacles within 2 metres of the perimeter of the court. There should be a minimum distance of 2 metres between any two courts side by side. The walls around the pitch should preferably be dark in colour and not windy.

Badminton net standard

The badminton net shall be 6.10m long and 76cm wide, made of high quality dark natural or man-made fibre, with the size of the net holes between 15-20mm, the upper edge of the net shall be sewn with a 75-wide double-layer white cloth (folded in half), and with a fine steel wire rope or nylon rope passed through from the mezzanine layer, and securely hung between the two net posts. The standard net should be yellowish brown or grass green. The net posts shall be 1.55 metres high, and the two posts shall be positioned at the mid-point of the doubles court sideline for both singles and doubles. For official matches, the top edge of the centre of the net must be 1.524 metres above the ground and the ends of the net 1.55 metres high. The ends of the net must be fastened to the posts and there should be no gap between them.

Nets

1. The nets shall be dark-coloured, high-quality fine rope. The net shall have square holes and each side shall be between 15-20 mm in length.
2. The net is 760mm wide at the bottom.
3. The top of the net is made of 75 mm white cloth folded in half and passed through the interlayer with ropes or wires. The top edge of the white cloth must be tightly fitted to the ropes or wires.
4. The ropes or wires must be of sufficient length and strength to be securely tensioned and level with the top of the net posts.
5. The net must be 1.524 metres high in the centre of the court and 1.55 metres high at the doubles touchline.
6. The ends of the net must be fastened to the posts with no gaps between them.

Net Posts

1. The height of the net posts is 1.55 metres from the ground level of the court. The posts must be securely perpendicular to the ground and keep the net tightly stretched and should be placed on the sidelines of the doubles.
2. If it is not possible to set the net posts, alternative methods must be used to mark where the touchline passes under the net. For example, use thin posts or 40mm wide strips fixed to the sidelines vertically up to the top rope of the net.
3. On a doubles court, the net posts, or strips representing the net posts, should be placed on the doubles sidelines, regardless of whether a doubles or singles match is being played.

First, it is a kind of whole body sports programme.

Whether it is a regular badminton game or as a general fitness activities, should be on the ground non-stop foot movement, jumping, turning, swinging, reasonable use of a variety of hitting techniques and footwork will be the ball on the field back and forth to hit, thus increasing the upper limbs, lower limbs and waist muscle strength, accelerate the whole body of the exerciser’s blood circulation, enhance the cardiovascular system and the respiratory system function. According to statistics, high intensity badminton exercise heart rate can reach 160-180 times per minute, medium intensity heart rate can reach 140-150 times per minute, low intensity exercise heart rate can reach 100-130 times per minute. Long-term badminton exercise can make the heartbeat strong and powerful, lung capacity increased, endurance improved. In addition, badminton requires practitioners to make judgement on the fast-changing ball path in a short time, decisive counterattack, therefore, it can improve the sensitivity and coordination of the human nervous system.

Second, it can adjust the amount of exercise.

Badminton is suitable for men and women, young and old, and the amount of exercise can be determined according to the individual’s age, physical fitness, sports level and the characteristics of the field environment. Teenagers can be used as an effective means to promote growth and development, improve physical function for exercise, the amount of exercise is suitable for medium intensity, the activity time of 40-50 minutes is appropriate. Moderate amount of badminton sports can promote young people to grow taller, can cultivate young people’s confidence, courage, determination and other good psychological quality. The elderly and the infirm can be used as a health care rehabilitation method of exercise, exercise should be smaller, the activity time to 20-30 minutes appropriate, to achieve the purpose of sweating, bending, stretching the joints, so as to enhance the function of the cardiovascular and nervous system, prevention and treatment of cardiovascular and neurological disorders in the elderly. Children can be used as an active game method to exercise, let them run and jump in the sunshine, and ask them to hit the ball, cultivate their quality of not being afraid of difficulties, not afraid of suffering, not willing to lag behind.

Third, it is simply.

not subject to the limitations of the venue
Badminton activities on the basic requirements of the equipment is relatively simple, only two rackets, a ball and a rope can be. Formal competition venue area of only 65-80 square metres, 13.40 metres long, 6 metres wide (doubles) or 5.18 metres (singles), usually badminton activities as long as there is a flat open space can be. In the case of not much wind, you can carry out activities outdoors, as long as the net is set up, you can draw a few lines on the open space of a certain length and width, and the two sides practice against each other. Therefore, it can be played not only in regular indoor stadiums, but also in parks, living quarters and other places.

