![]() ![]() On past, one could drill additional holes on other parts of the bowling ball, to take additional weight off of a portion of the bowling ball, such as an axis hole that allows the bowling ball's hook to stabilize during its roll to the pins. Most bowlers use three holes (thumb and two fingers,). Under USBC regulations, one can drill up to five holes on the bowling ball. For a beginning bowler, the professional will usually drill the ball with the label directly in the middle, and between the fingers and thumb holes, causing the weighting to be balanced on both sides, causing the ball to roll straight. A bowling shop professional can drill a bowling ball by first knowing the type of roll the bowler wants, and then can pick out the bowling ball with the weighting specifications in mind that match the bowler's needs. Bowling balls ship with the weighting specifications on the container. Illegally, one can play with the weighting of the bowling ball, such as drilling the ball so that there is more side weight on the right side of the ball (for a right-hander,) which would cause the ball to pull from right to left, causing a hook. The second way to produce a hook is by modifying the bowling ball. Some bowlers, including professionals, will actually roll the bowling ball with just the two fingers, allowing the hand to give the ball even more torque without having to worry about the thumb restricting the spin. Of course there are innumerable variations in style and technique and the position of the thumb can vary from person to person. When the two fingers lift the ball correctly, it will cause the thumb to naturally fall out of the ball first, so one does not have to make a conscious effort to remove the thumb before the fingers. This release technique gives the bowling ball its spin needed for the hook. The two fingers releasing while rotating is called "lift," where this type of a release gives the roll more torque and therefore more power. And then, the middle and ring finger release almost simultaneously, again in a counter-clockwise direction. The thumb must fall out of the ball first. Just before releasing the ball, the entire hand starts rotating in a counter-clockwise motion. At the moment of throwing the bowling ball, the hand should be behind the ball and where the thumb (for a right-hander) is anywhere between 10-o'clock and 12-o'clock, and the two fingers are between 4-o'clock and 6-o'clock. The first method involves bowling technique. The texture of ball surfaces-measured in " grit" of abrasives used-affects ball path (skid distance and hook). In duckpin bowling, candlepin bowling, and nine-pin bowling, hook potential is greatly reduced since the balls are generally rolled much faster and thus have less time for a hook to develop. A hook ball can achieve strikes with less precise hits.Ī hook ball can also help the bowler shape the shot on challenging oil patterns. Straight roll - even when it hits the pocket, will tend to leave a tap such as the 5-pin on a light hit, or the 10-pin if the ball was just slightly right of center pocket or with inadequate entry angle. By hooking the ball, the ball will hit the pins with more force, producing better carry - especially on the 5-pin during a strike ball. When a ball is rolled straight, hitting the pocket must be precise. The purpose of the hook is to give the ball a better angle at the 1-3 pocket (right-handers) or 1-2 pocket (left-handers.) to achieve a strike. Ī hook in ten-pin bowling is a ball that rolls in a curving pattern (as opposed to straight). ![]() Technological advances since the early 1990s in ball design have allowed dramatically increased hook potential and strike frequency, without requiring additional skill on the part of bowlers. Bottom: Though the ball's translational speed down the lane (brown arrows) decreases, its rotational speed (yellow arrowheads) increases.Middle: Hook is enabled by side rotation as the ball frictionally engages dry lane surface as it nears the pins. ![]()
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