Abstract
A mathematical model of an archery twin-round-wheel compound bow is introduced. The force-draw curve of a compound bow is measured and compared to the prediction of the model. Also the path of the limb tip of the compound bow is checked. The model seems to be accurate enough for bow design or adjusting purposes.
Highlights
The compound bow is a bow in which a pulley system is used at the end of the limb tips in order to make the bow easier and more accurate to shoot
In this paper we shall restrict our considerations on one bow type only, the compound bow with similar round pulleys at the tip of the upper and the lower limb
Let us still assume that the path made by a compound bow limb tip is analogous with the Hickman model, but the radius of the circle and the distance of its centre from the tip of the undeflected limb with length L is AL, where the value of A may differ from 3/4
Summary
The compound bow is a bow in which a pulley system is used at the end of the limb tips in order to make the bow easier and more accurate to shoot. The earlier compound bow models had sometimes even 6 pulleys and levers [1], but nowadays the classification of compound bows is mostly based on the type of pulleys at the tips of the upper and lower limb. In this paper we shall restrict our considerations on one bow type only, the compound bow with similar round pulleys at the tip of the upper and the lower limb. A more advanced model for the twin-roundwheel compound bow is needed, which is the motivation of this paper
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