Several carpenters chopped and chiseled the yard under the guidance of Xu Chen every day.

A group of children watched all day long and couldn't bear to leave.

Even adult men and women who are busy working, as long as they have a little free time, they will come to watch and watch and discuss this strange thing.

Too complicated, I don't know how to be harsh.

In fact, Xu Chen himself had no experience or confidence in making the wheel.

He played with car wheels, but that was made in large quantities from steel in the industrial era.

Although he saw his father disassembling the wheels and replacing the marbles inside the bearings when he was a child, the structure did not seem complicated, but neither the wheel hub wire spokes nor the bearing structure could be solved by wood.

Therefore, to make wheels in this era, it requires completely innovative designs from scratch.

And he didn't know the ancient method of making wheels.

But if you don’t know, he still knows the basic structure of the wheels.

In addition, he also knew that the wheels and axles of the carriages in the Spring and Autumn Period and the Warring States Period were fixed together. When rotating, the wheels and axles rotated together. The reason for this design is that there is no concept of bearings.

But if he did it now, he would definitely abandon this most primitive wheel structure and switch it to a fixed axle.

But in this way, not only should we solve the problem of how to make the wheels, but we should also solve the problem of bearing connection between the wheels and the axles.

Of course, it is not impossible to separate without bearings, that is, two metal rings similar to bearings need to be made between the wheel and the axle.

However, this structure has great disadvantages, that is, long-term drying will cause large amounts of heat and wear of the living ring, and it will probably not take long to replace it.

But changing bearings is always easier and faster than changing wheels. Although copper is expensive, there is not much demand for carriages at present. They basically run within a range of more than ten miles of back and forth near each tribe, and there are few opportunities for long-distance travel.

He can even clearly list the application scenarios.

The Ba people from the foot of the mountain to the river estuary pier.

The Wu people from the copper mine valley to the Wu people's gathering place, and then to the river beach and dock outside the valley. The actual amount of Wu water is still good and will not stop flowing all year round. As long as some ditches and construction are carried out, small rafts and boats can run back and forth, which can solve the transportation of copper mines and goods.

The most widely used one is probably the area of ​​the arch fire brazier.

The Gonghuo Clan, the Thunder Clan, the Five Ghost Clan, and there are two small tribes. A total of five tribes gathered within a range of only four miles up and down. In addition, the distance from the mouth of the Dahekou to the Gonghuo Clan is more than 30 miles. The rafts are very fast and the upwards are very slow. If a carriage road from the Gonghuo Clan to the Dahe River can be built and commuted with a carriage, it may be faster and safer than a raft.

There are not many situations between the Yu Gong tribe and the Wu tribe, and the carriages are only four or five miles from the valley to the mouth of the river, and the waterways can actually run.

As for other tribes, they are basically still in ancient ways of traveling, relying entirely on foot and rafts.

Besides, having a carriage requires a horse.

At present, except for the Ba tribe and Wu tribe, there are very few horses in other tribes, and it is absolutely impossible to popularize horse carriages.

Therefore, for a long time, carriages were still extremely scarce luxury goods and could not be promoted in all tribes.

In order to solve the problem of wheel production, Xu Chen thought hard for several days, wiped and painted the ceramic board, and made his hands and face full of carbon ash all day long, but in the end he still asked him to slowly design a more reasonable structural plan.

The Tao Te Ching says: Thirty spokes together have a hub, and when there is nothing, there is a car. The trunk is used as a utensil, and when there is nothing, there is a utensil. The utensil is used as a utensil. The utensil is used as a utensil. The utensil is used as a room, and when there is nothing, there is a room. Therefore, it is used as a benefit, and when there is nothing, it is used as a use.

When Xu Chen followed the old professor to read the Tao Te Ching, most of them were confused.

Putting aside this sentence, the philosophy of whether there is or not, makes him remember the structure of the ancient wheel hub.

In the pre-Qin period, there were thirty spokes on each wheel.

These spokes are riveted together with wood and tenons, eventually forming a round wheel.

When ancient people made wheels, they looked dark, but with this prompt, he found a way to make wheels.

That is, find some wood with suitable arc thickness, first cut into short materials with the same length, and then place them in a circle according to the designed wheel size, and then use an axe to slowly cut the joint parts into a rough circle.

However, when he saw this round shape pieced together and arranged it again, Xu Chen covered his cheeks and had a toothache for a long time.

He knew that under the current simple conditions and a group of primitive carpenters and his poor design, this circle would definitely not be very round, but the unexpected ending was far beyond his imagination. It was like being stepped on by an elephant, unsightly.

Finally, he had to correct it himself for most of the day. The outline of the wheel finally looked much better. He barely looked like a dog-chewed pot-kick, with the inner and outer edges stuttering, but finally there was a trace of roundness.

