Chapter 34 Compound Bow
Abel is going to use this time to strengthen his strength. First of all, in terms of weapons, in this battle, if he has a long-range weapon, he can attack the werewolf from a distance, and he can also block the werewolf from a distance. At least he can. Make the werewolf slow down.
Abel has thought a lot about long-range weapons, and Abel has also researched bows and arrows in this world, but he wants to make the 70-pound compound bow he used on Earth.
The advantage of this compound bow is that with an 80% effort ratio, you only need 14 pounds of pulling force to keep the bow in a full bow state (70×(1-80%) when the bow is fully drawn. )=14), the user can divert their energy from drawing the bow, and let their attention be used more on aiming and adjusting their posture.
In the case of 60% labor saving ratio, 28 pounds of tension is required to maintain the full bow state, the energy storage of the bow will be more, and the speed of the arrow will often be shot faster.
These two states can choose the labor-saving ratio on the bow body, and adjust the high or low labor-saving ratio of the compound bow according to the actual situation.
Because of his strong mental power, Abel now has a very deep memory of the past. Abel remembers the various components of the compound bow and the dimensions of the components very clearly.
The compound bow consists of falling wheel, power wheel, upper and lower bow arms, bow handle, bow arm seat, bow string sliding sleeve, bow string shock absorber, arrow rest, handle, main string, auxiliary string, bow shock absorber, string stop and other parts Composition, plus accessories arrow rests, arrow rests, sights, hair spreaders, shock rods, peepholes, wrist ropes, etc., form a complete modern compound bow.
Although the level of the current world is limited, the power that people in this world can exert is much stronger than that of humans on earth. At least Abel has never heard of anyone in the original world who can slash people and horses with one sword. In two halves, this is still under the circumstance that the Marshall Knight is only an intermediate knight. If it is a more advanced knight, it is even more difficult for Abel to imagine what kind of power it will have.
And now Abel's power is stronger than that of most people on earth, and he is only 13 years old. Abel now estimates that his strength is more than 400 pounds. As a fitness instructor, he can only draw a 70-pound compound bow when he is on Earth, and a stronger compound bow cannot be drawn.
Therefore, although the material of the compound bow cannot be found in this world, due to the stronger strength of the people in this world, especially from Abel himself, the compound bow is made by himself, and it can be replaced by a stronger material. Don't worry about weight.
Abel drew all the components identically, dimensioned them, and considered what materials to use.
With the wheel and the power wheel, Abel considers using bearings to support the rotation of the two wheels, reducing the friction coefficient during their movement and ensuring their rotation accuracy. The two wheels are made of Bailian rough blanks.
Abel does not plan to do the upper and lower bow arms himself, because it is too time-consuming. His idea is very simple. To dismantle two heavy bows, the production of heavy bows takes a long time, and the materials are the best. Abel knows the warehouse. There are several 200-pound heavy bows, which are the strongest bows in the castle, but those bows are rarely used, because there are not many people who can draw the bows, and only trainees above the fourth level can draw them. Open, but pulling and aiming are two different things. After pulling and aiming at the same force, the user's strength must reach more than 300 pounds, or even higher to ensure that the heavy bow has enough power.
So those heavy bows have been kept in the warehouse and few people use them. Only the weapon custodian in the warehouse performs some daily maintenance. Abel thought that if he took two heavy bows apart, there would be bow arms and two bowstring.
Both the upper arm and the lower arm use the arm part of the heavy bow, and the arms of the two heavy bows are glued together, resulting in a stronger arm than the heavy bow.
Such as shock absorbers, bow shock absorbers and string stops are made of wood,
Both the bow handle and the arrow rest are made from Bailian rough.
After Abel planned everything, he started the production of compound bows. Abel found two heavy bows from the warehouse, and hired a bowmaker. Abel did not have the confidence to make a qualified bow. Arm, because the bow arm is the main source of strength for the compound bow, and it is also the guarantee of the power that can be exerted after the bow is finally formed. Abel believes that it is better to find a professional person than to fail slowly and repeatedly.
