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The USBC and World Bowling promulgate bowling ball specifications. USBC specifications include physical requirements for weight (≤16 pounds (7.3 kg)), diameter (8.500 inches (21.59 cm)—8.595 inches (21.83 cm)), surface hardness, surface roughness, hole drilling limitations (example: a single balance hole including the thumb hole for "two-handed" bowlers [3]), balance, plug limitations, and ...
Pearl reactive: A type of reactive resin ball in which the coverstock has resin or mica particles that roughen the coverstock's microscopic pores to extend the skid length and hook more decisively than solid reactive balls when reaching the dry part of the lane. [62] Perfect game: A game of twelve consecutive strikes (score: 300).
Attempts to convert the 4-5-7 split (right-handed delivery using pearl coverstock bowling ball). Ball approaches at an angle to give the 4-pin enough forward momentum to contact the 7-pin. However, splitting the 4-5 gap too evenly sends the 4-pin sideways toward the gutter without contacting the 7-pin.
A ten-pin bowling score sheet showing how a strike is scored The number of sanctioned perfect (300) games per league bowler has increased substantially since the 1990s. . Freeman and Hatfield posit that the increase in perfect games is due to factors such as the introduction of reactive resin coverstocks, asymmetric ball cores, synthetic lane surfaces, and precision lane oiling mach
Storm Products Inc. is an American company involved in the manufacture and sale of bowling balls and bowling-related accessories. The company headquarters and main manufacturing facility are in Brigham City, Utah, [1] Storm has produced many bowling balls used in the sport by competitive players, [2] and has numerous sponsorship agreements on both the PBA and PWBA Tours.
MOTIV had its beginnings in the 1990s as Wilbur Products, a company that engineered cores for other high-performance bowling ball brands. [2] When its largest customer chose to move its manufacturing from Michigan to Mexico, Wilbur Products embarked on a project to start its own bowling ball production, [3] launching the MOTIV brand in 2009.