From the point of use
What is the feeling of pulling is really a very bad description of the concept of creation, often used to flicker and confusion.
The same 70-pound bow, a good pull is a good pull, a good pull is not a good pull, you are in order to open the bow of the game, toss!
You are aiming for archery, you need a certain speed of the arrow, you can compare the bow with the same speed and the arrow is better!
The pull curve is smooth, this can be used on the archer pull tension curve, or the bow pounds can be lowered and slowly pulled to see if the bowing process is smooth. Continuously exerting a smooth bow, the force reduction process has no obvious setback or vibration, it is relatively smooth, smooth determines your physical exertion, this is very important fr paying games, but also for human muscles and joints. Impact.
Back wall We translate literally into the back wall. It is difficult to pull the bow after it reaches the stopping point. Whether the back wall is hard or not has a great influence on the accuracy of the archery. Some laying techniques must have a hard back wall to give an advantage. The soft back wall has a great impact on the accuracy of the archery.
Arrow speed
To some extent, it means that the arrow carries energy. What we often need is the energy carried by the arrow rather than the simple arrow speed indicator.
I actual use, we often need to choose the right arrow weight to balance the speed of the arrow and the weight of the arrow, such as hunting wild boar, sometimes need to use the fixed blade arrow, if the arrow speed is too high, it will enlarge the wind of the arrow, we choose the stem When the arrow reduces the speed of the arrow, the wind will have a significant improvement.
Arrow speed is a goal we pursue, but it is also a parameter we need to adjust according to the actual situation.
Vibration and noise
The actual evaluation of the noise of the new mass production bow is basically difficult to be lower than 80 decibels. This level of noise is already big enough for the prey of 30 meters. We feel that it is quiet enough to be quiet enough.
The vibration of the compound bow is measured by the acceleration sensor fixed on the fixed part of the bow. Although the two bow vibration indicators are very close, one is that the metal bow gives a plastic or wood bow to give people a great difference. Excessive front shock will affect the archer's wrist!
Flying quality of the shot arrow
We also shoot at the target or hunt outside a certain distance, 30 meters or more.
The arrow that the bow shoots out is of good quality. When the arrow reaches the target, there is enough arrow speed to still carry enough energy. The quality of the flight is not good. Everyone knows all kinds of violent tails, and the target on the arrow is not perpendicular to the target surface. The specific evaluation abroad is often the speed of the arrow in the tens of meters, compared with the close-range initial velocity, there is also the height of the flying parabola of the arrow directly in the fixed distance, so it is more direct. Easy to compare.
Easy adjustment of the bow
The adjustment mentioned here is to adjust the bow over the white paper and the bare rod. Some bows are better adjusted, or the factory state is already good. Only minor adjustments are needed. Some bows have no adjustment variables, and there is no way to pass the white paper or the bare rod is seriously skewed. Can not be adjusted. Similar to the inability to adjust is a very boring thing, your bow is basically crippled, whether it is uncomfortable, only you know.
In addition, it is suggested that the bowing of the white paper deliberately does not use the white paper to force the newbie.
Bow handling
Perhaps it will be understood as fault tolerance, in fact, it is considered to be more comprehensive in fault tolerance.
For example, some bows are very sensitive to the direction of pushing the bow and pushing the bow. Some bows are more tolerant, and some bows are more sensitive to the consistency of the back and forth. Although this sensitivity can be overcome and improved through later professional adjustments, there will be no ups and downs.
In addition, the center of gravity of the bow, the bow file (dynamic bow and static bow) and the angle of the bowstring also affect the handling.
Bow size
This problem does not seem to be a problem. In practice, we often hope that a bow can be used more. The size of the bow is also a problem we have entangled. In fact, this is really nothing to say. A multi-purpose bow is not very reliable. It’s also good to see your actual situation.
Bow weight
The weight of the bow has a great influence on the vibration of the bow. A bow with a weight difference of one pound evaluates the same vibration parameters, and the light one is much better.
The weight is discussed in the production angle.
The angle of manufacture of the bow.
Round Gro
Wheel set, bow piece Bow handle, bow string constitutes a bow, the wheel set is the core component to achieve energy conversion.
After decades of evolutionary development, the compound bow has basically exhausted various basic designs. It is not impossible to put the technology 20 years ago into today if it is hard to say that it is innovation.
The pulling force of the person pulls the outer bow string wheel through the bowstring, the outer wheel rotates to drive the cable string wheel to rotate, and the cable string wheel rotates and shrinks the cable string to compress the bow piece, and the energy of pulling the bow is stored in the bow piece.
Each time the bowstring is pulled by one inch, the cable tends to shrink only a few to a dozen millimeters. As the bowing process changes, the compression ratio changes. Before the stop point is reached, the bowstring is pulled, and the bow is hardly compressed. This is the labor-saving ratio we say.
A total of mature composite bows are designed to achieve the desired energy storage and work efficiency by smoothing the curve of the inner and outer wheels. The early compound bow has limited design capability. Generally, the outer wheel is round and the cable wheel makes a suitable curve. This makes the design easier and easier to process. It is difficult to maximize energy storage, that is, the arrow speed is not high, but the internal cable wheel pair The amount of compression of the bow determines the tension curve, and it can also make the wheel set that is difficult to pull, but the efficiency will be very low.