At this point, it is relatively simple. Find the center point, then use a hemp rope to radiate the holes around to draw the holes, and start digging holes and making spokes.

However, after the spokes were nailed, Xu Chen found that the trouble came again, that is, the wheel hub with the spokes fixed in the middle was also a reduced version of the rim, which also needed to be made into a circle and made a circle of holes to fix the spokes, which was more troublesome than making the rim outside.

When he arrived here, not only was he helpless, but a group of carpenters also looked at the stars, feeling that they had no idea what to do.

The current situation is that a bad master and a group of confused apprentices are preparing to do a shocking cause, but unfortunately he is unable to do it.

It can be seen that no matter how good your ideas are, your hands-on ability is the most important. According to the current level of civilization, it seems that the reserve of skill points for car manufacturing is not enough.

The advancement of Cheshi from Pickled Manufacturing is not a skill tree in the same system, and this time the points are declared a failure.

After several days of burning, the fourth furnace of bronze in the smelting workshop has melted.

So Xu Chen had to stop the project of building a carriage for the time being, and after he finished pouring these batches of sword weapons, he slowly thought of a solution.

Although I have had the experience of casting bronzes in the first three times, this casting was not very smooth. Only five of the ten swords were successful, with a success rate of only 50%.

The reason is that these instruments are too flat and slender, and the copper juice is not filled enough in the mold. Two of them directly collapsed during the pouring process, and the copper juice overflowed. There are three other handfuls because the copper juice is not filled, or bubbles and hollows appear, resulting in waste products.

However, the five successful hands made Xu Chen very satisfied. Although the sword was slightly deformed and bent because the mold was not straight and smooth enough, the blade nearly 50 cm long and the sword body looked very visually impactful. Even if the knife handle was not polished and installed, it could make people feel a strong and dangerous atmosphere.

It’s fine if ordinary knives, axes and daggers are all very short. Although they are sharp, they do not give people a great lethal feeling. At most, they are very pleasant to use.

But when these complete swords were dug out of the sand and cooled down, Xu Chen raised them one by one in his hand to observe, the onlookers and the men and women who heard the news came to see the fun all exclaimed and commotion, and many people couldn't help but change their faces and retreated.

Almost everyone felt a kind of fear from these slender knives.

Two swords are ordinary sword styles, one is about fifty centimeters long and the other is about forty centimeters long and the other is about forty centimeters long. The long sword is a heavy sword, weighing about eight kilograms and a long handle, and it is a two-handed sword.

Another shorter one is the one-handed sword, weighing about five kilograms and having a short handle.

There are three knives, a Pu knife with long hands, a Tang knife, and a waist knife.

For men of any era, their love for swords, guns, carriages and horses is deposited in their souls and bloodlines. When they are ignorant, they like to hold swords and other toys. When they grow up slowly, few boys don’t like to dance swords and guns. If a child doesn’t have a few plastic and wood swords and a few car toys at home, his childhood is simply incomplete.

Although Xu Chen lived in an era of banning swords and guns before traveling through time and did not have much contact, he still knew a lot about ancient swords and was very clear about the styles of these swords. Not to mention these common swords, Xu Chen could get them all together even if they were eighteen weapons.

Therefore, the shape of these cast weapons is not much different from that of ancient swords and swords. They are also made of the oldest bronze, which has an ancient holy light. The swaying gold makes him feel excited and he will inevitably develop a heroic heart.

Three thousand guests are drunk in the hall, and one sword is frost and the fourteen states are shrouded.

What a heroic poetic and painting environment, if you carry an AK or a small pistol, it will be really awesome.

The lonely shadow of the cold river is an old friend in the rivers and lakes. Why do you have to know each other when you meet?

If you are a man, you should go out to roam with your sword on your back.

Xu Chen temporarily made himself forget the carriage and the world, and began to calm down to assemble and polish these five swords.

After five days of busyness, five swords with different standards but equally sharp and strong swords finally came out of the oven. When they picked up these swords that opened their swords, all the hunters were ecstatic, excited and trembling with fear.

This thing is not a toy, nor a spear, bow, because it is very likely to hurt yourself when you kill people.

Xu Chen also made it clear that this sword is not used to cut trees and chop firewood, nor can it be used to cut trees and chop firewood, but it is mainly used for close combat self-defense.

In order to prevent a group of primitive savages from accidentally committing suicide while playing swords, Xu Chen had to take time to guide them in some simple usage actions, so that chopping and chopping are more organized, and don't dance like a cloak stick, and then accidentally wipe your neck.

A group of savages also knew that this thing was powerful. Cutting trees and cutting grass was like drinking water. Even leather and vine armor was useless in front of such sharp golden swords. Therefore, they were very careful when using it. Follow the instructions of Xu Chen, they gradually became familiar with the use of swords.
Chapter completed!