When farmers were busy raising seedlings, the rails began to be laid in the town. The spacing was the six feet stipulated by the First Emperor when he was "the same track".

It was just a track for the chariot building. As a result, Liu Bei was so happy that he might as well build an embedded concave rail along the street to drive a public carriage?

A rail carriage refers to a means of transportation that relies on horses to pull vehicles and wheels rolling on steel tracks. It can carry passengers and cargo several times that of ordinary carriages. It was invented by later British people. The first person to propose to embed carriage tracks into the pavement was the French. Before the steam locomotive was born, a rail carriage was one of the strongest carriers on land.

The rail carriage is a two-horse carriage with front and rear doors for passengers to get up and down.

Lousang is narrow in the north and south and long in the east and west. It is five miles away from the east to the west. It is not long or short. It is good on weekdays, but it is quite difficult to walk when it encounters rain and snow. If you can set up a station every other mile, wouldn’t it be wonderful!

Then he found Su Bo and explained what he thought in his heart.

Su Bo nodded and said: It is feasible. It is just that the young masters and the people of Qi should not ride in a carriage. If it is only for the officials and students in the town to travel, the carriage is enough. Why do you need to recreate this thing?

Yes.

It is not necessary to use a horse to organize households and people. Wait, don’t you just need a horse to pull a cart! The ox cart is too slow and the transportation capacity of the donkey cart is low. Liu Bei had an idea: What about mules and horses?

Su Bo nodded: Mule carts are feasible. However, the mules and horses that pull the carts must be strong and powerful.

Genes look at parents.

The stallion of mules and horses can be used to pick up the horses with Xianbei. The female donkey...

Liu Bei then found Su Shuang.

Su Shuang said, why not use the Bohai black donkey. Its body is symmetrical and strong, with developed muscles. Its head and neck are high, its face is straight, its mouth is straight, its eyes are bright, its back and waist are straight, its ribs are round, its abdomen is full, and its joints are obvious. It can breed large mules and horses with Xianbei heavy horses and Bohai black donkeys!

This ordered Zhang Shiping and his clan to go and sell the black donkey in Bohai. When the mother donkey in Bohai arrived with the boat, he saw that it had black fur on its body, no miscellaneous hair, tall and strong body, thick limbs, low and large hooves, heavy body, and heavy chests, which was the current "heavy donkey". It was of better quality with horse-born mule.

The design of the bus is also released.

Similar to a boat boat, it is divided into two layers, connected by ladders, and can ride a hundred people. Therefore, it is also called a boat boat.

Liu Bei personally tested on the track of Xilinyi. Two Xianbei horses pulled a cart with heavy horses and pulled them. If they didn't stop, the five-mile long street would take half a stick of incense.

Just wait for the mules and horses to slaughter, and you can drive in the town.

Forging and laying railway tracks are all labor-time. Mules and horses are also time to slaughter. Even if the technical specifications of the craftsman are finalized, it takes a lot of time to improve. Don’t worry. Take your time.

The iron smelting industry is very developed at present. Large iron smelting blast furnaces can produce more than 60 jin of steel (1 ton). At that time, there were three large iron smelting centers: Anyang, Gongxian, and Nanyang. Nanyang is located on the north and south boundary, and is also a channel between the Yangtze River, Han River and Huaihe River Sanshui Road and Guanzhong. Therefore, all industries in industry and commerce are very developed, especially the iron smelting industry is quite prosperous. At that time, Nanyang County had a population of more than 2.4 million, which was the highest among all counties in the country. The county was more than 70 miles in circumference. It is called Nandu. The industrial and commercial development reached its peak, and it even became the two largest central cities in the country, known as the Kyoto Luoyang.

The reason why Liu Bei knew so much about Nanyang was that in addition to Huang Zhong and Guo Zhi were all from Nanyang. The blacksmith shop in Yizhong also hired many good family management workers from Nanyang.

By the way, there has been a strange thing recently.

This matter needs to start with Yilong of Beihai. Guan Ning and the other two were interns, and they were in charge of the position of yezuo. The salary was generous, so they wanted to build a sword. A gentleman should wear a sword. "The Book of Rites·Takimo" uploaded: "Must wear a sword" means that you must wear a sword. "The Book of Rites·Shaoyi" also reads: "Look at the clothes of a gentleman, wear a sword, ride a horse, and fujia". It means that you should look at the clothes of a gentleman, wear a sword, and chariots, and don't talk about their prices.

