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Bow hunters will find it interesting to learn about the advantages and disadvantages of using compound bows compared to the using other types of bows. The advantages to bow hunters of using compound bows are as follows. The function of the cam systems (known as the 'eccentrics') of compound bows is to maximize the energy storage throughout the draw cycle of the bow and to provide let-off at the end of the cycle or less holding weight at full draw. A traditional recurve bow has a very linear draw weight curve. This means that as the bow is drawn back, the draw force becomes increasingly heavier with each inch of draw (and obviously becomes extremely difficult the closer the archer gets to a full draw.
Subsequently, little energy is stored in the first half of the draw and a lot more energy is stored at the end where the draw weight is at its heaviest. Compound bows operate with a very different weight profile, reaching their peak weight within the first few inches of the draw and staying more flat and constant until the end of the cycle where the cams €let-off' and permit a reduced holding weight. This manipulation of the peak weight throughout the draw, which is technically and practically achieved by the elliptical shape of the cams that change leverage and mechanical advantage, is the reason why compound bows store more energy and shoot faster than an equivalent peak weight recurve bows or long bows. The design of the cams directly controls the acceleration of the arrow.
What is known and referred to and identified as a €soft cam' will accelerate the arrow more softly than a €harder' cam. Learner archers will naturally shoot a soft cam while a more advanced archer might choose to use a harder cam to get speed. Bows can be made or manufactured with a diversity of cams ranging from soft to hard. Some pulley systems use a single cam at the base of the bow and a balanced wheel at the top of the bow instead of two identical cams. This design removes the need for buss cables and in its place uses a single string that starts at the cam on the bottom of the bow, travels over the wheel on top, around the bottom cam again and ends attaching to the top limb. These are only a few of the physical characteristics that constitute the practical advantages of using compound bows.
Subsequently, little energy is stored in the first half of the draw and a lot more energy is stored at the end where the draw weight is at its heaviest. Compound bows operate with a very different weight profile, reaching their peak weight within the first few inches of the draw and staying more flat and constant until the end of the cycle where the cams €let-off' and permit a reduced holding weight. This manipulation of the peak weight throughout the draw, which is technically and practically achieved by the elliptical shape of the cams that change leverage and mechanical advantage, is the reason why compound bows store more energy and shoot faster than an equivalent peak weight recurve bows or long bows. The design of the cams directly controls the acceleration of the arrow.
What is known and referred to and identified as a €soft cam' will accelerate the arrow more softly than a €harder' cam. Learner archers will naturally shoot a soft cam while a more advanced archer might choose to use a harder cam to get speed. Bows can be made or manufactured with a diversity of cams ranging from soft to hard. Some pulley systems use a single cam at the base of the bow and a balanced wheel at the top of the bow instead of two identical cams. This design removes the need for buss cables and in its place uses a single string that starts at the cam on the bottom of the bow, travels over the wheel on top, around the bottom cam again and ends attaching to the top limb. These are only a few of the physical characteristics that constitute the practical advantages of using compound bows.
