Otaku Engineer in Great Tang Dynasty

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Yan Shaoning's old waist had already suffered a huge injury, and Mo Lingwei pressed it again, which made it worse. He just felt like his waist was about to fall apart.

In fact, he really wanted to say that he didn't mean to come to save her, but Mo Lingwei's second sentence made him immediately shut his mouth, dispelling the thought of telling the truth.

"Oh! Oh! Oh! How are you, Xiao Ningzi? Are you okay? I... I didn't mean to press you!"

Mo Lingwei hurriedly stood up, straightened her clothes, and apologized.

"Cough cough~!"

Yan Shaoning struggled to get up from the ground, first glanced back at Li Zexuan resentfully, and then smiled at Mo Lingwei: "Uh, it's alright! Wei'er, what is this thing~?"

At this time, he noticed the two-wheeled car stopped by Li Zexuan, and couldn't help but feel strange.

When Mo Lingwei heard Yan Shaoning mention the car she was playing with, she immediately became excited, and she said, "Xiao Ningzi, this is the two-wheeled bicycle that Fu Bo just made. He said that this thing can be pedaled. I've been practicing this, but I didn't expect that this two-wheeled vehicle suddenly lost control and almost hit you! Fortunately, the mountain leader helped me stop it!"

After saying that, she patted her chest with a look of fear on her face, and there was a turbulent wave, Yan Shaoning blushed, and turned her head quickly.

"Hehe~! This is called a bicycle~!"

Li Zexuan laughed out loud at this time.

That's right, the second picture he gave Forber before was a bicycle.

At that time, after looking at the drawings, Fu Bo felt that the structure of this thing was quite simple, and he thought that it would be delivered to Li Zexuan in ten days. Who knew that when it was actually built, he realized that the bicycle was not as simple as he thought.

A bicycle can be simplified into the body, handlebars, pedals, chains, saddles, wheels and brakes.

These basic parts first appeared in 1885, and the inventor was the British Steley.

Under his improvement, the bicycle has the basic shape of a modern bicycle: a triangular frame, the pedals in the middle, a chain drive, and a brake.

But in 1885, according to the classification method of middle school textbooks, it was already modern.

At that time, the United Kingdom had already established a relatively complete industrial system, and the smelting technology of steel was also becoming mature, so it was not difficult to make a bicycle.

But now is the Tang Dynasty! The Tang Dynasty when the industrial system was not developed! It is quite difficult to make a bicycle or two.

The first is the frame. Modern bicycle frames are generally steel or aluminum alloy, carbon fiber... ahem, if you ask the ancients for this, it will be a bit of a bully. However, if you don't have too many requirements on the strength of the frame, you can use bamboo or wood, but pay attention to fire and insects. The front fork is relatively stressed, and cast iron or harder wood can also make do.

The bicycle in Li Zexuan's hands is made of iron.

Next up are the wheels. It is said that if Li Zexuan hadn't crossed over, he would not have expected to make rubber tires in the Tang Dynasty, because the history of planting rubber trees in China is only a hundred years old. Before the reform and opening up, it was not enough to make condoms. Use (dirty dirty), so the wheels can only use wood.

But it is different now. Under the promotion of Li Zexuan, rubber was introduced to China more than a thousand years earlier. At this time, there is no problem in the workshop making several rubber tires.

Fubo not only made rubber tires, but also made a pump according to Li Zexuan's drawings, and the supporting tools are not complete.

The first two things are not difficult, but the next part, that is the transmission part of the bicycle - the chain. The chain is composed of an outer piece, an inner piece, a shaft and a roller. From the perspective of modern people, it is not difficult at all, and it is very simple to make. It is stainless steel or carbon steel, and the machine punches out a bunch of steel pieces. , just snap it together.

But in the Tang Dynasty, steel could only be forged and processed, and it took a hammer to knock out hundreds of identical small pieces of steel, which could force the whole family of blacksmiths to hang themselves. Cast iron can be used, because the molten iron is poured into the mold, and the shape and size can be guaranteed to be similar, but the strength of cast iron... Let's say, if your iron pot is thrown on the ground and eight pieces are thrown on the ground, that is cast iron.

As the transmission mechanism of the bicycle, the chain has to bear a considerable pulling force, and the strength of cast iron is obviously not enough. And the cast iron chain also has a disadvantage, that is, once it gets wet, it will rust to death in minutes.

So Fubo had been worrying about this for a long time.

Later, he really couldn't think of a good alternative, so he found Li Zexuan to explain the situation. Only then did Li Zexuan know that a simple chain in modern society would be so troublesome to produce in ancient times. In fact, this problem is not impossible to solve, just build a hydraulic punching machine.

However, the hydraulic punching machine needs strong hydraulic power. The flow rate of the river on the Bahe side is relatively gentle. To obtain strong hydraulic power, a large water level drop is required, and a dam needs to be built for water storage. The amount of engineering is too large. It can be done in the future, but now, it is already winter, and the river may freeze in winter. Even if he does it, it will be in vain.

At the beginning of October, he still planned to build a generator, but after the delay of cholera and the telescope, he felt that it was too late, because the river was about to freeze, so the generator drawings he had drawn could only be temporarily locked. in the closet.

As for the chain, Li Zexuan finally decided to give up the use of the chain drive because the conditions were still immature. He chose to directly install the pedals on the front wheel and change the front wheel drive. This form is already 1

In 839 the Scots made it look like. Although it is more laborious and easy to fall into the pit, it is still possible to hit the road.

As for chain-driven bicycles, because of the use of hydraulic punching machines, let's wait until next year! It just so happened that he planned to update the workshop with a batch of professional equipment!

Forber got the plan and came back non-stop to lead craftsmen to rebuild bikes.

After more than half a month, this front-wheel drive bicycle was finally built.

"bike?"

After Mo Lingwei heard Li Zexuan's words, her eyes lit up, and she said, "This name is quite appropriate, bicycle, bicycle, a car that can walk on its own! Hee hee! It's just that your bicycle only has two wheels, but you have nothing at all. It’s hard to ride! It’s hard to stand still! I’ve fallen down several times!”

Yan Shaoning helped: "Yeah, Xiaoxuan, don't you think you can't get three wheels? Two wheels are too easy to fall over!"

Li Zexuan said with a smile: "Who said that it's not easy to stand on two wheels? That's because you haven't mastered the balancing skills of this kind of car. I'll show you two later!"

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