In other words, regardless of the price, you must have it.

Then he went to the blacksmith shop of San Uncle's house and found good craftsmen to build swords. There were good craftsmen, and everyone called "Xia Lao". San Uncle hired him from Nanyang to discuss swords with three people, and his talents were quite talented. Everyone was very surprised. They had given up on this matter. Unexpectedly, after Tian Hua and others heard about it, they went to see it. Xia Lao must have answers when everyone asked. Tian Hua was overjoyed. So he asked Xia Lao to go to the school to discuss with Beihai Yilong.

As a result, Beihai Yilong, who had no rivals, gave up his defeat!

The school scene was in an uproar.

This mysterious old man Xia returned to the blacksmith shop afterwards and was obsessed with making irons all day long.

When the third uncle learned about it, he hurriedly came to report it. Liu Bei knew that he must be a hermit. After thinking about it, he handed over a piece of private jade token to him and gave it to him. He also said: When you want to come, you will meet him.

Mr. Xia did not refuse. He bowed and accepted it.

After the Little Heat, the heat gradually rises.

The towers and high buildings are heavy pavilions, and the wind comes. The five-story study room has wide windows and doors. Through the screen windows, you can overlook the green red and dark green, and there are many pedestrians. It is a vivid scene.

The Hou Mansion lives in the southeast. This mansion is mostly owned by Liu clan members and retainers. It can be said that every inch of land is worth every money. They are all five-story buildings slightly lower than the Hou Mansion. They are very grand. Now even the old Sang in front of the door is supported by a dedicated person.

This is the sign of the Marquis' Mansion. Whenever someone asks for directions, everyone answers: It is next to the five-zhang mulberry tree in the east.

Liu Bei is designing the shock absorber and brake of the car. As far as he knows, there are two types of shock absorber, leaf spring shock absorber and spring shock absorber. The spring is easy to make, but unfortunately, if there is only spring, after the vehicle bumps, the body will keep jumping up and down like a spring toy, so it is necessary to use a damping cylinder to control the effect of spring compression and rebound.

This is more complicated. The leaf spring shock absorption is much simpler.

The leaf spring section is rectangular, long arc spring steel. For very heavy vehicles, the leaf spring can be made of multiple gradually shorter blades stacked together.

It's not difficult to create.

Liu Bei drew the sketches and gave them to the good craftsmen to create them accordingly, and then gradually improve them in practice.

The brake design took a lot of effort. Liu Bei referred to his own carriage and found that the carriage did not have an independent brake system at this time.

The carriage and horse are connected by two straight wood called "阿" which is a hard connection. You only need to stop the horse and stop the car. At this time, the carriage can travel only seventy miles a day. The speed is not much faster, so the brakes are useless. However, if it is replaced with two upper and lower floors and a 100-person carriage will be driven on the rails. The inertia and the resistance are small. If there is no brake system, an accident will occur.

How to brake the vehicle as soon as possible.

Liu Bei thought of many ways, but the results were not good.

Then he asked Su Bo for inquiries.

Su Boluo thought about it and said: Why don’t the young master use gear transmission?

Liu Bei was stunned: Gear transmission?

Su Bo nodded and said: That's right. If the power of mules and horses is compared with the power of flowing water, can the cart be compared with the water discharge?

Liu Bei suddenly realized: the mule and horse pull the gear, and the gear is transmitted to the axle to drive the vehicle! However, how to stop?

Subo drew something on the drawing board: the ratchet gear can be used for braking to prevent the wheel axle from turning inverting.

Liu Bei was shocked. The so-called "ratchet" is the ratchet of later generations. It is pushed by the pawl and can only rotate in one direction, not inverted!

Su Bo also said: Herringbone gears can also be used for transmission gears.

Herringbone gears have high overlap, small axial load, high load-bearing capacity, and smooth work, which can greatly extend the service life of the bearing.

What else can Liu Bei say! In this era, there is such a powerful gear system!

Adding gears, everything is simple.

Ratchet gears are used for braking, and herringbone gears are used for transmission. They perfectly solve the start and stop problem.

Referring to the tackle carriage and the gear set on the water drainage, Su Bo and his many good craftsmen quickly designed a complete set of gear systems for the carriage.
Chapter completed!