When it is used as an outdoor sport, it can also make the exerciser inhale fresh air, be exposed to sunlight, improve the blood circulation and metabolism of the human body, and at the same time, feel the beauty of nature, and be happy and healthy during the exercise.

collective, individual are suitable
Badminton can be both single combat (two people practice), but also collective war (doubles contact or three against three people practice). When single sparring, the contact can play any arc, any distance, any power, speed, when any drop point of the ball to; Collective battle can make the contact to develop the habit of co-ordination and cooperation, and cultivate the spirit of collective idea.

not subject to age and gender limitations
Badminton sport game is strong, the amount of exercise can be big or small. Strong young people can play the ball and diao and heavy, try their best to save any incoming ball, give off their youthfulness; old and weak practitioners can hit the ball gently, according to their own requirements to change the rhythm of hitting the ball, so as to achieve the effect of exercise, longevity, not only the activities of the body, but also entertained the mood. People of different ages, different genders and different physiques can find fun in badminton.

Distribution of hair pieces on the wings of geese and ducks
1~3 pieces are half feathers, 4~10 pieces are blade plume feathers, 11~16 pieces are nest plume feathers.

Feather collection-Plucking method
Plucking method has two kinds of dry plucking and wet plucking, dry plucking is better, dry plucking will be geese, ducks slaughtered, while the body temperature has not yet become cold, before grabbing the plucking, can maintain the original colour and quality. But most of our country use wet plucking, wet plucking is the slaughter of geese, ducks in about 70 degrees of hot water in the scalding 2-3 minutes, take out after plucking. Note that the water temperature should not be too high, do not soak too long, so as not to curl the fluff, shrinkage, colour and lustre of the dark; wet plucking of the hair of the water content is large, need to dry before collection.

Classification of badminton hair slices
Badminton with slicing from the beginning of the goose knife hair, to now put the cormorant duck hair piece, water duck hair piece and cherry valley duck hair piece are applied to badminton production, greatly enriching the supply of badminton. Badminton wool piece of classification is very complex, because there is no national unified classification number standard, each manufacturer of badminton standards are set within the industry, but different producers if the same standard products do not mean that their quality is the same. First of all, according to the hair type classification for large, medium and small hair, curved hair, black washed white hair, curved hair straight hair, etc.; and then according to the quality of the hair is divided into one, two, three, four, five, and then according to the hair of the curved wing is divided into five standards, and then according to the thickness of the hair stalks, hair pieces of the thickness of the similar pieces of the hair categorised. In the same badminton 16 feathers must be the same class and should be as similar as possible, the more high-grade products using the 16 feathers to be more consistent in order to ensure the quality of the product.

Badminton feather discernment
The feathers of high quality badminton must all be made of high quality goose feathers. The strength and toughness of goose feather are particularly suitable for badminton requirements, but its cost is higher, and the supply of raw materials is limited in number, so in some of the less demanding badminton manufacturers use duck feather, it is difficult to distinguish between duck feather and goose feather from the appearance alone and the flight performance of the well-crafted duck feather ball is also very good, due to the two kinds of hair pieces of the hair stalk structure and the nature of the hair is not the same, and its resistance to play performance than goose feather ball to a lot worse in the normal batting is very easy to break, due to the price is much cheaper than goose feather, using duck feather can effectively reduce the cost of badminton. Due to the different structure and nature of the two types of hairs, their resistance is much worse than goose feather balls, and they are easy to break in normal batting, but because the price of duck feathers is much cheaper than that of goose feathers, the use of duck feathers can effectively reduce the cost.

How do you calculate the number of pieces of wool in 1kg, or how do you know the number of pieces to find the catty?

1. Weigh the grams of 16 pieces of wool several times and find the average weight m / 16 pieces.
2. Proportion the number of slices or the number of kilograms according to the ratio.

      Example: A factory sells 500,000 pieces of wool in 10 bags.

1. average gram weight 1.70g / 16 pieces -> number of pieces per catty  x = 4706 pieces / catty
2. 5.31g per bag, 50,000 pieces per kilometer

The weight of badminton – Wo Ling wool piece (other types of wool piece similar)

1. Take a number of 16 pieces of hair pieces used for inserting balls after being divided into printing hair, coarse, medium and fine, and curved wing degrees, and weigh them (on an electronic scale) to find the average weight.
   16 fine bone about: 1.4-1.5g, about 5000 pieces / catty
   16 medium bones: 1.5-1.6g, about 4900 pieces/catty.
   16 thick bone: 1.6-1.7g, about 4800 pieces/catty.
2. According to the weight requirement of the left and right-handed balls, fit the ball head.
   The left ball requires 3.9-4.0g, and the landing point is 76, 77.
   The right ball requires 4.0-4.1g, landing point in 76,77.
   This requirement at 24 degrees, humidity at 80 room temperature, if in the cold winter or sunny weather, badminton should be increased or reduced accordingly grams, in general, the winter temperature is low, low humidity, the requirements of the ball with the focus of the summer climate on the contrary, the ball should be matched with the light point, and finally, according to the customer’s requirements of the overall consideration.
3. Weighing also consider the mechanical drilling, to drill 0.1-0.2g of the ball chips.

