‘Bowtypes’ Info
Info for different styles of bow
A compound bow is a modern bow that uses a levering system, usually of cables and pulleys, to bend the limbs.
The limbs of a compound bow are much stiffer than those of a recurve bow or longbow. This limb stiffness makes the compound bow more energy-efficient than other bows, in conjunction with the pulley/cams. The 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. When the draw commences, the archer has reduced mechanical advantage, but during the draw, as the pulley cams rotate, and the archer gains mechanical advantage over the bending limbs, more energy is stored, in comparison to other bows.
The use of this levering system gives the compound bow a characteristic draw-force curve which rises to a peak weight and then “lets off” to a lower holding weight.
The compound bow is little-affected by changes in temperature and humidity and it gives superior accuracy, velocity, and distance in comparison to other bows. The compound bow was first developed in 1966 by Holless Wilbur Allen in Missouri, and a US patent was granted in 1969. The compound bow has become increasingly popular. In the United States, the compound is the dominant form of bow.
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A recurve bow has tips that curve away from the archer when the bow is strung. By definition, the difference between recurve and other bows is that the string touches a section of the limb when the bow is strung. A recurve bow stores more energy than an equivalent straight-limbed bow, because more energy is stored and delivered more efficiently, giving a greater amount of energy and hence speed, to the arrow. A recurve will permit a shorter bow than the simple straight limb bow for a given arrow energy and this form was often preferred by archers in environments where long weapons could be cumbersome, such as in brush and forest terrain, or while on horseback.
Recurved limbs also put greater strain on the materials used to make the bow, and they may make more noise with the shot. Extreme recurves make the bow unstable when being strung. An unstrung recurve bow can have a confusing shape and many Native American weapons, when separated from their original owners and cultures, were incorrectly strung backwards and destroyed when attempts were made to shoot them.
Tags: Archery, Bow, Recurve
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A longbow is a type of bow that is tall (roughly equal to the height of the person who uses it); this will allow its user a fairly long draw, at least to the jaw. A longbow is not significantly recurved. Its limbs are relatively narrow so that they are circular or D-shaped in cross section. Flatbows can be just as long; the difference is that, in cross-section, a flatbow has limbs that are approximately rectangular.
The longbow is based on the late medieval English longbow in use during the 12th to 16th centuries. The historical longbow was a self bow, often made from yew. Modern longbows may also be made from modern materials.
Organizations which run archery competitions have set out formal definitions for the various classes; many definitions of the longbow would exclude some medieval examples, materials, and techniques of use.[1][2] According to the British Longbow Society, the English longbow is made so that its thickness is at least ? (62.5%) of its width, as in Victorian longbows, and is widest at the handle. This differs from the Medieval longbow, which had a thickness between 33% and 75% of the width. Also, the Victorian longbow does not bend throughout the entire length, as does the medieval longbow. Longbows have been used for hunting and warfare, by many cultures around the world, a famous example being the English longbow, during the Middle Ages.
Tags: Archery, Bow, longbow
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