Even if you really want to use a gun, you can't go to the police station to find it. It's best to find an automatic rifle. Hong Tao knows where to find that thing, but it's a bit far away and he can't go there by himself for the time being.

Since bows and arrows and guns are not available for the time being, is it possible to use a slingshot? Hong Tao tried this weapon for three consecutive days and concluded that it worked sometimes and sometimes not. The destructive ability of the steel ball to the skull is definitely good, but it is not easy to hit.

The degree of transparency, especially the front.

Supposedly, this kind of power is enough to deal with living people, and it will definitely make the opponent fall down. But it doesn't seem to be very effective when used on zombies. It can just crack or even smash the bones. As long as the brain inside is not obviously damaged, they will be fine.

Just like a kid, do whatever you have to do, it’s annoying!

If we increase the number of leather straps, Hong Tao boasts that his arms have no magical power. Reluctantly pulling them apart several times is not only too laborious but also affects his aim. His hands are trembling. He cannot shoot accurately from more than ten meters away, and there is basically no chance of a second shot.

Already.

"It's better to rely on one's own efforts..." He kept thinking that he couldn't come up with a good source of weapons for dinner, so Hong Tao had no choice but to choose the most time-consuming and labor-intensive method, which was not necessarily easy to use, and made it himself!

What to build? Bows and arrows and guns are definitely not good. Although the former has technology and materials, no one can use it except yourself, so there is no point in building it. The latter really has no equipment, no materials, and no blueprints.

Even if you manage to make it, it's still useless without bullets.

"I've been around for several lifetimes, but it's still easy for you to use!" However, there is one thing that Hong Tao can both make and use that is easy to use and is easy to popularize, and that is the crossbow!

Not to mention Hong Tao, as long as you practice a little and shoot a few times, Chu Qiu and Zhang Ke can use it. And this thing has another advantage. Its power will not be reduced in anyone's hands, and it will not be affected by technology, strength or anything else.

combat effectiveness.

Compared with previous generations, Hong Tao's method of making crossbows can be said to have changed from a shotgun to a cannon. He started with a steel plate crossbow without a makeshift one. In fact, there is no condition for making a makeshift crossbow. Currently, there is only one material for the crossbow arm, leaf spring.

!

Leaf spring, the full name is leaf spring, commonly known as bow plate. It roughly means that several long spring steel plates are stacked together and fixed on the axle to support the carriage.

In the past, car suspension systems used leaf springs, which were called hard axles. Later, independent suspensions, cross arms, multi-links, etc. were developed, which increased comfort and reduced load capacity. However, trucks and some vehicles that require load capacity

, the rear load wheels still use hard axles and leaf springs.

Since ordinary passenger cars no longer use leaf springs, and Hong Tao's home is within the Second Ring Road, and most trucks cannot get in, then where can he find leaf springs? The answer is very easy, tricycles, disabled vehicles, and more and more

Electric Laotou Le, the suspension system still uses leaf springs. There is no other reason. This thing has a simple structure, is cheap, and has a low failure rate.

"I dismantle, I dismantle, I dismantle and dismantle!" When it comes to building cars, Hong Tao can only be a trafficker, but when it comes to dismantling cars, then he is the commander-in-chief, chief engineer, and small worker. No one needs to do it, just one person.

I went out with the tools and dismantled a tricycle in two hours. Two old cars came back fully loaded with a lot of spring steel plates.

"Grandpa Hong, are you making a bow and arrow?" Zhang Ke saw a long steel piece with a natural curvature. Although he didn't know what it was, the first thought in his mind was a weapon!

"Hey, hey, you're half right! Today I'm going to stay up all night to get the wire spool!" Everyone likes smart children, and Hong Tao is willing to teach anyone he knows what he knows, even if he doesn't want to learn.

So Zhang Ke became a temporary worker, responsible for serving tea, water and tools.

The leaf springs of the tricycle are not the same size as those of Laotou Le. The tricycle's leaf spring is thinner, 6 mm thick, 6 cm wide, more than 80 cm long, and the arc height is 11 cm. The Lao Toule's is slightly shorter, more than 70 cm long, but

It is relatively thick, 7 mm.

Which one is most suitable for making a crossbow arm? Hong Tao doesn't know, so he has to make one to try the effect. The specific method is very simple. First, tie the steel wire to the bow plate to test the tension. If it is too hard, find a way to make it soft.

If it's too soft, add a short bow plate to make it stiffer.

The actual result was that it was so hard that even Hong Tao was dissatisfied. At this time, the angle grinder came into play. With a burst of sparks and lightning, the two ends of the 6 cm wide tricycle bow plate became 4 cm wide.

Try again. If it doesn't fit, cut it into thin pieces. This work continued until about 8 o'clock in the evening, and the crossbow arm was finally finalized. One was made slightly longer using a tricycle bow plate, and the other was made slightly shorter using a Laotoule bow plate.

point.