The difference between badminton glue:
The quality of the glue directly affects the firmness and durability of the badminton ball. Production of badminton glue is divided into two categories: advanced resin glue and chemical glue (nitrocellulose). Nitrocellulose glue: its need and natural water (tincture of acetic acid, toxic) blending, blending, glue thin, more transparent, glue dry fast (about 15 days), easy to burn and yellowing, low price, great danger; Resin glue: its need to blending, blending with alcohol, glue, glue, glue, glue, glue, glue, glue, glue, glue, glue, slow drying (about 30 days), long time without discolouration, hardness, expensive. Senior resin glue in the hardness and firmness are better than chemical glue, but its cost is relatively high, generally used in the production of high-grade badminton, other varieties and badminton are used in high-strength chemical glue, in order to ensure the quality of the various varieties of badminton glue content should be higher than the requirements of the national standard.

Badminton main components and parameters
The calibre of the inserted ball is 75-80mm, the general calibre is 78-79mm, and the length of the hair piece is 63mm (after inserting the ball).
Total length of the wool piece: 76.5mm

The ball is generally divided into:

1.  full cork, double cork (the upper layer of Taiwan fibre, the lower layer of cork)
2. triple (upper and lower layers of cork, the middle layer of Taiwan fibre)
3. Table fibre (the upper layer of 11mm or 14mm table fibre, the lower layer of cork shavings)
4. Foam

Ball weight: 2.1g-2.8g (normal 2.2g, 2.4g, 2.5g)
Gram weight of glue injection: 0.7g-0.9g
After the injection of glue dry glue is: 0.2g
General glue injector can inject 50 balls.
Drying time after glue injection is about 1 day.
Drying room temperature after glue injection: 20~22, humidity absorption:
The calibre of the ball (without glue) is: left hand: 68mm, right hand: 69mm.
The weight of the glue is 0.1g.
The length of the thread after knotting is not more than 3mm.

The test ball is mainly divided into: A, B, C, D and route ball.

1. The standard of A ball is: stable flight and speed.
2. The standard of B ball is: stable flight, slightly slower speed, small swing.
3. The standard for C ball is: slow speed, small wobble.
4. The criterion for the D ball is big wobble.
5. The criteria for the route ball is: head swing in flight.

A-ball down the line: a little better than B-ball.
B ball down the line is: a little better than C ball.
The standard for A and B balls is: A and B balls mixed together.
The standard for B and C balls is: B and C balls are mixed together.
The standard for A, B, C is: A, B, C balls mixed together.Swing balls should be re-weighted and brushed with glue for a week (due to the dryness and humidity of the glue) before trying to play.

The weight of the ball = the weight of the ball head + 16 pieces of wool weight + 1.0g (including the weight of the tie wire, glue)
The temperature of the drying room after glue rolling is: 30℃ and humidity is: 60
After glue rolling, check the evenness of glue between two lines and whether there is any glue inside and outside, the coils are parallel, the wool leaves and the ball head without glue.
The amount of dry glue in each ball of rolled glue is 0.5~0.7g.
The dry glue content of each ball is 0.25~0.3g.
The ball weight should be between 3.8g~3.9g, so that the total weight of the finished ball can be 4.9g~5.0g.
Generally 0.5g of wet glue weight is equivalent to 0.15g of dry glue weight.

The calibre of the ball measuring device is 68mm for left hand and 69mm for right hand.
Semi-finished ball, the diameter of the cylinder is: 73.5mm, length is 400mm.
The diameter of the cylinder of the finished ball is 64±0.5mm，length is 390mm~393mm.
The calibre of the finished ball is: left hand: 65mm, right hand: 66mm.
 

Playing badminton requires little equipment, the price is not expensive, so many people will always have a racket at home. However, there is a lot to learn about the selection and preservation of equipment.

Badminton

Badminton is divided into two kinds of indoor and outdoor for ordinary enthusiasts, a tube of 20-40 yuan ball is enough. But many people do not know, the same price of the ball is also divided into two types of indoor and outdoor.

Most of the balls we use in our homes are outdoor balls. These balls are made of red rubber, so you don’t have to work too hard to hit them far. The regular tournament balls are indoor badminton balls with white heads. This type of ball has cork inside the bottom bracket and white sheepskin outside, which is suitable for indoor games. There is also an all-plastic badminton ball is also very popular, but it is less elastic, it is recommended that readers who want to learn real kung fu do not use such a badminton ball.

The quality of the badminton backing determines the amount of elasticity of the ball. If it is an outdoor ball, then the rubber must be uniformly thin and tightly bonded. If it is an outdoor ball, then the wood should be soft and the sheepskin wrapping should be dense.

The 16 feathers on a badminton ball determine whether it will fly smoothly. The best feathers are hard, straight, durable goose feathers, which have the best falling speed. Chicken and duck feathers have thin tubes and thin walls, so they bend and deform easily, so the quality is less guaranteed. Feather length should be between 60-70 mm, but also evenly spaced, the same thickness, there should be no inverted hair, broken stalks, insect moths and other problems, otherwise the ball will not go the right way.

