Yan Shaoning's waist had already been severely damaged, and Mo Lingwei's push made it worse. He only felt that his waist was about to fall apart.
In fact, he really wanted to say that he didn't come to save her intentionally, but the second half of Mo Lingwei's words made him shut up immediately and give up the idea of telling the truth.
"Oh! Oh! Oh! How are you, Xiao Ningzi? Are you okay? I...I didn't press your button on purpose!"
Mo Lingwei stood up in a hurry, straightened her clothes, and apologized.
"Ahem~!"
Yan Shaoning struggled to get up from the ground. He first looked back at Li Zexuan with a resentful look, then smiled forcefully at Mo Lingwei and said, "Uh, it's okay! Wei'er, what is this~?"
Only then did he notice the two-wheeled car that Li Zexuan stopped, and couldn't help but feel strange.
Mo Lingwei immediately became excited when Yan Shaoning mentioned the car she had just played with. She said, "Xiao Ningzi, this is the two-wheeled car that Uncle Fu just made. He said that this thing can be pedaled. I said before I have been practicing this, but I didn’t expect that the two-wheeled vehicle suddenly lost control and almost hit you! Fortunately, the mountain chief helped me stop it!"
After saying that, she patted her chest with a fearful look on her face. There was a turbulent wave, and Yan Shaoning blushed and quickly turned his head away.
"Haha~! This is called a bicycle~!"
Li Zexuan laughed out loud at this time.
Yes, the second picture he gave to Forbes was a bicycle.
After reading the drawings, Uncle Fu felt that the structure of this thing was quite simple, so he thought that he would be able to deliver it to Li Zexuan in about ten days. However, when it was actually built, he discovered that the bicycle was not as simple as he thought.
A bicycle can be simplified into several parts: body, handlebars, pedals, chain, seat, wheels and brakes.
These basic parts first appeared in 1885, and the inventor was British Staley.
Under his improvements, the bicycle took on the basic form of a modern bicycle: a triangular frame, a pedal in the middle, a chain drive, and a brake.
But 1885, according to the classification of middle school textbooks, was already modern times.
At that time, Britain had established a relatively complete industrial system, and its steel smelting technology had also matured. It was not difficult to make a bicycle.
But now is the Tang Dynasty! The Tang Dynasty, when the industrial system was underdeveloped! It is still quite difficult to build one or two bicycles.
The first is the frame. Modern bicycle frames are generally made of steel or aluminum alloy, carbon fiber... Ahem, if you ask the ancients for this, it would be a bit bullying. However, if you don’t have too many requirements for the strength of the frame, you can use bamboo or wood. Just pay attention to fire prevention and insect infestation. The front fork has a relatively large force, so cast iron or harder wood can be used.
The bicycle in Li Zexuan's hand is made of iron.
Next is the wheel. By the way, if Li Zexuan had not traveled through time, there would be no hope of making rubber tires in the Tang Dynasty, because the history of planting rubber trees in China was only more than a hundred years ago. Before the reform and opening up, there were not enough condoms to make, and rich people had to wash and use them. (dirty), so the wheels can only be made of wood.
But things are different now. Under Li Zexuan's promotion, rubber was introduced to China more than a thousand years ahead of schedule. At this time, workshops could still make a few rubber tires without any problem.
Fu Bo not only made rubber tires, but also made a pump based on Li Zexuan's drawings. The supporting tools are not lacking.
The first two things are not difficult, but the next component 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 a modern perspective, it is not difficult at all, and it is also very simple to make. From stainless steel or carbon steel, the machine punches out a pile of steel sheets. , just snap them together.
But in the Tang Dynasty, steel could only be forged and processed. Hundreds of identical small steel pieces had to be hammered out with one hammer, which could force the blacksmith's family to hang themselves. It's okay to use cast iron, because the molten iron is poured into the mold, which can ensure that the shape and size are similar, but the strength of cast iron... Let's put it this way, if your iron pot falls into eight pieces on the ground, it is cast iron.
As the transmission mechanism of a bicycle, the chain has to bear a considerable amount of tension, and the strength of cast iron is obviously not sufficient. And another disadvantage of cast iron chains is that once they are exposed to water, they will rust to death in minutes.
So Uncle Fu was worried about this thing for a long time.
Later, he couldn't think of a good alternative, so he went to Li Zexuan and explained the situation. Only then did Li Zexuan realize 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 stamping machine tool.
However, hydraulic stamping machine tools require strong hydraulic power. The flow rate of the river on the Bahe River is relatively gentle. To obtain strong hydraulic power, a large water level difference is required, and then a dam needs to be built to store water. The amount of work is really too large. He can do it in the future, but now, it's already winter, and the rivers may freeze in winter, so even if he does it, it will be in vain.
In early October, he planned to build a generator. However, after the cholera epidemic and the delay caused by 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 away. It's in the cupboard.
Let's talk about the chain. Since the conditions are not yet mature, Li Zexuan finally decided to give up using chain transmission. He chose to directly install the pedals on the front wheels and switch to front-wheel drive. This form was already created by the Scots in 1839. Although it is more laborious and easy to fall into pits, at least you can get on the road.
As for chain-driven bicycles, since they require hydraulic stamping machines, let’s wait until next year! It just so happened that he planned to update the workshop with a batch of professional equipment!
After Fubo got this plan, he came back and led the craftsmen to modify the bicycle without stopping.
After more than half a month, this front-wheel drive bicycle was finally built.
"bike?"
After hearing Li Zexuan's words, Mo Lingwei's eyes lit up and she said: "This name is very appropriate. Bicycle, bicycle, a vehicle that can walk on its own! Hee hee! It's just that, Chief Shan, your bicycle only has two wheels, but it doesn't work at all. It’s not easy to ride! It’s so hard to stand still! I fell down several times!”
Yan Shaoning helped: "Yes, Xiaoxuan, don't you think you can't get three wheels? It's too easy to fall over with two wheels!"
Li Zexuan smiled and said: "Who said it's not easy to stand firmly on two wheels? That's because you haven't mastered the balancing skills of this kind of car. I'll demonstrate it to you two later!"
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