Parts of a Compound Bow: What You Must Know Before Buying One

If you’ve already decided to get into the sport of archery, bow hunting, or bow fishing, the most important thing you have to do is to choose the right kind of compound bow to use. The archery market is flooded with many good quality brand names to choose from, as well a variety of models specifically made in relation to the type of archery you are getting into. If you have no experience whatsoever in such things, you can always do some extensive research on related topics before deciding the brand and type you are going to purchase. A compound bow might be in principle a simple piece of archery equipment, but using one, and getting familiar with all the parts of a compound bow and their function is an entirely different story.

Parts of a Compound Bow

The first compound bow came into being in the year 1966 invented by a Missouri Bow hunter Holles Wilbur Allen; it was given a United States patent in the year 1969. A modern compound bow is a bow makes use of a leveling system to bend or pull the limbs with cables and pulleys. Compared to the recurve bow or longbow its limbs are made much stiffer than usual. It is this stiffness that makes it able to shoot arrows with more power and faster due to the greater power stored in the limbs. The strings are attached to a cam or pulley, with one or both has one or more cables attached to the opposite limb. This system enables virtually any archer to pull back the strings effortlessly and efficiently. The wheels turn every time the string is drawn back, which causes the pulleys to pull the cables, and causes the limbs to bend. Once the limbs are drawn back by the archer, energy is stored in the limbs, ready to shoot at arrow towards its intended target. A compound bow’s accuracy is further enhanced by the use of sight pins, anti-vibration systems, draw-stops, and many more elements not found in recurve and long bows. When combined, the many different compound bow parts and accessories make a superb piece of shooting equipment.

Let’s take a closer look at the most important parts of a compound bow: the central riser, the string and the cables.

The central riser
This is the central mount for other parts such as the sights, stabilizers, quivers and limbs. It is mostly made up of magnesium or aluminum. Risers are mainly made out of aircraft-grade aluminium alloy and designed to be as rigid as possible. The limbs are made of composite materials or composites – which are made from two or more constituent materials with different chemical or physical properties engineered to make a powerful and better part capable of taking high compressive and tensile forces.

The Strings and the cables
The compound bow strings and cables are mainly made of high-modulus polyethylene, a tough high impact strength very material highly resistant to corrosive abrasion and chemicals, is self-lubricating, extremely low moisture absorption and has significantly lower coefficient friction as compared to nylon. It is comparable to Teflon and is, tasteless, non-toxic and odorless. This highly modern material is meant to have superior tensile strength and minimal stretch ability. This is what makes the compound bow able to transfer all the stored energy of its limbs as durably and efficiently as possible to the arrow. Models of compound bows made earlier had plastic-coated steel cables.

Compound bows configurations

The mechanical parts making up these units create the main difference in style and functionality. There are cables used to connect cams that create draw strength; this compounding action can produce great amounts of thrust and apply it smoothly to the projectile. Some cams are round, and others are elliptical in shape some have single cams at each end, and some designs incorporate double cams.

A common configuration of the compound bow presents a wheel or cam at each end of the limb, which may vary from different bow types. There are different design concepts with different ways by which the cams store power in the limbs. Four different mechanical styles are available today: Single cam unit, Twin cam unit, Hybrid cam model (which has one cam on the top and two on the bottom) and a relatively new style called the Binary cam. This last unit has had very good reviews and already boasts a strong following. These design concepts fall under a category called bow eccentrics.

The Single Cam system is the best compound bow for beginners, as this type of bow is the most basic of its class having the advantage of not needing to be synchronized as that of a Twin Cam bow. The idler wheel at the top of the limb does not provide any mechanical advantage but serves only to unroll the string when the bow is drawn. The bottom cam controls the cable as the string is drawn, and at the same time letting out the other end of the string at a controlled rate to keep the nock move straight back and forward. The changes in power cable length do not affect this type of system; when the power cable is stretched, the bow stays in tune with a single cam.

The Twin Cam system bows are more difficult to use due to their high sensitivity to synchronization problems. The cams will not turn over properly if either one of its harnesses is not of equal length. Twin cam bows need daily checkups and timing-tuning in order to being kept in top performing condition.

The Binary cam overcomes the problems of the Twin cam by implementing a special rotation correction system that synchronizes the two cams with each shot cycle. This type of cam is also less time-consuming to maintain and requires little or no timing-tuning.

A big hunt needs the best equipment. Getting that compound bow should be job one. Go into it with an informed decision and focus. Make sure you are familiar with all the parts of a compound bow and their function so that you get the best features for the application. Overall, the Single Cam bow is a much better choice compared to the Twin Cam bow. One important thing to remember though is to ask the salesperson if the bow you’re about to purchase can be tuned or not.

When you have become a little bit more familiar with how a compound bow works, it is time to choose the right bow. Check out our compound bow reviews and discover the best compound bows for beginners and pro archers on the market.

Check Out The Best Compound Bows For Beginners and Pro Archers On Today’s Market Here

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