Compound Bows

Documents


The Nuts & Bolts of Archery

A guide to  Tuning and Shooting Compound Bows

Arrow Rest Tech 101

Larry Wise,  Arrow Trade Magazine

What’s touching your arrow after the string is released? The answer, of course, is the string and the arrow rest. That makes both of them rather important, doesn’t it? Lots of articles have been written on getting the nock-fit correct and the nocking point located to yield the best groups but this article is about the arrow rest.

Azadeh Kian et al, European Journal of Experimental Biology, 2013, 3(4):103-111 

The main purpose of this study was to compare the ability of archers in two different levels of expertise in controlling the bow during aiming phase. To achieve best control on the bow, the critical point for archers is to use bones, not muscles. Magnitude of postural angles and also total moment in the bow wrist joint can be good indicators of wrist muscles activity. Two female archers in elite and beginner levels of skill had participated in this research. 3-D coordinate data of upper body marker set were collected at 200 Hz using motion analysis system. Hyperextension and ulnar deviation angles during aiming phase were obtained from kinematic analysis. Moreover, moments were calculated by implementing static equilibrium equations to the biomechanical model of archer's bow hand. Results revealed that muscles responsible for hyperextension and ulnar deviation are significantly more activated in the beginner archer 
B. Strydom et al,  The South African Optometrist 69(1) 2010 pp 29-34

The use of optical lenses to increase or magnify a target of concern is commonly used in compound bow archery. The principles and factors that may influence the use of
these lenses may, however, not be fully understood by archers.

Hunting Bow Accuracy Killers
   
Larry Wise

Archery Report

Michael Larson

Equipment reviews, tests and technical articles re compound bows by a mechanical engineer.

Mechanical Release devices and the Compound Bow

Kleanthes Koniaris

2007 Compound Hunting Bow Face off

Anthony Barnham & John Teater


Links


ASTM Dec 2011, DOI: 10.1520/F1544-11

This specification covers the testing technique to determine the rating velocities of an archery bow. Among the test methods are: force draw data, and the shooting test. The test arrow description and the test data correction are also detailed. This specification is not intended to provide any engineering or structural evaluation of the bow that would determine its fitness for the use intended, safe function, or any other attribute except as mentioned.


Compound Bow Archery Locus in the Vertical Plane

In general, the path taken by the nocking point of an archery bow in the vertical plane is not a straight line perpendicular to the rest position of the string; it may vary significantly from that. Any deviation from a straight line at a draw length around the full-draw position will potentially lead to significant inaccuracy if the draw length varies by small amounts from arrow to arrow. This can occur for a compound bow if the cams do not come to their full-draw position simultaneously.