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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. [2] [3]
Static spine is the stiffness of the center portion of the shaft under static conditions. [19] The Archery Trade Association (ATA) (formerly the Archery Manufacturers and Merchants Organization (AMO)) static spine test method hangs a 2-pound (0.91 kg) weight from the center of a 26-inch (0.66 m) suspended section of the arrow shaft.
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.
PSE Archery, Inc. is an American archery supply company, and a designer and manufacturer of bows, arrows, and other equipment. The company was founded by Pete Shepley [ 1 ] in Mahomet, Illinois , and has its corporate headquarters in Tucson, Arizona .
Lemuel Howard Hill was born in Wilsonville, Alabama, in 1899, the youngest of Mary E. (née Crumpton) and John F. Hill's nine children.[2] [5] Growing up on a cotton farm, Howard learned how to use various tools, along with weapons of all types, including bows and arrows that his father made for him and his four older brothers. [1]
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.
A compound bow is fitted with a special type of arrow rest, known as a launcher, and the arrow is usually loaded with the cock feather/vane pointed either up, or down, depending upon the type of launcher being used. The bowstring and arrow are held with three fingers, or with a mechanical arrow release.
Traditional target arrow (top) and replica medieval arrow (bottom) Modern arrow with plastic fletchings and nock An arrow is a fin-stabilized projectile launched by a bow.A typical arrow usually consists of a long, stiff, straight shaft with a weighty (and usually sharp and pointed) arrowhead attached to the front end, multiple fin-like stabilizers called fletchings mounted near the rear, and ...
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