Next is the crossbow body. This thing is simpler. Find a 5*10 wooden square and cut it into 80 cm long. With the narrow side facing upward, use an angle grinder to create a shallow groove for placing the crossbow arrows.

There is originally a hole for a fixing bolt in the middle of the bow plate. A hole is drilled below, and two 12 cm long bolts are used to fix it on the top of the wooden square, and it is properly formed.

The crossbow machine is made from the scraps of the bow plate that have been cut off. Use an angle grinder to grind it, and it will look different. Anyone who has made match guns, steel ball guns, and spray guns as a child will know how to make a crossbow machine. Wear it on the crossbow.

Two thin bolts are fixed on the side, which can hold the bowstring, and no spring is needed.

Let’s try the effect of the crossbow arm first and then talk about the details, lightweight and ergonomics. Otherwise, if you spend a long time trying to make it lightweight, beautiful, and practical, the crossbow arm will not work well, and all the previous efforts will be in vain.

"Bang...bang...buzz..." Crossbow arrows were the simplest. Hong Tao directly took a stainless steel chopstick and sharpened it, then stood five meters away and fired the crossbow at the courtyard door.

"...Let's go wash up and go to bed. We'll talk about it in the morning!" The chopsticks were accurately nailed on the courtyard door. As for aiming, that was a detail. What Hong Tao mainly wanted to see was whether the crossbow arm had enough tension.

When he grabbed the end of the chopsticks, pushed on the courtyard door, and changed from one hand to two hands without pulling an inch, the crossbow arm's tension test was basically passed. The chopsticks penetrated at least two inches, and the white-wrapped

The iron and pine boards were penetrated, and the force could penetrate the skull without any problem.

God seemed to know that Hong Tao had to work, so it started to rain lightly in the middle of the night, and it not only continued to rain until the early morning, but also got heavier. Since God didn't want him to go out, Hong Tao simply obeyed God's will and stayed under the ceiling.

Continue to improve the steel plate crossbow.

After last night's test firing, the pulling force of the crossbow arm was sufficient, but there was a small problem. This pulling force can only be pulled by stepping on the crossbow arm with both hands. How should Chu Qiu and Zhang Ke use it? They are definitely not strong enough.

At this time, there were two solutions, one was to use an eccentric wheel set, and the other was to use a pulley set. In the end, Hong Tao chose a pulley set. Although the eccentric wheel set was more effective, it was also more complicated and not as easy to find as a pulley.

A pulley is welded to each end of the crossbow arm, and a pulley is also installed on one side of the crossbow body in the front third of the crossbow body, forming a set of fixed pulleys and a movable pulley set on the left and right.

The junior high school physics teacher taught us that a fixed pulley is not labor-saving, but it can change the direction of the pulling force. The pulleys on both sides of the crossbow body are fixed pulleys, which change the direction of pulling the bowstring backward, turning it into a crossbow arm pulley facing the direction of the fixed pulley.

.

The pulleys at both ends of the crossbow arm are movable pulleys. The junior high school physics teacher also said that the movable pulley cannot change the direction of the force, but it can save effort. How much can be saved? A movable pulley can save half!

Knowledge is a wonderful thing, right? With four simple pulleys and a few dollars, a crossbow that can shoot through a two-inch wooden board can be turned into a toy that even a teenage child can pull apart!

Zhang Ke can indeed pull it apart and hold it up to fire. However, this thing is still too rough. It is not easy to control the shooting distance without Wangshan, which seriously affects the accuracy.

The next step is all fine work. The magnet strips from the door curtain are found and embedded in the grooves of the crossbow body to absorb the crossbow arrows to prevent them from falling due to movement. Slots are added to the crossbow body to add a return spring to further improve the crossbow mechanism.

Round and polish the wood of the crossbow body, make a few hollows without affecting the tension of the crossbow arm, try to reduce the overall weight, and adjust the center of gravity. After many test shots, I can roughly find the landing point for a walk, and make a simple mountain-viewing...

…

The rain had stopped and lunch had been finished, but Hong Tao was still busy working under the ceiling. A crossbow alone was not enough, he also had to have suitable crossbow arrows. There were only two pairs of stainless steel chopsticks, which could not be attracted by magnets, so they were of no use.

The ground pegs used to set up tents in the wild when fishing were pretty good, but the original ones certainly didn't work. Those pegs were just makeshift, short and soft, and couldn't hold the tent in place when they hit the gravel or dirt ground.

The ground nails used by Hong Tao are all custom-made by small processing factories. They are half a meter long structural steel and slightly thicker than chopsticks. They only need to be divided into two and the round head is ground into a triangular pyramid. The armor-piercing ability has to be doubled.
Chapter completed!