The more friction created from this contact usually means more hook potential. The Weight Block of a bowling ball is found inside the ball beneath the coverstock shell. There are two main types of weight blocks— High Mass and Low Mass. And we have only scratched the surface with these brief explanations! Stop into Bowlers Advantage Pro Shop and have one of our trained professionals assist you in your ball selection.
We can also watch you bowl with your current equipment and make recommendations based on your ability and desire. Zirconium is used by one manufacturer for counterweights. Between the early s and the early s, most bowling balls were made of three-piece construction. A small amount of dense material was poured into spherical core mold to create a pancake-like core. Then the remainder of the core mold was filled with a less-dense core material. Finally, the core was centered in a mold and a layer about 1 in 2.
Since being pioneered by manufacturer Faball Inc. When the American Bowling Congress ABC was founded in , one of its primary missions was to standardize the sport by developing equipment specifications.
The current rules require a ball to have a diameter between 8. No minimum weight is specified, and some balls weigh as little as 6 lb about 2.
In response to the dramatic changes in ball designs that began in the early s, the ABC issued additional regulations in For example, the new rules establish limits on the ball's radius of gyration, which is the distance between the ball's rotational axis and its center of gravity.
The rule limits this value to 2. Other ABC specifications govern such technical characteristics as the ball's coefficient of restitution a measure of the energy transferred from the ball to the pins , surface hardness, and hooking potential.
The dramatic innovations in bowling ball design and materials since the early s have been credited with leveling the playing field for bowlers of all sizes and strengths. Writing in Popular Mechanics magazine, John G. Falcioni noted that some bowlers unhappily refer to the new-generation balls as cheaters. He summed up the impact of ball refinements by writing, "The sport has become so sophisticated that knowledge of engineering and physics is likely to prove more helpful in throwing strikes than doing curls with a dumbbell.
Falcioni, John G. Bowling This Month magazine. Now that you know a little more about the different kinds of bowling balls and when to use them, you need to learn how to fine tune your equipment to get maximum performance. Very rarely does a professional use a bowling ball out of the box without adjusting its surface to the lane condition they are competing on. When you are matched up, your strike percentage increases and your scores do too.
The outer core is light, yet rigid, containing substances such as polyester or glass beads, also mixed with a resin. Manufacturers use this part of the bowling ball to fine-tune its final weight. Heavy 7-kg bowling balls are quite dense, but balls weighing 4. When a bowler releases a ball, it skids down the lane through a thin layer of mineral oil. About two-thirds of the way down an meter lane, the ball enters a nonlubricated zone. There, it gains traction like tire treads on a road.
At this point, depending on what type of spin the bowler applied to the ball during its release, the ball can really begin to curve, or hook, across the lane to make the pins scatter. Lane conditions—the amount and pattern of the oil applied to the lane—can vary widely from bowling alley to bowling alley.
And the conditions can change over the course of a game or tournament as balls soak up or spread around the oil on the lane. Kulick says that for professionals who bowl full-time, that number can even go higher.
The most basic of outer shells on a bowling ball is made of polyester. This type of plastic covering is rigid and has low friction, and you use it when you want to throw straight, like when you need to topple just one or two pins to pick up a spare, Speranza says. Balls with a polyurethane shell, on the other hand, experience higher friction with the lane. To make these rough yet pliant shells, which are useful for knocking down many pins at once, manufacturers mix isocyanates and polyols.
These high-friction reactive resin balls were favorites among pro bowlers for nailing strikes—at least until recently. According to Speranza, one of the biggest changes in the sport in the past 10 years is that some pro bowlers now throw the ball with a two-handed release rather than a one-handed release.
One celebrity bowler, Jason Belmo Belmonte had great success with the technique in tournaments and popularized it. To level the playing field and make sure that none of the nearly 46 million bowling participants in the U. Bowling a tournament-winning strike with an ostentatious rose-decorated ball not really designed for the task.
Big Ern was even more of a phenom than the crowd suspected. Contact us to opt out anytime. Contact the reporter.
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