2. shuttlecock shuttlecock 2.1 may be made of natural materials. Or synthetic materials The ball is made of any type. Characteristics common way of running Must be the same ball, which is made of natural fur. The base is wood, cork, Leatherback Some 2.2 Shuttlecock with feathers to embroidered on a base 16 2.3. Measured from tip to tip of the base. The length of each fur balls are equal between 62 mm to 70 mm, 2.4-tip spread in a circle. A diameter of between 58 mm to 68 mm 2.5 to bind tightly with yarn hair. Or other suitable material 2.6 The base of the ball must have a diameter of 25 mm to 28 mm and the bottom, rounded 2.7. Shuttlecock from 4.74 to 5.50 grams, weighs 2.8 shuttlecock did not use a natural bristle 2.8.1. Using synthetic materials instead of natural bristle 2.8.2 client base, as defined in Rule 2.6 2.8.3 The size and weight of the child must be as set out in Article 2.3, 2.4 and 2.7, however, the difference in specific gravity. And the properties of synthetic materials in comparison with natural hair. Allow the difference up to 10% due to a 2.9 defines the difference in the typical manner. Running speed and trajectory of the ball may change the above features. Even without the approval of the national organization involved in conditions where high pressure or weathering. As a result, the shuttlecock according to the standards prescribed inappropriately.
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