Badminton Racket

Racket too light is also not good now on the market a variety of rackets, the price from dozens of yuan to hundreds of yuan, thousands of yuan. I recommend that beginners buy 100-200 yuan brand racket for practice. 30 yuan racket is not unable to play, but it is just that its texture is hard, and can not hold out for a long time will be easily broken.

Some people think that the lighter the racket, the more advanced the material used. In fact, too heavy racket will certainly make people muscle strain, not conducive to sports, but the racket is too light is not strong enough, will seriously affect the strength of the ball, so too light racket is not good.

When picking a racket, you should swing it to see if it shakes your hand. A racket that feels like it shakes your hand is usually too stiff in the shaft and head, and less flexible, which is not conducive to movement.

The handle of the racket can be big or small, when you pick it, you should hold it to feel comfortable. Generally speaking, people with big hands, holding a thin or square handle will be uncomfortable; people with small hands, holding a thick handle is also disproportionate. Finally, check the racket head for deformation, cracks or overall bending.

String

String should not be too tight high-level racket generally do not pre-stringing, which requires the buyer to buy a racket according to their own sports to formulate the texture, tightness of the appropriate string.

From the texture of the strings, there are generally sheep intestine strings, nylon strings, cattle string and chemical fibre sheep intestine synthetic strings four kinds. Sheep intestine string elasticity is good, but easy to break; nylon strings beautiful, but poor elasticity, affected by the temperature, brittle and easy to break in winter; cattle tendon strings are stronger, the price is also low, but the elasticity is poor. Chemical fibre and sheep intestine synthetic strings are the type of strings that professional players love to use in official competitions, which are both firm and flexible, but because of the complicated production process, they are expensive.

The poundage of the string should be different according to the different conditions of each person. The general professional players use a very high poundage of string, the racket surface is very tight, so the return speed is very fast, the technical requirements are higher. For ordinary badminton fans, the racket string needs to leave a little elasticity, do not need to be so tight, 18-22 pounds is enough. If it is offensive playing style fans, racket string needs to pull a little tighter; defensive playing style fans of the racket string can be a little loose.

Keeping Equipment

Keeping equipment should be careful nowadays people use badminton racket is made of carbon alloy material, it is not easy to deform, but afraid of pressure, extrusion, grinding, so it is best to put on the racket cover when not in use, hang up and save.

New rackets usually have soft leather wrapped around the handle, which can prevent players from getting injured when using them because of too much force on both hands or for too long. However, in order to prevent the racket from slipping, athletes also commonly use terrycloth rubber or gauze to replace this layer of soft leather, so that the handle can absorb sweat and feel comfortable and soft in the hand.

Clothing 

Badminton is not too demanding on clothing. Generally speaking, the texture is light and soft, flat heel, wear-resistant, shock-absorbing effect of shoes can be used as badminton shoes. And generally loose and comfortable and breathable sweat-absorbent sportswear trousers will be enough to adapt to this kind of sports.

However, travelling shoes with high heels and shoes that will show black marks after friction on the ground are not suitable for this kind of sport that requires sudden running and stopping, so it is recommended that you pay a little attention to your choice.

In the gym to play badminton enthusiasts more and more. But a lot of people play ball shoes wear very unprofessional, foot basketball shoes, jogging shoes, canvas shoes on the battlefield.

National general level badminton player said, playing badminton need to stop and turn quickly, there are special requirements for shoes. Wearing unsuitable shoes to play badminton is easy to be injured and it is difficult to improve the ball skills.

They believe that badminton shoes should have the following characteristics: lightweight design. Basketball shoes need to protect the ankle joint, the upper is designed to be higher, harder and bulky, and it is easy to break your foot when you wear basketball shoes to play badminton.

Wear-resistant and non-slip soles. The soles of badminton shoes should be made of raw rubber or ox tendon, with fine interlacing patterns, high friction and good grip. While the jogging shoes have a coarse tooth pattern on the sole, it is easy to slip on the wooden floor.

The soles are shock absorbing and cushioning. Canvas shoes are rubber-soled, in the process of jumping and landing, the soles can not play the role of cushioning, and it is easy to be injured.

Flat heel for easy power. Many non-professional shoes have heels, which are not suitable for playing badminton. They suggest that when buying special badminton shoes, the following points should be noted:

1. the shoe size of the new shoes should be slightly larger, so that it will not top your feet when you step forward.
2. buy with a hand to fold the bottom of the shoe, toughness should be good.
3. touch the upper, feel soft, fabric to absorb sweat, breathable.

They also reminded the majority of enthusiasts, badminton shoes are best to wear when playing, one can avoid shoes dirty field, the second can avoid the bottom of the shoe grey and slippery.