Each wheel set has its own advantages and disadvantages, and the user tries to choose as rationally as possible.
The design and manufacture of the wheel set is much more difficult than the bow. The curve wheel and the cable wheel curve match the perfect wheel set, which often reflects the design level of the compound bow.
The materials used in the wheel set are generally two types, one is die-casting, the other is forging material CNC. I identify the method. The forging material CNC is generally surface anodized, the anode layer is very thin, and the die-casting is anodized because of material limitation. The difficulty is very high. Generally, other types of surface coatings are used. The strength of the forged molding material CNC is slightly higher than that of the die-casting wheel set, and the production cost of the CNC wheel set is much higher. The degree of technological progress CNC is a relatively traditional processing method, and the pressing is quite advanced, and technological progress often reduces production costs.
The bearing of the wheel set is not much to say. Many people have practiced it. The service life difference between the plastic bushing and the high-quality rolling bearing is obvious, but several people can wear the plastic bushing and not change the bow! Don’t let the bow merchant make money? Low-cost manufacturing is another form of cottage.
Bow piece
The main fiber of the bow is glass fiber, and the glass fiber is also divided into three or six. Don't feel the low end when you listen to the glass fiber. The advancement of technology will have other more suitable fibers to replace the glass fiber. Some people will say that carbon fiber is better, carbon fiber is very good but not suitable for the main material of composite bow fiber.
The big bowed piece, pse 7 years ago, the large-scale use of the large bow, was a variety of smashing, and now everyone is using the big bow, the cross-section shape of the bow is very similar to the shape that pse7 years ago. The big bend may still be popular for a few years, and it will not be popular afterwards.
Processing of the bow piece With the advancement and development of technology, many manufacturers choose to purchase the bow piece profile and use the CNC to process the finished bow piece. The efficiency accuracy is greatly improved. But the issue of consistency still exists.
We choose a different brand of bow and bow pieces may be a product of a bow profile manufacturer.
Laminated bows are not used much now. Although the performance is good but the cost is high, the efficiency is low and more labor is required.
Bow
The bows have different shapes, materials and process costs.
The material of the bow determines the design and process and cost of the bow. The material of the bow is die-cast aluminum alloy, forged aluminum alloy, traditional carbon fiber and resin, and carbon fiber reinforced injection molding.
The die-casting aluminum alloy bow has a high cost, but the production efficiency and the production cost are very low, and the mold contracting after the batch is basically ignored.
The bows have different shapes, materials and process costs.
The material of the bow determines the design and process and cost of the bow. The material of the bow is die-cast aluminum alloy, forged aluminum alloy, traditional carbon fiber and resin, and carbon fiber reinforced injection molding.
The die-casting aluminum alloy bow has a high cost, but the production efficiency and the production cost are very low, and the mold contracting after the batch is basically ignored.
Forged aluminum alloy According to the calculation of 6061, the cost of a forged bow to cut through the CNC machining is still considerable. If a higher-grade aluminum material such as 7075 is used, the processing cost and material cost will rise significantly. The so-called high-end big names in China are generally not used, and cheap manufacturing is the favorite of the so-called big names.
There are still obvious gaps between carbon fiber and resin bows, basic new materials and new technologies, and design materials. Specifically, we must look at the real evaluation of the two customers this year. At present, production costs are high. There are obvious thresholds in technology. This technological advancement is not to reduce costs but to improve product quality. It is not a routine with a die-cast bow.
The fiber-reinforced injection bow has been around for two years, and it seems that security issues are not yet available. This is really a routine to reduce costs and improve efficiency. Perhaps with the advancement of technology, the injection molding bow will replace the die-cast aluminum bow.
Machining of the bow
Whether it is die-casting aluminum bow or forging material bow, it can improve the precision, reduce the weight and improve the product look and feel through the later CNC machining. Of course, the processing level is different. The low-end die-casting bow of pse is the finished product after several parts of CNC. Some brands basically process all the surfaces once, and people can't distinguish the materials and crafts of the bow. The introduction of the bow is not to mention the material of the bow, which makes it difficult to distinguish.
Bow stiffness
When all the bows are pulled open, the bow will be deformed by force. In order to reduce this deformation to a degree that does not significantly affect the use, the bow must have sufficient rigidity. After the mechanical design is exhausted, just use high-strength materials. And use more materials to go both ways.
Examples of using high-strength materials are 7075 bows and carbon fiber bows.
Using more examples of materials, some brands had a weight of 4 pounds for a 70-pound bow six years ago. After 7 years of development, the same-pound, similar-sized bow weighed 5 pounds.
Some materials, although they have sufficient strength, are not stiff enough. Technology advances again in a few years, this may not be the case.
Bowstring
Bowstring material and manufacturing process determine the quality of the bowstring. It is important that the bow is not twisted in your environment in two environments with a temperature difference of 20 degrees. The people who had hurt the egg had gone too much. They changed into a three-line plus rubber band. They just took an anesthetic. The disease is still there, but it is not so painful. Good bowstrings are expensive!
Choosing the bow, how to choose, the use determines the choice of the bow, all of which are secondary factors
