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In modern archery, a compound bow is a bow that uses a levering system, usually of cables and pulleys, to bend the limbs. [1] The compound bow was first developed in 1966 by Holless Wilbur Allen in North Kansas City, Missouri , and a US patent was granted in 1969.
Incorrect dynamic spine results in unpredictable contact between the arrow and the bow, therefore unpredictable forces on the arrow as it leaves the bow, and therefore reduced accuracy. [9] Additionally, if an archer shoots several arrows with different dynamic spines, as they clear the bow they will be deflected on launch by different amounts ...
Like other bows, they lost importance with the introduction and increasing accuracy of guns. In some areas, composite bows were still used and were further developed for leisure purposes. Early modern Turkish bows were specialized for flight archery (shooting for distance).
Competitive archery involves shooting arrows at a target for accuracy from a set distance or distances. This is the most popular form of competitive archery worldwide and is called target archery . A form particularly popular in Europe and America is field archery , shot at targets generally set at various distances in a wooded setting.
The binary cam is a design for the pulley system of a compound bow. Craig Yehle, director of research and development at Bowtech Archery, received a patent [ 1 ] for the design on December 11, 2007. Bowtech started equipping its bows with the new cam design in the 2005 model year.
This limb stiffness makes the compound bow more energy-efficient than other bows, in conjunction with the pulley/cams. The typical compound bow has its string applied to pulleys (cams), and one or both of the pulleys have one or more cables attached to the opposite limb. When the string is drawn back, the string causes the pulleys to turn.