Marquis, how can these two wheeled cars not fall down when they are on?"

Lin Dong and others gathered together to ask questions.

Now, it has been seven years since Chen Xu launched the project to develop bicycles.

In the past seven years, Daqin's industry and economy have undergone earth-shaking changes, and even Chen Xu has almost completely forgotten about this matter.

But with the encouragement and stimulation of Chen Xu at that time, Lin Dong and other craftsmen continued to study and failed repeatedly, and now they finally presented this century-old industrial product in human history to the Hou Qinghe, who is known as the father of science, the father of industry, and the father of machinery of the Qin Dynasty.

This is an unspeakable excitement and honor, but for seven years, there has always been an unsolved mystery that has made everyone in the scientific research team feel like they are stuck in their throats.

How can a car with two wheels arranged in a straight line?

Even though the bicycle has been successfully developed for a long time and has gradually improved to almost exactly the same as the one drawn by Marquis in the first drawings, and the bicycle was secretly pushed and tested repeatedly during the development process, no one can explain or solve this puzzling problem.

"Hahahahahahahaha, it's not bad, it depends on technology. By the way, I remembered that I had made bets with many of you because of this, right?" Chen Xu seemed to remember what happened at that time.

"That was when my subordinates were listening to the Marquis' class at the Academy of Sciences. Because they like to study institutional skills, they have been studying mechanical transmission issues such as gear bearing chains over the years. Because the bicycle structure is too delicate and complex, it has been researching intermittently for many years before they succeeded. The Marquis did make a bet at the beginning... but I don't know... I wonder if the Marquis' bet is still effective?" Lin Dong stuttered at the end.

"It takes effect, it takes effect naturally..." Chen Xu nodded repeatedly, touched the back of his head and thought for a long time and said, "What did I bet on at the beginning?"

"The Marquis set up a bonus of 10,000 yuan at that time, and said that if he could ride successfully, President Zhang would run naked from the Academy of Sciences to the East Gate Bridge. If you ride down, that... that..."

"I will run naked to the East Gate Bridge, right?" Chen Xu said with a smile.

"Yes, the Marquis did say that back then!" Lin Dong nodded with his neck shrank.

"Hehe!" A group of supervisors and craftsmen all laughed dryly.

"By the way, when you say that, I really remembered it. You asked me several times in a row and made a bet on eating a stone mill, right?" Chen Xu looked at Lin Dong.

"I did say that... I said it, but the Marquis later changed it to run naked!" Lin Dong's face turned red.

"Haha, okay, wait for me to try whether you can ride this bicycle. If you can ride it, I will find Vice President Zhang and the others. I want to see you running naked..."

Chen Xu laughed loudly and held the handle of the faucet in one hand and the seat cushion in the other. He was very familiar with the spring gear of the tripod with one foot. A crisp spring sound was heard, and the tripod bounced up with a whirlpool. It was flexible and completely no different from the bicycle tripods in later generations.

The bicycle was very heavy because almost all of its body was made of steel. When Chen Xu pushed it to the ground, he weighed it with his hand and felt it was at least thirty kilograms. This weight felt much heavier than the 28-bar when he was a child.

"Go ahead, let the marquis test drive~~"

Seeing Chen Xu pushing out a strange car, a large group of craftsmen and apprentice helpers quickly surrounded outside the laboratory. A group of managers had to scold him loudly, and soon the crowd dispersed and revealed a large open space.

Chen Xu took a deep breath, tried the handbrake first, then stepped on the pedal, pushed the bicycle forward for a few meters, and then took a beautiful back and slid easily on the bicycle. Then, in full view, the bicycle with only two wheels actually rushed forward several feet under Chen Xu's control and turned smoothly.

"Wow~~"

There was a burst of exclamation and excitement at the scene, and then there was excitement and joy. Even Lin Dong and many craftsmen hugged each other and cheered and cried.

"Hahahahahahahahahaha, it's successful, we succeed, we will definitely not fall!"

"Dingding~~"

With the cheers of hundreds of people watching, Chen Xu rode his feet comfortably and pressed the bell to ride back and forth in the small courtyard outside the laboratory of the Fifth Institute, passing through the onlookers or the center, as elegant and flexible as a fish. Everyone's surprise and excitement gradually became excited from the beginning, aroused a strong curiosity, and even a little eager to try.

After riding for five or six minutes, Chen Xu slowly stopped. This test ride also made him feel the overall condition of the bicycle.

Too heavy, this is the first disadvantage.

The faucet is not very flexible to rotate, but it is still acceptable. The main reason is that the car is too heavy.

If the brakes are not sensitive enough, they will either not easily be able to brake or they will suddenly get stuck.

The shock absorption is too poor. Although there is a thick layer of cowhide on the cushion and it is filled with trowel. However, because the wheels do not have rubber tires except for the steel wheel hubs, they only rivets and rivets to rivet a circle of cork. When the yard is not flat, it feels a bit painful to sit on it.

