![]() There isn’t much to know here, and I wouldn’t mention the axle pins except the measurement between the top pin and the bottom pin makes up the compound bow’s axle-to-axle measurement. Most states require a letoff rating that doesn’t exceed 80 percent, so keep this in mind. Letoff is the reduction in holding weight at full draw (so a with a 60-pound bow, and 80% let off, you’re holding 12 pounds at full draw). Modules also, on most bows, allow the shooter to change their letoff. However, others come with a set draw length and require a complete module change to alter draw length. Most modern-day bows are draw-length adjustable in ½-inch increments across a broad range. The bow’s modules allow the shooter to change draw length. Most bows have a draw stop on each cam, but some have a single peg on the bottom or top cam. Some draw stops contact the compound bow’s inner cable (a cable stop) while others touch the inside of the limbs (a limb stop). Parts of a Compound Bow: Cam & Module Jace BausermanĬams are also fitted with modules and draw stop pegs. This design allows each limb to pull in the opposite direction at the shot, which cuts down on noise and post-shot vibration. This means that the limbs run parallel to each other versus angling in toward the riser. Most modern-day hunting bows sport a parallel or beyond parallel limb design. While split-limb models are popular, several bow manufacturers offer single, solid limb designs. In recent years, manufacturers have beefed up limb designs, and most hunting bows sport limbs with broad split limbs fitted with a rubber dampener placed between them to soak up noise and vibration. The limbs take a good amount of energy at the shot and are under constant bend and flex. If a catastrophic failure occurs, it’s typically in the limbs. The limbs are among the most important parts of a compound bow. Made of aluminum or, in some cases, a high-grade plastic, the limb pockets also hold the bow’s limbs securely in place. A bow will perform its best when set at peak weight, which is with the limb bolts screwed in. Some bows offer more draw-weight adjustments than others, so be sure to read your owner’s manual. ![]() Limb screws that sit in the center of the pockets attach the riser, and the screw allows for draw-weight adjustments. The design of a compound bow’s limb pockets is crucial to its durability and its ability to dampen vibration.
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