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Faizan
If you are planning on pursuing high-performance bowling, you'll need to know the difference between symmetrical and asymmetrical bowling balls. The way you bowl is highly influenced by the type of ball you use; you can change your game simply by having a bowling ball driller customize your ball. Bowling ball manufacturers can give you large amounts of technical information about their balls. Do your research, and decide for yourself which type of ball will enhance your game.
Construction
Made of plastic, urethane, reactive resin or a combination of all three materials, bowling balls have a maximum weight of 16 pounds and a maximum diameter of 8.6 inches. Bowling balls consist of a hard outer shell and a weight block in the center. The weight and shape of the ball's core affects how it curves as it rolls toward the pins. The weighted core may be symmetrical or asymmetrical.
Indicator Pin
When a bowling ball is made in the factory, the ball's core is held in place with a small rod that suspends it in the middle while the molten plastic (or cover stock) is poured into the mold. The cover stock hardens, and then the rod is pulled out of the ball. This leaves a small hole in the ball that must be plugged up. The hole is filled with plug material, and the little spot the plug material makes on the surface, the "pin," marks the ball's center of gravity. Symmetrical balls have one indicator pin, while asymmetrical balls have two; the second is a PSA indicator pin, which is also sometimes called the mass bias location. The location between these two pins tells the bowler where the mass of the core is located, which will help her know how the ball will behave.
Degree of Control
Because symmetrical balls roll in a smooth line down the lane, the bowler has a greater degree of control over the path of the ball. Asymmetrical bowling balls curve as they make their way down the lane, and the bowler has less control over the ball's course. With time and practice, however, a bowler can come to learn how a particular asymmetrical ball will behave in a given situation, and the ball may actually give the bowler an edge because it can curve at tighter angles than a symmetrical ball can.
Ball Drilling
Bowlers can get their bowling balls custom drilled by a professional bowling ball driller. The advantage of doing this is that the ball can be customized to the bowler's style, making the most of his strengths and minimizing his weaknesses. Any bowling ball, asymmetrical or symmetrical, can be drilled, but all balls that have been drilled are asymmetrical. Once a ball has been drilled, it will no longer behave like a symmetrical ball. It will curve.
Construction
Made of plastic, urethane, reactive resin or a combination of all three materials, bowling balls have a maximum weight of 16 pounds and a maximum diameter of 8.6 inches. Bowling balls consist of a hard outer shell and a weight block in the center. The weight and shape of the ball's core affects how it curves as it rolls toward the pins. The weighted core may be symmetrical or asymmetrical.
Indicator Pin
When a bowling ball is made in the factory, the ball's core is held in place with a small rod that suspends it in the middle while the molten plastic (or cover stock) is poured into the mold. The cover stock hardens, and then the rod is pulled out of the ball. This leaves a small hole in the ball that must be plugged up. The hole is filled with plug material, and the little spot the plug material makes on the surface, the "pin," marks the ball's center of gravity. Symmetrical balls have one indicator pin, while asymmetrical balls have two; the second is a PSA indicator pin, which is also sometimes called the mass bias location. The location between these two pins tells the bowler where the mass of the core is located, which will help her know how the ball will behave.
Degree of Control
Because symmetrical balls roll in a smooth line down the lane, the bowler has a greater degree of control over the path of the ball. Asymmetrical bowling balls curve as they make their way down the lane, and the bowler has less control over the ball's course. With time and practice, however, a bowler can come to learn how a particular asymmetrical ball will behave in a given situation, and the ball may actually give the bowler an edge because it can curve at tighter angles than a symmetrical ball can.
Ball Drilling
Bowlers can get their bowling balls custom drilled by a professional bowling ball driller. The advantage of doing this is that the ball can be customized to the bowler's style, making the most of his strengths and minimizing his weaknesses. Any bowling ball, asymmetrical or symmetrical, can be drilled, but all balls that have been drilled are asymmetrical. Once a ball has been drilled, it will no longer behave like a symmetrical ball. It will curve.
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