Badminton Racket Buying FAQ What kind of badminton brands are there to choose from?

YONEX is the number one ranked badminton supplies brand, there are; Kason (Kason), victory (Victor), Sotx (Sotx), Wilson (Wlson), Flylix (Finnex) …… better-known brands there are Gosen and so on. It is worth mentioning that China has become a manufacturing kingdom in the past few years, with China’s Taiwan’s feather net supplies manufacturers in particular, the production line will be transferred to the Pearl River Delta Yangtze River Delta, they also bring the relevant knowledge and technology are brought to the mainland, and now badminton industry chain of almost all the links in the country. It can be said that China is not only the largest market for badminton, but also the largest production volume and best quality of badminton products are also in China. However, compared to the international brands such as Wilson, Yonex (whose sponsorship has almost monopolised the national teams of all badminton powerhouses), the brand awareness of domestic producers is still improving.

Seasoned players are able to identify the right racket and find a good one for less money. For general amateur players, with the use of badminton racket materials and production processes gradually obtained, domestic brands (including Taiwan brands) have produced a large number of first-class quality rackets, fully meet the requirements of the use of professional and amateur players, the price is quite high. The same performance and material of a racket, some of the so-called well-known brands of rackets may be several times more expensive than the general brand, which certainly has a huge advertising and marketing costs, but also to take advantage of the beginner’s consumers “cheap no good” shopping psychology. So learn more about badminton racket knowledge, clear requirements of their own racket, sometimes you can really find a good racket at a good price for yourself! JianZhiLe badminton network to provide a lot of related knowledge to everyone’s reference.

What suits you is the best, go and choose one!

How to choose the right racket according to its performance parameters?

The general principle is to choose a racket with a soft shaft, i.e. a lower score and a lighter weight for players with less power, and a hard, heavier shaft for offensive players. The higher the control score, the better. The higher the score, the stiffer the shaft, the better the control and the easier it is to hit powerful shots.

What does the 2UG3 sticker on the handle of a racket mean? The xU in front indicates the empty racket weight: U-95~100g, 2U-90~94g, 3U-85~89g, 4U-80~84g, the common weight of yonex racket is 2U, 3U, 4U. Gx Indicates the thickness of the handle: G1 is the thickest and G5 is the thinnest.

Why do some rackets have a row of numbers on the handle? There are two kinds of numbers on the handle: 1: there is only a larger Arabic number which indicates the sales region of the racket, I now know only 4-Hong Kong Southeast Asia, 3-North America, 5-Mainland China. 2: in addition to the larger number there is a series of small numbers and letters of the alphabet, this racket is yonex. This kind of feather racket is yonex provided to the national team, in front of the large numbers still represent the region, small numbers for the feather racket number each different, the last letters of the alphabet on behalf of the country, such as: CH – China (CN, CP for the sponsorship of the Chinese national team’s racket), CD – Canada.

What does it mean that some racket models have long and swing power logos on the back of the racket?

The meanings of these logos are as follows: long – Longer rackets are 10mm longer than normal rackets, which helps players to expand their range of return, increase aggressiveness, send out diao drills, and hit powerful high-angle kills. power – Power rackets are designed using the Strengthened Power Point Concept (SPT), and are heavier at the top of the racket, allowing them to hit high attacking returns with less power. The lightweight racket is generally 3U in weight, and with the lightweight design, the racket can be swung faster than a traditional racket but with less power, making it more suitable for defence. slim – The frame is only 9mm wide and 5.5mm thick, and is 25% thinner than a traditional frame in cross-section, making it the world’s most powerful racket. 25% slimmer than traditional racket frames, the slimmest racket frame in the world; it can reduce wind resistance by 10% and increase hitting speed by 5%. tour-Tour rackets are made of better materials than the same type of racket, and have better performance. Swing Power-(Introduction) uses different elasticity, different weights, and different balance points. VF-“vario-frame” racket frame, the top of the frame adopts AR design, which reduces air resistance and improves hitting power; the bottom of the frame adopts CAB design, which reduces hitting torque and enhances control, MF-yonex Co. MF – yonex’s new 2000 technology “Mega-Frame” large racket face, the frame is larger in width and length than normal rackets, greatly increasing the hitting sweet spot. MPF – “muscle power frame” muscle shaped frame design, used in Ti-10 and other new rackets.

Are full carbon rackets made in one piece?

Because of the jointless it is difficult to make the weight distribution of the racket reasonable and the torsion is poor, so it is seldom used as far as I know there are only low-grade carbonex 8000 used, while the frame and the shaft of the racket are manufactured separately and then connected with built-in T-joint (Built-in T-joint) technology racket its performance in all aspects are much better.

Is the more expensive the better?