As for the rest, there wasn't much feeling in such a short time. Overall, this is a perfect bike and has fully reached the standard of riding on the road.

After stopping, a group of people were excited and excited to discuss. Chen Xu also carefully asked about some structures on the car and pointed out the advantages and disadvantages.

"The brake pad made of beef tendon is fine, but the brake lines still need to be improved, so that the steel plant can use the best tough steel wire twisted. At the same time, this brake mount is not flexible enough and sometimes it cannot be bounced..."

"It is best to add a thick spring under the seat cushion, otherwise you will not be able to stand the crotch when riding for a long time..."

"You can put a slightly thicker wooden handle on the handle and wrap it with cowhide on the outside..."

"By the way, the wheel hub and body can be made more slender and delicate. This is a bicycle, not a ox carriage. If you ride a person with a hundred or ten kilograms of goods, you don't need to be so thick and heavy. The total weight of this car must be controlled at about seventy kilograms. If a smaller model is developed for women to ride, the weight will still be reduced to fifty kilograms. The radius of the wheel is two feet, and this size can be reduced to make a light bicycle of one foot, five inches or one foot..."

"The triangular beam can also be improved. Lightweight bicycles do not need large beams, but are directly made into integrated curved beams. This is the shape, which makes it easier for women and children to ride..."

Regarding the various structures of the car in front of me and the feelings I felt during the test drive just now, Chen Xu compared the bicycle and gave an on-site explanation. Lin Dong and other groups of craftsmen nodded repeatedly when they heard it, and their eyes were lit up and felt greatly inspired.

While Chen Xu was explaining, the news that the bicycle was developed successfully and the Marquis had personally tested the bike had been spread by the rush-mouthed gangsters of the Fifth Institute. In less than twenty minutes, the entire experimental factory was known. Thousands of people rushed from various factory workshops and warehouses, all of them squeezed into the small yard of the Fifth Institute. After Chen Xu finished the explanation, he stood up and found that the entire yard was already densely surrounded by three layers inside and three layers.

"Mr. Marquis, this bicycle really won't fall down when riding?" Zhang Cangma Gan Gongshusheng and other hard-core direct descendants all squeezed up, their cheeks flushed with excitement.

"Haha, of course I won't fall. Manager Lin and hundreds of people just saw it. How could it be wrong? President Zhang made a bet with me that he would run naked to the Dongmen Bridge. President Zhang quickly took off his clothes..." Chen Xu was so happy that he couldn't stop catching Zhang Cang.

"Uh!" Zhang Cang's old face turned red in an instant, and he shouted: "Mr. Marquis, don't be anxious, I'm willing to accept the loss of the bet. Cang will naturally keep his word. However, I haven't seen Marquis ride a bicycle with my own eyes. Why don't you wait for a demonstration for me? Cang was not the only one who bet with Marquis, but also..."

Zhang Cang glanced at Ma Gan and Gongshu Sheng next to him, "Hehe, Marquis, the bet with you, Director Ma and Gongshu Master are also here!"

"Then let's go together. Those who bet with me that the bicycle would fall out when they bet with me. I will make promises with you today!" Chen Xu said loudly to the surroundings.

The crowd suddenly became a little turbulent, and many people ran out secretly, but they were soon caught by the good people and pushed them in front of Chen Xu, "Marty, the promise is here, I'm going to see the naked running!"

"Haha, okay, please get out of the way. I will ride a bicycle and perform for you. In order to let the people of Xianyang know about this magical thing, I will decide to ride from the Academy of Sciences to the square in front of the Grand Hall of Chaogong. The journey will be at least fifteen miles. You can ride a horse and ride a car to witness this historic moment with me..."

"Everyone is out of the way, the marquis is going to perform a bicycle~"

Amid the shouts of yelling, Chen Xu pushed his bicycle out of the yard of the Fifth Institute again. At this time, there were more onlookers outside, all of whom were helpers and apprentices from the experimental factory, and even slaves and prisoners.

After the crowd had spread apart, Chen Xu pushed the bicycle and slid his legs and got on the bike beautifully, then hummed a small song and pressed the bell. With the ringing ring, he rode his bicycle straight to the gate of the Academy of Sciences. Along the way, there were people who kept running around seeing Qinghehou riding such a strange two-wheeled bike. They exclaimed, their eyes were glaring half a foot away, and their feet were almost staggering and chewing.

"Come and protect the Marquis!" A group of guards were stunned for a long time before they woke up. They all shouted with pale faces and turned over and knocked their horses on their belly and followed.

If the Marquis did not protect him and the Marquis would have any danger, they would all be chopped off by the First Emperor.

"Hurry, the carriage, the marquis has disappeared!"

Zhang Cangma Gan Lin Dong and other craftsmen also shouted and urged them. Thousands of people scattered birds and beasts, called for the bus, and called for people to lead horses. In an instant, the entire experimental factory became restless, and countless people couldn't wait, so Saya chased Chen Xu.
Chapter completed!