Explain badminton in detail
Badminton is made of natural materials, artificial materials or their mixture. It is divided into family balls, competition balls and all-plastic badminton. 16 feathers are fixed on the ball support. Feathers are 62-70 mm long, and the length of each ball’s feathers from the ball support surface to the feather tip should be the same. The top of the feather is in a circle with a diameter of 58-68 mm. Feathers should be tied with thread. The bottom of the ball holder is also spherical with a diameter of 25-28 mm. The weight of the ball should be 4.74-5.50g.. The flying speed of badminton in the same area mainly depends on its overall weight, caliber, hair type, the difference between the left and right hairs, and the weight ratio of the ball head to the ball body. The flying speed of badminton with the same weight will be very different in different areas, because the weight of the ball used is closely related to altitude and climate. First of all, let’s talk about badminton porn!
As we all know, badminton wool is divided into duck hair and goose hair. 80% of the balls in our domestic market are duck hair. Xiaobian will focus on duck hair balls today.
Common duck feather balls are generally used:Water duck, cherry duck, ostrich duck, Taiwan duck, dolphin duck. Among them, porpoise, water duck and bonito duck are the most common. It is said that most of the Ashilong badminton we are most familiar with is made of the wool of an ostrich duck.
Badminton wool specifications are divided into the following categories:Full circle, generous, Chinese, small square, and unilateral. The flying stability of the whole sphere is the best, and the flying stability of the single side is the best and the flying is the worst. Flying from left to right decreases in turn, and the hitting resistance increases in turn.(digression, recently, badminton fans have been sending messages asking me what kind of ball is good for flying. I can’t answer this question, so I will answer it in general, which should be counted as Chinese ball. Due to the characteristics of badminton, the perfect ball that is very resistant to flying has not yet been produced.) This article is also a solution for everyone.
▼The following specifications are attached for your reference.
▼ Full round duck hair slices, complete hair slices, pure white hair color, 16 hair slices weighing 1.8-2.1g
▼ Dafang duck hair slices, the small side of which is greater than or equal to 5.5mm
▼ Chinese duck slices, the small side of which is 4.0-5.4 mm.
▼ Small duck slices, the small side of which is 3.0-3.9mm
70% of the price of badminton depends on feathers, so the ball head will account for the remaining 25%.
Badminton ball heads are generally divided into four categories:All-natural cork ball head, triple ball head, double ball head and foam ball head..
All natural cork ball head:It belongs to the best ball head, which is used in the Olympic Games, but it is more luxurious for us to play ball.
Triple ball joint:Sanpin is three kinds of compound ball heads, namely cork, table fiber and hardwood, which are commonly found in badminton balls above 70 yuan.
Double ball joint:There are many domestic markets for double-splicing, such as composite cork ball heads, recycled cork ball heads and Taiwan fiber hardwood ball heads. The worst is all hardwood, and the balls around 60 yuan are basically double-ball heads.
Foam ball head:This kind of ball is usually sold in a small supermarket, which should not be regarded as a real badminton.
▼ The picture below shows the double composite cork ball head.
We’ve finished talking about the wool film and the ball head. Let’s talk about glue. Each company has its own unique formula. Japan’s ball-making technology can be said to be the world’s leading, and its glue is said to cost 800 yuan a catty. However, the glue cost of many domestic manufacturers ranges from tens of yuan to 200 yuan a catty. At present, there are basically three kinds of glue in China: first, nitrocellulose glue, chemical glue, second, resin glue, environmentally friendly natural glue, and third, the best mixed glue, nitrocellulose+resin glue, which is better, but has a heavy and pungent taste. Each has its own unique performance, and it is unclear who is good and who is bad.
In fact, there is nothing to say about cotton thread. The price is not high, and the consumption is not large, which is similar. 70% of the price of badminton depends on the price of porn, but nowadays porn is really expensive. It is soaring all the way!
The flying speed of badminton is directly related to the weight of the ball. The heavier the ball, the faster the ball speed. The flying speed of badminton is generally indirectly expressed by the weight of the ball.
For example, Li Ning uses 74, 75, 76, 77 and 78 to mark the ball speed, while the winners use 76, 77, 78 and 79 to distinguish the speed. Now the YONEX brand commonly used in international competitions is mostly marked with simple numbers from 0 to 5. The smaller the label number, the lighter the ball weight, the slower the ball speed, and vice versa.
How do golfers choose the ball speed? The following small series will explain it one by one.
1. High temperature and low speed, low temperature and high speed
In summer when the temperature is high, the average indoor temperature is above 28.5℃ due to the high air density. At this time, 76 speed with a slightly slower speed is usually selected, 77 speed is usually selected in spring and summer when the temperature is around 21.5-28.5℃, and 77 speed with a faster flight is usually selected when the indoor temperature is around 10-15℃ in autumn and winter (the temperature is usually around 15-18℃ due to heating in the northern area).
2. High pressure and high speed, low pressure and low speed
The higher the altitude, the lower the air pressure, the smaller the air resistance, and the slower the ball speed. For example, the average altitude of Yunnan-Guichuan and Shaanxi-Gansu-Ningxia is 1000-2000 meters, so the slow ball with the speed of 74 and 75 should be selected relatively, while the average altitude of the middle and lower reaches of the Yangtze River, South China and North China is below 500 meters, so the suitable ball speed is between 76 and 78.
3. High drying speed, low humidity speed
Humidity will also affect the ball speed. Generally, the high water content of the ball in high humidity air will be slightly heavier, and the ball speed will be slower. In dry places with low humidity, the water content of badminton will be slightly lower, and the speed will be slightly higher. The air humidity in Sichuan Basin, the middle and lower reaches of the Yangtze River and South China is high in spring and summer, so 76-speed balls will be used more. In northern areas, it will be cold and dry from November to February, so 78 or 79-speed fastballs should be considered.
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(Source: Music Badminton)