Generally speaking, the price of a racket is related to the material, the workmanship and the brand. Newer models are usually more expensive, but usually the price goes down after a while. Generally speaking, expensive rackets are mainly for professionals, not necessarily for amateurs, and it is difficult for amateurs to feel the slight differences between different models. So the main thing is to pick the racket that you are most comfortable with and not just look at the price. Of course if you don’t consider the price factor much and you want shape and style, you might as well go after the latest.

Where are Yonex rackets made?

Yonex feather racket manufacturing place has two one is Japan mainland two is Taiwan, if it is made in Japan in the racket pole and the bottom of the racket handle will respectively have MADE IN JAPAN and JAPAN’s words and Taiwan’s manufacturing will only be affixed in the bag with MADE IN TAIWAN’s label. And if it is another non-Japanese Yonex racket, it will not be labelled as MADE IN JAPAN, but rather as DESIGNED BY YONEX JAPAN! or some other similar description. In Japan, where industry is particularly developed, this is done very well! In addition, counterfeit yonex rackets have the words MADE IN JAPAN and JAPAN on the bottom of the shaft and handle of each racket.

Some rackets sometimes have the word SP printed on the back of the shaft, which means that the racket is sold by yonex Singapore, and all rackets sold commercially are now from yonex Singapore. Only the rackets supplied to the national teams come from Japan, and some of them may come into the market for various reasons.

How to choose a badminton racket?

Any badminton enthusiast with more than 10 years of playing experience can look back at the badminton supplies and equipment over the years, which can be said to be changing rapidly. Nowadays, many badminton product manufacturers use high technology to design and manufacture badminton products, so that players can enjoy the fun of badminton and achieve better results. For example, the introduction of ISO square head racket, the application of space material titanium and so on, undoubtedly to make the players play more speed, more lethal ball. If you are now preparing to choose a new racket, then you may wish to listen to the advice here, because for a badminton enthusiast, a racket’s shape, weight, structure, material, hardness and correct stringing is obviously more important than its colour, packaging and price.

I. The shape of the racket and the sweet point

This is the geometric shape of the racket head. Now there are generally three kinds: a: the traditional ovoid b: the head of the square ISO racket shape c: the string surface is bigger increase ISO shape, there is a less common is WILSON products for the frame on the wide bottom of the small “big hammer” shape, this racket shape is transplanted from WILSON’s net racket is rare, the performance of the poor, here I I won’t introduce it here. Sweet spot: The optimal hitting area of the racket face. When you hit the ball in the sweet spot, it will give you enough power, ball control, little vibration, and you will feel very comfortable. The size of the sweet spot is very important to the player, it makes it easier for the player to hit quality shots. The most important factor in determining the size of the sweet spot is the shape of the frame, the ISO design makes the sweet spot of the racket larger than the traditional shape, 32% larger to be exact, and the sweet spot of the racket with the ISO-MF design is a little bit larger than the normal ISO, of course, it is not true that the bigger the head is the better, the bigger the head is, the bigger the head will bring the negative impact on the torque and the weight, the ISO head shape is further subdivided into two kinds of racket. One type of head has 8 holes and is commonly known as the “big square head”, such as the YONEX Ti-5, VICTOR LEADER, etc. The other type has 6 holes and is commonly known as the “big square head”.

The other type has 6 holes and is commonly known as a “small square head” with a slightly larger frame, such as the YONEX Ti-6, Ti-8, etc. They are different in appearance, but there is no difference in performance. In the case of the same tension string, the ISO head has a little more bounce, while the normal ovoid head feels tighter on the string, so you will find that the same string, the same tension in the ISO racket when the string life is longer. At the beginning I thought that the square head racket was not very good looking, but after I used it, I found that in defence and especially in catching kills, you will appreciate the advantages of the ISO racket, and in kills, it is a little bit worse than the traditional ovate head racket, but the overall performance is much higher, especially when the point of impact is not in the middle of the racket face, you can deeply appreciate the advantages of the ISO racket. That’s why more and more players are using ISO rackets, and it should be said that ISO rackets are the direction of development of badminton rackets. If you are buying a racket now, my opinion is to try to buy a product with ISO head shape.

II. The relationship between stiffness, torque and ball control Stiffness

The ball remains on the racket for only four to six thousandths of a second when it is struck. During the pre-stroke swing and when the racket hits the ball, there is a bending and recovery process and the ball flies off the face of the racket 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 a greater hitting power. The stiffer the shaft, the less power is transmitted to the ball, but the more vibration is transmitted to the ball. For the frame, the stiffer the frame, the less likely it is to deform and twist when it contacts the ball, the more power it can transmit to the ball, and the less vibration it transmits.

