Shuttlecock

The ball used in badminton is commonly called a shuttlecock or shuttle Cock ( colloquially or generalized as badminton ). There are natural and synthetic shuttlecocks shuttlecock (also known as nylon balls) two different types of shuttlecocks. In English-speaking and the spring football game is designated Shuttlecock.

Terms

After the valid rules (as of 1 August 2006), the following terms for the Shuttlecock be used:

  • Game ball (point 2)
  • Ball ( in the rest of the rule).

Shuttlecocks

The valid rule defines a shuttlecock as follows:

  • 2.2. Badminton:
  • 2.2.1. The shuttle shall have 16 feathers fixed in the base.
  • 2.2.2. The springs must have a uniform length of between 62 mm and 70 mm, measured from the tip to the top of the base.
  • 2.2.3. The tips of the springs have a circular form with a diameter of 58-68 mm.
  • 2.2.4. The springs must be fastened firmly with thread or other suitable material.
  • 2.2.5. The base shall have a diameter 25-28 mm and rounded on the bottom.
  • 2.2.6. The shuttle shall weigh between 4.74 g and 5.50 g.

Expensive varieties possess an expensive cork, which comes mainly from Portugal. Shuttlecocks are partly made ​​by hand - what the price is justified. A Shuttlecock with real feathers cost of 1, - € upwards. This and the fact that the shuttlecock can be easily damaged - for example, if the ball was hit unhappy - is what can make the sport badminton so expensive.

There are only processed goose and duck feathers. Goose feathers are high quality, but break more easily in the quill. The keel of duck feathers is more stable, but the spring rays are less durable and the ball fray. According to the manufacturers for shuttlecocks only coverts are used, which are obtained as a by-product of the poultry slaughter.

Plastic shuttlecocks

A nylon or plastic ball is described in the valid rules as follows:

  • 2.3 Plastic Ball:
  • 2.3.1 The skirt, or simulation of feathers in synthetic material replaces the natural springs.
  • 2.3.2 The base is described in Rule 2.2.5.
  • 2.3.3 Dimensions and weights must be like in the rules 2.2.2, 2.2.3 and 2.2.6.

Nylon balls are determined for three different speeds, which are identified by a colored ring on Korkfuß the ball: 'red' indicates the highest speed, blue ' the mean, green the lowest speed and yellow as intermediate. In the German competition being is up to the second lowest class (see: Divisions in badminton ) partially played with nylon balls. In the classes about shuttlecocks are used.

Of ball

Due to the different storage, humidity, ambient temperature, spring thickness and Korkgewicht shuttlecocks have no standard flight behavior in general. Shuttlecocks are therefore tested using the manufacturers of ball machines. The balls are assigned to the speeds and qualities according to flight length and flight stability. In Central Europe, the rate is 77 grains most commonly.

The colder the room, the higher the speed should be:

  • Halle temperature: 26-30 ° C - Speed: 76 grains
  • Halle temperature: 20-25 ° C - Speed: 77 grains
  • Halle temperature: 14-19 ° C - Speed: 78 grains

[1 grain = 64.798910 mg ]

To determine the flight characteristics of the ball is struck before each game; the ball is hit with a " full underhand stroke " from the back service line of the field in the opposite half of the pitch and found the flight distance. The rule says: "A ball lands correct speed not less than 530 mm and not more than 990 mm from the opposite rear boundary line located on the ground." If the ball comes beyond these limits to the ground, he is with the opponent adjusted after notification by a buckling of the springs at the upper end in speed. Usually balls are fast, then the springs at the upper end are bent outward to make it slower. For the buckling there are different rules:

  • Each spring kink
  • Every fourth spring NOT bend,
  • Every other spring kink and
  • Every fourth spring kink.

A bent ball goes faster than a broken unchanged ball therefore better balls at the correct speed should be bought. In the game reaches a ball to about 290 km / h In a special double s 40 in 20 of the ball at times - be up to 50 times beaten. The world record for Smash lies at 421 km / h

Cork (material) Velocity
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