Before has been sorting out the United States hunting and archery related information, now intend to be issued in batches,first for everyone to discuss the supplement,the later collated, is expected to be a collection version.
Today's release is the arrow related knowledge, according to the use of the environment, use classification, classification by installation structure, as well as the main parameters of the arrow.
Arrows
Installed in the most front end of the arrow shaft,is the main part of the arrow to hit the target, according to different use of the environment,use and structure, the arrow can be generally divided into the following categories.
Ⅰ, according to the use of the environment and use of classification
1, target arrow
Mainly used for conventional target practice and various kinds of archery competitions, suitable for a variety of target materials (such as polymer materials, hay, rubber and plastic foam materials) on the arrow. The target arrow is generally simple conical or warhead shape,with small flight resistance and good crosswind resistance. Some target arrows will have the shape of increasing the resistance to penetrate the target, which can reduce the penetration depth of the target on the arrow branch, facilitate the drawing of the arrow, and reduce the possibility and risk of penetrating the target. On the arrow material, there are ordinary steel target arrows and stainless steel or alloy target arrows, generally stainless steel and alloy materials have higher hardness, the arrow is relatively not easy to blunt,but it is easier to cause damage to the arrow shaft after hitting hard objects.
The following figure is a variety of modeling of the target arrow
2 Hunt arrows
In foreign countries,arrow hunting is mainly used for all kinds of bow hunting activities (domestic hunting environment is strict,please strictly abide by relevant laws and regulations), and domestic bow enthusiasts are generally used for testing or collection. The hunting arrow is mainly composed of various shapes of sharp blades, which will cut and puncture the arrow area. When shooting into a target of the same material, the hunting arrow will usually have a greater penetration and damage to the target than the target arrow. Some hunting arrows also have barbs, so the use of hunting arrows is not recommended for ordinary target practice. Secondly, the piercing cut caused by the hunting arrow is more serious than the target arrow, and it is also not recommended to use the hunting arrow when experiencing outdoor archery, in case of accidental injury. In addition, the crosswind resistance of the hunting arrow is relatively poor, and the outdoor accuracy may be difficult to control. The naked pole without sticking feathers is also strictly prohibited to use the hunting arrow, because its flight is extremely unstable and prone to accidents. Of course, in addition to the thin blade type of hunting arrow, there are other special-shaped hunting arrow, shooting fish arrow,etc.,with their own different structural characteristics and functions, here will not expand the details.The following is a variety of modeling of the hunting arrow
3 Antique arrowheads
This kind of arrow uses a more retro shape, commonly seen in the arrows of the classical traditional bow, the cutting edge of the antique arrow is usually thicker than the thin blade of the hunting arrow, some of the antique arrow's wind deflection resistance is slightly better than the hunting arrow, and the piercing depth of the target is usually deeper than the target arrow. The following picture shows the antique arrowheads of various shapes
4. Soft arrows
Common in children's archery, recreational archery or adversarial archery activities,the arrow is often made of foam,sponge or soft rubber material, with a certain safety the arrow usually
does not penetrate the arrow area suitable for easy to be hit,knocked down the target,but the flight resistance is usually larger,especially the foam sponge of the big arrow.When using this type of arrow,the same attention should be paid to the safety of the use of arrows, and the adversarial archery should be correctly and comprehensively worn on the face and eyes
Protective gear for eyes and other areas.
The picture below shows all kinds of soft arrows
5. Sounding arrows
The arrows of this kind of arrows are also called ringing arrows, whistle arrows or signal arrows, ancient more used for signal transmission, modern more used for entertainment and retro experience, most of the ringing arrows are made of copper, the arrows are processed with air flow sound holes, emit whistles after shooting, can indicate the location of the arrow or send sound signals. This kind of copper arrow due to the hollow front end,relatively easy to dent damage. There is also a kind of steel sounding arrow,which has a sound hole at the back end of the arrow, and will also produce a whistling sound after launching, but the front end of the arrow is equipped with an arrow tip, which can be used to shoot the target, and the structure is relatively easy to damage.
The following picture shows all kinds of whistling arrows
Ⅱ. Sort by installation structure
1,interpolation arrow
Can be directly inserted into the hollow structure of the arrow shaft,the back end of the arrow cylindrical part of the arrow counterweight, the outer diameter of the counterweight column and the inner diameter of the arrow shaft match,some arrow counterweight column end with a number of deeper division slot, need to adjust the arrow counterweight,can cut off the partition slot,cut off part of the arrow counterweight can be. The interpolated arrow is generally reinforced with hot melt glue or resin glue and the arrow rod to prevent the arrow from loosening. The arrow with hot melt glue can be reheated to remove the arrow, and the resin glue can not be removed again.
The following picture shows the interpolated arrow
2. Adapter type arrow
The adapter type arrow is generally composed of an arrow and an arrow seat, the arrow seat is usually made of aluminum or copper, and the outer diameter of the rear part matches the inner diameter of the arrow shaft, which can be directly inserted into the hollow structure of the arrow shaft, and the arrow shaft is reinforced with hot melt glue or resin glue. The back end of the arrow is generally provided with a thread (thread specification is usually M4),which can be used with the arrow seat The connection is tight,and some arrows are also equipped with rubber ring slots,which can be set into a special type 0rubber ring, which is pressed in the place where the arrow and the end face of the arrow seat contact, and plays the role of thread prevention, preventing the arrow from loosening when it is hit the target or pulled out.
Arrow seat can be easily replaced with different weights, different types of arrows, convenient to adjust the dynamic deflection or use of arrows. The
converging arrow can also be transferred from the thick inside diameter shaft to the narrow inside diameter shaft by means of a specially designed arrow seat. The following picture shows the aluminum arrow seat and the copper arrow seat
Transfer arrow seat of thick arrow and thin arrow shaft
The mounting structure of the arrow and arrow seat
The arrow lock rubber ring
3 Coat style arrows
The back end of the jacket type arrow is hollow,which can be directly set on the arrow shaft. The inner diameter of the back end of the arrow is matched with the outer diameter of the arrow shaft. It is mostly used for wooden solid arrow shaft or cheaper glass fiber arrow and mixed carbon arrow. The picture below shows the jacket type arrow
Ⅲ, arrow main parameters and measurement The most important parameter Of the arrow is the weight of the arrow, that is the number of grys (1 grys (gr)=0.06479891 grams).The weight of the arrow will directly affect the dynamic deflection of the arrow and the position of the Center of gravity of the arrow shaft (FOC,Front Of Center, related concepts will be explained in the following chapters).,which in turn affects the arrow's deflection matching and flight attitude,and will change the high and low position of the aiming reference point.
The general interpolation or jacket type arrow directly measures the weight of the single arrow, and the transfer type arrow measures the total amount of the arrow and the arrow seat Weight,which counts as the weight of the overall arrow. Beauty hunting arrowheads generally weigh between 100and 150 grings (6.48 to 9.72 grams), and of course, In order to more accurately match the dynamic deflection of the arrow shaft, or adjust the aiming reference point, the weight of the arrow may also be less than 100 grings, or higher than 150 grings, but the too heavy arrow will make the center of gravity of the arrow move too far forward, which will affect the flight trajectory of the arrow, and the arrow's falling attitude at the end of the flight will be obvious. Since the arrow is generally only a few grams to ten grams of weight,the ordinary total arrow weight is usually within40 grams, so you can choose a certain precision jewelry scale to measure the arrow weight or the total arrow weight.
Below is a jewelry scale that can switch the weight unit