Torsion: Torsion 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 shot. The stiffer the shaft and frame, the more stable the directional control and the stiffer the racket, the less 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 (landing point) 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 amount of strength. Regular rackets have some indication of the hardness of the shaft, e.g. VICTOR will mark flex-18 or 17, 18 is softer and 17 is not marked, YONEX marks half of the shaft in the brochure and none on the racket body, the way is a 5-point system, the higher the score, the harder the shaft (yy racket classification list). If it’s not marked, you can get a rough estimate from the material, High Modulus Graphite is stiffer than Graphite/Carbon. When selecting a racket, you can also bend the shaft by hand to try the hardness, and note the point at which the shaft bends, 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 the torque of the racket, and note that you have to exert yourself to appreciate it. In general, now the racket shaft has a tendency to become softer while the racket frame has a tendency to become harder, YONEX now produces racket shaft hardness than a few years ago to be much softer. I think the softer shafts are more suitable for amateurs.

III. Weight, Balance Point and Length

Each racket should be marked with its weight, generally the common marking method for U, 2U, 3U, some manufacturers use their own marking, such as: Victory (VICTOR) rackets, its weight is marked as W1, W2, etc. Corresponding to the 2U, 3U, but the most common is still the former. Most full carbon rackets are 2U (90-94g) or 3U (85-89g), while aluminium framed rackets are generally above U (95-99g), but there are a few full carbon rackets with weights as low as 80g, such as the SR and SA models of the YONEX ISO-SWING-POWER-500, which weigh only 81g. Heavier racquets are suitable for players with good power and an attacking game, while lighter racquets are more suitable for players with a defensive game. If you are more of an attacker, a 2U racket is better, but if you use a 3U racket, you will feel that the racket floats a bit 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 point 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 centimetres and inches. According to the principle of mechanics, the weight is proportional to the feeling of swinging the racket, while the balance point is square proportional to the feeling of swinging the racket. Head-heavy rackets, due to greater inertia of the racket head, can hit the ball more powerfully, but the flexibility of swinging the racket is a little less, which is more suitable for attacking and at the same time, it is also the choice of those who are not strong enough to choose the racket, because head-heavy rackets, although it reduces the speed of your stroke, but it can make it easier for you to hit the ball to the back of the court. The lighter head racquets are more flexible, but hit the ball with less power, and the vibration transmitted by the racquet will be larger, not for players who hit the ball hard, more suitable for defensive control players and players who pursue speed, because the speed of continuous swing of this kind of racquet will be much faster. Of course, if you have the power of a professional, you can use a head-heavy racket for power and speed, which is why we find that the same type of professional racket is heavier than the one we buy for commercial use! In order to accurately control the balance point, a high-quality racket in the shape of the racket handle will be installed in the balance of the weight, the bottom of the handle of the plastic bottom handle removed, you will see the lower part of the wooden handle to say that 1/3 of the length of the handle for the hollow cylinder, inlaid with a plastic stick mounted, its purpose is to adjust the centre of gravity of the racket, so that the same type of racket has the same balance point.

However, with the advancement of technology, many new rackets can have the same balance point (within the permissible error range) without the use of the balancer, which is the basic requirement of a good quality racket, through the precise control of the production process.

It should be noted that the above weight and balance point descriptions are for a brand new racket, without stringing and without additional skins or other additions.

The length of a standard racket is 664 mm, while an extension is generally 674 mm.

The main part of the extension is the shaft and the handle, and in some models the frame is also slightly extended. The biggest advantage of an extended racket is that it increases the point of impact and the flick of the shaft. The biggest advantage of the extended racket is that it raises the point of impact, which enables the racket to hit the ball at a greater angle of attack and accelerates the speed of the ball, and to a certain extent increases the aggressiveness and expands the catching area, so if you like to kill the ball, the extended racket is indeed a good choice. At the same time, it should be noted that longer rackets are more likely to cause wrist and arm injuries than ordinary rackets, and the flexibility of the racket is also reduced, especially for the handling of close ball will give you a little trouble. Overall, however, it seems that badminton development is now mainly about attack, so there are now more and more extended rackets!

IV. SIGNIFICANCE OF CLAP FRAME SECTION AND JOINTS The section of a clap frame has the following three basic forms

Semi-circular section, multi-faceted section and parallel section.

The MP series of rackets introduced by YONEX is based on these three types of cross-section with an improved design of the grooves – see MusclePower technology for more details. The box section is an earlier design, which has the advantage of excellent ball control, but has a higher aerodynamic resistance to swinging the racket. Wing section is a later and most common design, its advantage is that the air resistance is small, swing faster and easy to hit fast, fierce back to the ball, due to the thin section of the ball control is slightly insufficient, however, modern badminton technology is more in pursuit of fast, fierce so this design is more favoured. The third semi-circular cross-section design is mainly seen in YONEX CARBONEX early and low-end products such as: CARBONEX 6 models and CARBONEX 8300, 8200, 8000, etc., it should be said that this design is the badminton racket from the aluminium frame to the full-carbon transition is the design of the cross-section shape and the cross-section of aluminium-framed racket is basically the same, the process of production is relatively easy. However, at a later stage, YONEX reduced the cross-section and used it for its SLIM rackets, such as the ISO-SLIM10 racket, which has the following characteristics: the frame is only 9mm wide and 5.5mm thick, and from the cross-section point of view, it is 25% slimmer than the traditional racket frames, which can reduce the wind resistance and increase the hitting speed. The downside is that the strength and torsional properties of the frame are reduced. My personal feeling is that the SLIM10 is better suited for singles and not so good for doubles. In the actual racket, in addition to a single frame cross-section design is often used in a combination of frame design, such as: CARLTON’s several models using a variable width design, that is, the frame are used in the wing design but the head part of the frame is about 20% wider than the lower part of the frame, used to increase the racket’s attack power. PRO-KENNEX LEGENDARY DESTINY model YONEX’s VF series has a box section at the lower part of the frame and a wing section at the upper part of the frame to improve the overall performance of the racket.