The bow maker I found dismantled the two heavy bows with great heartache, then cut them into the size Abel requested according to the drawings provided by Abel, and then glued the two bow arms together with fish skin glue. The final product Make Abel very satisfied.
As for the shock absorber, bow shock absorber and string stop, Abel hired a carpenter, and under Abel's guidance, he also met Abel's requirements.
Gradually, the accessories were almost prepared, and the final bearings could only be made by Abel himself.
It can be said that the bearing is the most important part of the mechanical equipment on the earth. It is very difficult to make. The bearing consists of an inner ring, a ball and an outer ring. scroll between.
Abel first made balls. It is very difficult to make balls with the current technology, because there is no industrial machine tool, and all made by hand. As a master blacksmith, Abel is also very stressed.
He first made a vernier caliper, and then slowly forged small pieces of iron with an iron hammer. After hammering it into a circle, he continuously measured it with a caliper, and then forged it. Abel did not expect that a standard spherical ball would cost a lot of money. After so much time, it took half a day to make a small ball, which is completely spherical in the measurement of the vernier caliper.
After completing the making of the first ball, Abel used a clay wet sand mold method, using clay and an appropriate amount of water as the main binder of the molding sand, and made thirty balls with the first ball. sand mold.
There are only 12 balls per bearing, but Abel planned to make more spares. He originally thought that the most troublesome thing was to turn iron charcoal into molten iron. Only after asking Master Bentham did he know that there is a special natural fire additive in this world. If you want to turn iron into molten iron, you can easily turn iron into molten iron by adding these natural fire-boosting additives during the heating process.
Abel poured molten iron into 30 ball sand molds, waited for it to cool and took out, and after some grinding, he finally got perfect balls.
According to the size of the ball, Abel calculated the size of the inner and outer rings, as well as the depth of the raceway. These fine forgings were successfully completed with the help of Abel's mental power.
The next step is to combine the inner ring and the outer ring with the balls. This has been introduced in many physics lectures and documentaries. Abel took some ice from the ice cellar, put the inner ring in the ice, and put the outer ring in the ice. In the furnace, after a while, due to the principle of thermal expansion and contraction, the inner ring, ball and outer ring can be stuck together in sequence. After the temperature is normal, the bearing that Abel wants is made.
Press down to fix the bearing, the finished falling wheel, and the power wheel, and install it step by step. In the end, Abel made the world's first compound bow.
Since this compound bow could not be left empty, it was evening time, and Abel put the compound bow away.
Early the next morning, after playing with Heifeng for a while, Abel found fifty arrows from the warehouse and came to the archery range to test the new bow. Because this compound bow was too weird, Abel put the archery range Empty.
The first arrow was taken out, stuck on the arrow stand, and the hair spreader was pulled hard. Abel never imagined that the force required by this bow would be so great. The combined force of the two heavy bows definitely exceeded 400 pounds. Bo had almost exhausted all his strength to pull the bow away. After he had pulled it completely, he felt that he was suddenly relieved. As long as it took less than 100 pounds of strength, he could maintain the stretched position.
Abel pointed the sight of the sight at the 50-meter archery target, lightly pressed the trigger on the hair spreader, the bowstring squeaked lightly, and the arrow flew out, hitting a straight line at a distance of 50 meters in the air. The bull's-eye, and then after the bull's-eye hit a round hole, it continued to fly backward until it hit the 30-meter back wall before falling to the ground.
The 50-meter target was already the farthest target in the castle. Although Abel had tested the compound bow's firing and aiming, there was no problem, but the longest shooting distance had not been tested.
Abel was holding a compound bow and looked at the round hole in the center of the arrow target in front of him. Abel had never heard of a bow and arrow that flew in a straight line within 50 meters. This compound bow was already the most technologically advanced bow in the world.