What number do beginners choose for badminton practice?

Generally, we choose No.7, which can be used as both a game ball and a training ball.

Choose badminton

For an excellent badminton player, it is equally important to buy badminton, badminton racket and badminton line. Let's first find out what material badminton is made of. Badminton is divided into advanced competition balls and peacetime training balls, both of which are indoor balls. Indoor balls are sometimes used for outdoor training activities, but foam heads and plastic balls are more suitable.

First of all, badminton is made of natural or artificial materials.

Materials or a mixture of both. Its specifications, weight,

The flight speed is:

(1) style specification:

Badminton should be inserted with 16 feathers on a hemispherical cork ball holder. The cork bracket has a diameter of 25-28 mm, a round bottom and a thin layer of white leather or similar material. The length of the feather from the supporting surface to the feather is 64-70mm. The upper end of the feather is round, with a diameter of 58-68 mm It is at 1. 25cm and 2. The ball is supported by 5cm, the feathers are fixed with thread or other materials, and nylon balls made of foam can also be used in general competitions.

(2) Weight:

The weight of the ball should be 4.74-5.50g. ..

(3) Flight speed

When the player touches the top with his low hand from the baseline.

The ball is parallel to the sideline and can fall.

Within 53 ~ 99 cm of the other end line, the ball's flight speed should be considered normal.

In ordinary grass-roots games or informal games, when the ball is too light or too heavy, the ball speed is too slow or too fast, the following measures can be taken to make the ball fly normally with the consent of the organizer.

⑴ When the ball is too light and the ball speed is too slow, you can add 1 ~ 2 small nails in the middle of the ball holder to increase the weight of the ball holder and make the ball speed faster. You can also turn the sign inward to narrow the caliber and increase the speed of the ball.

⑵ When the ball is too heavy and the ball speed is too fast, a part of cork can be removed in the middle of the ball tray to reduce the weight of the ball tray and slow down the ball speed, or the feathers can be folded outward to increase the caliber of the badminton to slow down the ball speed.

Matters needing attention in purchasing badminton

1, distinguish the types of badminton:

Badminton commonly used at home is usually used outdoors, and it is called red-headed badminton in shops. Because the base of this ball is made of red rubber, it is easy to play and has good elasticity, so it can be played far without much effort.

The game ball is white-headed badminton, also called indoor badminton. The materials used for its base are cork inside and white sheepskin outside, and the selection and production are very strict.

All-plastic badminton, each ball is a whole, its manufacturing process is very simple, there is no need to knit and bind, there will be no problem of hair loss, and the cost is relatively low, but it is not as good as the first two.

2. Criteria for choosing badminton.

It depends on the quality of the badminton base. The rubber thickness of the red ball should be uniform and glued firmly. The cork of the white ball should be 25mm in diameter, round in shape, soft in wood, and thin and strong in sheepskin film. When choosing the elasticity of the ball holder, you can pinch it by hand or gently lift the ball on the racket several times.

According to whether the feathers are fastened, each badminton is required to fasten 16 feathers. The best feather is goose feather. Because the goose feather tube is hard, straight and durable, the falling speed meets the standard. Chicken and duck feathers are not as good as goose feathers. Its fin tube is thin, the wall is thin, and it often bends. When choosing feathers, the whiter the feathers, the better (except specially dyed ones). Feather length should be 60 ~ 70 mm, the length should be the same, the interval should be even, the feather thickness should be the same, and there should be no problems such as inverted hair, broken stem and moth-eaten, otherwise the ball will not go right.