YONEX’s MPF adopts a muscular (or wavy) design at the stringing grooves of the racket, which changes the stress distribution of the frame and the strings to improve the performance of the racket.

There are T-shaped and Y-shaped joints, and there are built-in and external joints.

Before introducing these joints, I would like to make a clear idea, nowadays the full carbon badminton rackets are all in one piece from the appearance, in fact, most of the high-quality rackets are using the built-in joints, and only a very few of the rackets are using the jointless-less process, such as the YONEX CARBONEX-8000 my feeling is that the racket’s torsion is poor. As badminton requires a high degree of accuracy in hitting the ball, the frame and shaft are made separately and then connected by joints to better control the quality, weight and balance of the racket. The appearance of external joints originated from the emergence of aluminium-framed rackets. External joints are good in terms of strength and torsion, but they are heavy and have concentrated stresses at the joint and the frame, making them the most prone to breakage in aluminium-framed rackets. Although it is mostly used in aluminium framed rackets, there are also examples of it being used in full carbon rackets: VICTOR’s APOLLO model is a full carbon racket with external T-joints, which was a transitional solution to VICTOR’s immature technology of producing built-in T-joints at that time. The built-in head is made of high-strength carbon fibre, and is integrated from the shaft and frame, which overcomes the drawbacks of the external head, but requires a higher level of craftsmanship.

It is mainly used for full carbon rackets and aluminium frame and carbon shaft integrated rackets.

Y-shaped joint is the idea and patent of the American PRINCE company, and T-shaped joints compared to its joints due to the strings into the area of the short, theoretically, its stress distribution performance is better than the T-shaped head of the greater strength, the middle of the length of the main strings to increase the length of the elasticity of the better. 96-98 when the market using the Y-shaped joints of the racket is more often seen, and some of the domestic low-grade products are also used in the external Y-shaped joints, mainly to create a point of sale. The main purpose was to create a buying point. The only high-grade brand PRINCE Y-shaped connector, I tried to play a friend of a PRINCE racket did not have any special feeling, and friends have always regretted buying this racket, feel the feel of various aspects and YONEX racket gap.

In the purchase of feather racket according to your playing style, choose the right frame shape on your technical play is a certain role, generally speaking wing section is now the mainstream, for doubles and hit an offensive return more advantageous, while the box section can be better ball control. With the development of material technology, the thin box section is now more often found in the high-end models of rackets, the fight for faster hitting speed and better return control performance is the eternal direction of the development of rackets. For connectors, it is best to have in-built connectors, T or Y shaped connectors will not make much of a difference.

V. The relationship between materials and rackets

Before the 70’s racket materials were almost exclusively wood and steel tubes, in the 70’s aluminium alloys were used, nowadays it is a world of new materials such as carbon fibre, titanium alloy, high strength carbon fibre, etc. Because these materials are lighter, stronger and more durable, they also absorb more vibration and shock, and at the same time allow racket manufacturers to have more room for manoeuvre in designing racket stiffness, ball feel and stroke performance.

When shopping for a racket, it is best to first look at the racket is made of what materials, generally in the racket shaft and frame will be marked with its manufacturing materials, sometimes the same such as: YONEX ISO-800TOUR shaft has High Modulus Graphite (high strength carbon fibre) frame has the same label, while some racket shaft and frame materials are not the same, while the racket shaft and frame materials are not the same, and the racket frame materials are not the same. Some racket shaft and frame materials are different, such as: YONEX ISO-250LONG shaft for High Moudulus Graphite racket frame for Graphite (carbon fibre). There are also rackets with the same material for the shaft and frame that are only labelled All Graphite or All Graphite racket in one place of the frame or shaft. the labelling of the regular products is accurate and reliable, while the labelling of the fake products is printed randomly, which is generally made of poorer carbon fibre cloth, with a big difference in density, purity and the regular products, so the cost is very low. What material is used in the product is an important factor in determining its price, the following table can let you know the performance and approximate cost of several materials:

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

VI. Characteristics of each type of racquet:

Y Faster ball speed Bigger sweet spot Less torque More flexibility More vibration dampening Better directional control Better depth control