Yan Shaoning's old waist had already been greatly damaged, and being pressed by Mo Lingwei like this, it could be said that it was even worse, he only felt that his waist was about to fall apart.

In fact, he wanted to say that he didn't mean to come over to save her, but Mo Lingwei's second half of the sentence made him immediately shut up and dispelled his mind to tell the truth.

"Oh! Oh! Oh! Xiao Ningzi, how are you? You okay? I...... I didn't mean to press you there! ”

Mo Lingwei hurriedly stood up, straightened the clothes on her body, and said apologetically.

"Ahem~!"

Yan Shaoning struggled to get up from the ground, first glanced back at Li Zexuan with resentment, and then smiled at Mo Lingwei: "Uh, it's okay, it's okay!" Weier, what is this thing~? ”

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

Mo Lingwei heard Yan Shaoning mention the car she had just played, and immediately became excited, she said: "Xiao Ningzi, this is the two-wheeled bicycle that Fu Bo just made, he said that this thing can be pedaled with feet, I have been practicing this before, but I didn't expect this two-wheeled vehicle to suddenly lose control and almost hit you!" Luckily, the mountain chief helped me stop it! ”

After saying that, she patted her chest with a frightened face, and there was a wave of turbulence, Yan Shaoning's old face turned red, and she quickly turned her head.

"Hehe~! This is called a bicycle~! ”

Li Zexuan laughed out loud at this time.

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

At that time, after looking at the drawings, Fauber felt that the structure of this thing was quite simple, so he thought that he would be able to give Li Zexuan an errand after ten days, but who knew that when it was really built, he found that this bicycle was not as simple as he thought.

A bicycle can be reduced to a body, handlebars, pedals, chains, saddles, wheels, and brakes.

These basic parts first appeared in 1885 and were invented by the Englishman Stely.

Thanks to his improvements, the bicycle had the basic form of a modern bicycle: a triangular frame, pedals in the middle, a chain drive, and brakes.

But in 1885, according to the division of secondary school textbooks, it was already modern times.

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

But now it's the Tang Dynasty! The Tang Dynasty, where the industrial system was not developed! It's quite difficult to build a bike or two.

The first is the frame, modern bicycle frames are generally steel or aluminum alloy, carbon fiber...... Ahem, cough, if you ask the ancients for this, it will be a bit of a bully. However, if you don't have too many requirements for the strength of the frame, you can use bamboo and wood, which is nothing more than paying attention to fire and insect resistance. The fork is more stressed, and it can be made with cast iron or harder wood.

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

Next is the wheel. In other words, if Li Zexuan hadn't crossed over, there was no need to count on making rubber tires in the Tang Dynasty, because the history of planting rubber trees in China was only more than 100 years, and it was not enough to make condoms before the reform and opening up, and the rich had to wash and reuse (dirty), so the wheels could only be made of wood.

But now it's different, under the promotion of Li Zexuan, rubber was introduced to China more than a thousand years in advance, and there is no problem for the workshop at this time to make a few 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 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 do, stainless steel or carbon steel, and the machine stamps out a bunch of steel sheets and buckles them together.

But in the Tang Dynasty, steel could only be forged and processed, and hundreds of identical pieces of steel had to be hammered out with a hammer, which could force the blacksmith's family to hang themselves. It is okay to pour cast iron, because it is poured into the mold, which can ensure that the shape and size are about the same, but the strength of cast iron is ...... Let's put it this way, your iron pot is thrown on the ground and eight pieces are thrown, and that is cast iron.

As the transmission mechanism of the bicycle, the chain has to withstand a considerable tensile force, and the strength of cast iron is obviously not satisfied. And there is another disadvantage of the cast iron chain, that is, if it is wet, it will rust to death in minutes.

So Fauber was worried about this thing 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 make a hydraulic stamping machine tool.

But the hydraulic stamping machine tool needs strong hydraulic power, the river flow rate on this side of the Bahe River is relatively gentle, if you want to get a strong hydraulic power, you need a large water level difference, then you need to build a dam to store water, the amount of work is too large, you can do it in the future, but now, now it is winter, the river may freeze in winter, even if he does it, it is in vain.

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

Speaking of the chain, because the conditions are not yet mature, Li Zexuan finally decided to give up the use of chain drive, he chose to directly put the pedals on the front wheels and change the front-wheel drive. This form was already made by the Scots in 1839. Although it is more strenuous and easy to fall into the pit, it is good to be able to get on the road.

As for the chain drive bike, because it will use a hydraulic stamping machine, let's wait until next year! It just so happened that he was going to update the workshop with a batch of professional equipment!

Fauber got the idea and immediately returned to lead the craftsmen in rebuilding the bike.

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

"Bikes?"

After Mo Lingwei heard Li Zexuan's words, her eyes lit up, and she said: "This name is very apt, bicycle, bicycle, car that can walk by yourself!" Hee-hee! It's just that your bike only has two wheels, but it's not easy to ride at all! It's so hard to stand firm! I've fallen down several times! ”

Yan Shaoning said helpfully: "Yes, Xiao Xuan, did you say that you can't get three wheels?" Two wheels are too easy to fall! ”

Li Zexuan said with a smile: "Who said that it is not easy to stand firm on two wheels?" That's because you haven't mastered the balance skills of this car, so I'll show you two a demo later! ”

…………………………………

The second update!

(End of chapter)