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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. Compound bows are widely used in target practice and hunting. The pulley/cam system grants the user a mechanical advantage, and so the limbs of a compound bow are much stiffer than those of a recurve bow or ...
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.
let-off (measure) – The difference between a compound bow's holding weight and draw weight. Expressed as a percentage of the draw weight; for example, a bow with a draw weight of 70 lb and holding weight of 14 lb would have 80% let-off. limb-driven rest (equipment) – A drop-away rest that is mechanically linked to one of a compound bow's limbs.
Less powerful bows require arrows with less dynamic spine. (Spine is the stiffness of the arrow. [14]) Less powerful bows have less effect in deforming the arrow as it is accelerated (see Euler buckling, case I) from the bow and the arrow must be "easier" to flex around the riser of the bow before settling to its path.
Allen was born July 12, 1909, in Stilwell, Kansas.In the 1960s, he sawed the ends off a conventional recurve bow and then added pulleys to each end. [1] Allen experimented with a number of designs to apply for a patent on June 23, 1966, [2] and U.S. patent 3,486,495 was granted to him in December 1969.
Hoyt Ruckus. The Hoyt Ruckus is a now-discontinued performance-driven youth compound bow produced by Hoyt Archery.It measures 29.75 in (75.6 cm) axel to axel. It has a huge range of adjustability with draw lengths going from 18–28 in (46–71 cm) at 1 in (2.5 cm) increments.
A bow draw in archery is the method or technique of pulling back the bowstring [1] to store energy for the bow to shoot an arrow. The most common method [citation needed] in modern target archery is the Mediterranean draw, which has long been the usual method in European archery.
Such "Holmegaard style" bows are used in flight archery competitions. For flight bows, an optimum between the length of the stiff tips and the draw force of the bow is desired. If the outer limbs are too long, their weight exceeds the capacity of the energy stored in inner limbs. The outer limbs can also become unstable if made too thin.