1. See if the feathers of the badminton are evenly distributed
Color dark and white
For a good badminton, the hair leaves must look uniform and round, and the feathers are not slanted. This is the most intuitive way to judge badminton. Many people think that as long as the feathers are whiter, it is enough. In fact, it is not. Before production, badminton is full of dust and dirt from duck and goose blood. Stability has no direct impact.
2. See if there are moths on the feathers of the shuttlecock
Once there are moth-eaten and insect-eyes on the shuttlecock, it means that the feathers are no longer attached. Once killed by high-intensity, the hair leaves will fall off, and the shuttlecock can no longer be played.
3. Pay attention to the thickness of the badminton hair shaft
Many people think that the badminton hair shaft is thick enough, so that it is durable. Although the thick hair shaft is durable, it will increase the weight of the feathers, the hitting feeling is heavy, the landing point is inaccurate, and the hitting feeling will be lowered by a notch. Generally, the price of the ball with thick shaft is not very high. However, it is not good if it is too thin, it is light and not resistant to beating.
Fourth, pay attention to whether the glue is uniform
glue evenly
Generally, good quality badminton will pay attention to the uniformity of the line glue (the glue of the coil) and the bottom glue (the glue of the position where the hair rod and the ball head are connected). Pay attention to whether the glue is uniform, and whether there is wire drawing and agglomeration
Five, pay attention to the speed of badminton
Ball speed refers to the distance that the badminton flies when hit with the same force. It is generally divided into 74, 75, 76, and 77 speeds (unit: Green). In general areas, the altitude is below 600, and it is recommended to use 77 speed, and the altitude of about 1000 meters is recommended to use 76 speed. Speeds 74 and 75 have been recommended above 2000 meters. Of course, speed is also affected by temperature and humidity. The lower the temperature, the greater the atmospheric pressure, and a slightly faster ball must be used. The higher the humidity, the greater the air resistance, and the ball speed has to be slightly faster. With the exception of the High Wishes area, the speed is 74 and 75 all year round.