"Master Hou, although I don't know how to build a car, but the streets are full of two-wheeled carriages and four-wheeled carriages, not for, but can't, at the moment our carriages are on the road along the ruts, four-wheeled carriages go straight is okay, once you encounter a turn, the front and rear wheels will be stuck in the ruts and can't turn, it is extremely easy to roll over or even break the wheels...... Zhao Qing cautiously pointed to the carriage on the blackboard and said.

"Master Hou, what Director Zhao said is right, the four-wheeled carriage can't turn, it's not practical!" Sun Shujiong nodded.

Chen Xu involuntarily jumped a few times with his cheeks, he only thought of the idea of the bus just now, and even ignored the problem of ruts.

Because this is the Qin Dynasty, the road is paved with dirt, and the wheels of the long time have formed two parallel ruts, so when all the carriages run on the road, the two wheels fall in the ruts, because the width between the wheels of the carriages of the six countries is inconsistent, resulting in different rut widths after the carriages go abroad, and the road is inconvenient and it is extremely easy to damage the wheels, so Qin Shi Huang waved his hand: unify one ha.

So the car is on the same track!

At present, there are two ways to solve the problem of four-wheeled carriages, one is to pave the roads in the city into cement roads, so that there are no ruts to run casually, naturally there is no problem of turning, and the other is the same as the car, the whole front and rear wheels can be rotated separately suspended chassis, so that the front and rear wheels can be flexibly steered.

But these two methods are not easy to solve, to pave the roads of Xianyang City into cement roads, I am afraid that the cement consumed is more than the cement consumed to build ten Weihe bridges, all paved is estimated to be hundreds of miles, not to mention that the cement supply is not available, even if the supply is to be paved at least a few months, can not wait.

Then the second method can only be used, and the four-wheeled carriage has a suspended chassis.

And the suspension chassis ...... Chen Xu felt that he didn't have any spectrum in his heart, and he had heard it every day before, but his eyes were completely black on how to hang it.

However, it seems that if you want to vigorously develop land freight in the future, the advantages of four-wheeled carriages are still very obvious, so you can study the suspended chassis first, because whether it is a cement road or a rutted road, flexible steering is an inevitable condition for the development of vehicles in the future.

Since the four-wheeled carriage did not exceed the system, Chen Xu did not have too many worries, and asked Zhao Qing to continue to find craftsmen who were good at making carriages, while he took chalk and began to study the suspension system on the blackboard.

Half an hour later, Zhao Qing sweated profusely and found four craftsmen, as well as a middle-aged official wearing a six-grade official robe.

"Master Hou, these are the captains and craftsmen who are responsible for building the carriage in Shaofu, they are experienced, just ask for it!"

"Thank you, Director Zhao, you are busy, I will discuss it with them!"

"Yes, the subordinates are retired!" Zhao Qing left with his hands gone, leaving an official and four craftsmen looking at Chen Xu respectfully.

Chen Xu was no longer verbose, and said that he was going to build a four-wheeled carriage, and the five of them were even more excited than the reactions of Zhao Qing and Sun Shujiong, and shook their heads together like rattles.

"Master Hou, the four-wheeled carriage can't drive in the city!" The chief of the car vetoed, and the four craftsmen also nodded together to express their serious agreement with the leader's statement.

"I know, right now, it's because of the cornering problem, you see, I designed a suspended frame......"

Chen Xu pointed to a steering device that he had drawn after consuming tens of thousands of brain cells, in fact, it was a structure similar to that of a walk-behind tractor, the rear frame bears the weight of the main trunk, and the front and rear bodies are connected together with a rotatable bolt structure, and the front wheels and wheels are connected together to form a steering structure, because the power is a horse, so there is no need for anything in the brake clutch, and the parking start depends on the command of the groom.

With Chen Xu's explanation, the car captain and the four craftsmen all saw that their eyes were shining, after Chen Xu finished speaking, the car captain couldn't help but nod again and again and said: "Miao Miao~~, Hou Ye is full of whimsy, this is indeed a good way to turn, plus a movable device in the middle of the front and rear wheels, it does not need to turn at the same time, so that it will not be pinned by ruts and cannot turn." ”

"Yes, yes, this method of Master Hou will definitely work!"

The chief car builder and the four craftsmen found by Zhao Qing are all Shaofu's special hands for building carriages in the palace, and they are not comparable to ordinary craftsmen in terms of car-making technology and knowledge, so after listening to Chen Xu's explanation, he suddenly became excited.

In the final analysis, the four-wheeled carriage is much more powerful than the two-wheeled carriage whether it carries people or goods, and the only disadvantage of impracticality is the turning problem, and this is also the reason why the four-wheeled carriage in China has not developed, and the flexible steering function of the four-wheeled carriage is also a necessary way to transform into a car, and eventually must overcome this difficulty, and the simplest steering of the current use of a walk-behind tractor is just a transition.

"My four-wheeled carriage is built longer, at least to be able to ride ten adults, so the load-bearing rear axle and wheels and frame are required to be very strong, the rear wheels can be made appropriately thicker, the front wheels are responsible for steering, can be slightly smaller and more flexible, the factory outside the city has high-quality steel, all kinds of connections can also be cast with steel, the body can be made of wood and bamboo, you take my warrant to go to the factory outside the city to find the two masters of Gong Chuan Sheng and hemp pole, you need everything to let them cooperate to build, Samples must be made as quickly as possible! ”

"Hou Ye, rest assured, we can build a sample of this suspended four-wheeled carriage in three or five days at most!" The chief of the car and the four craftsmen all nodded their heads in agreement, and then ran away excitedly with the warrant stamped with the seal of the president of the academy.

Once a four-wheeled carriage capable of making easy turns was made, the chief and the four craftsmen would be rewarded, and the enclosed four-wheeled carriage would soon become popular throughout the country to replace the two-wheeled carriage.

Because the two-wheeled carriage is indeed convenient and flexible, but the load capacity is small and easy to overturn, the most important thing is that the balance is not good, so most of the weight of the carriage is pressed on the horse's back through the wheel, which is a very large load for the horse, which seriously affects the horse's driving speed and distance.

But the carriage is different, the carriage itself is perfectly balanced, the horse only needs to pull and run, and can run longer distances without the pressure of weight.

Not long after the craftsmen left, Yang Kun also came to the Academy of Sciences in a horse-drawn carriage and sent the students' home addresses he had copied from the Women's College to Chen Xu's office.

Chen Xu took the address sheet and turned around to look at a map of Xianyang City hanging on the wall, and found that although there are both southeast and northwest, there are more in the west of the city and in the south of the city, the west of the city is mainly inhabited by princes and princes, the south of the city is mainly inhabited by wealthy businessmen, both in the east of the city, and the north of the city is some wealthy families near Xianyang, although it is not a rich and noble family, but they are mostly old Qin people, that is to say, the ancestors are still relatively prominent, but now there is some decline.

"Yang Kun, you look for this registration form and map, looking for a few students to live in a more concentrated location to mark out, the requirements of these points are to include all students, walk no more than two miles, and finally set up ten different routes from the college to return in different directions in the southeast, northwest and northwest, and connect all these marked points in series, and then these lines are fixed school bus routes to pick up and drop off students, and after the routes are designed, take people to the field to survey the environment, and lay eye-catching wooden signs at the pick-up and drop-off sites. And mark a name on the wooden sign, for example, near Zongshan Villa is marked as Zongshan Villa Station, near Huaxia Qianzhuang is marked as Huaxia Qianzhuang Station, all stations are determined to draw a detailed bus operation map and wait for the future expansion of standby, and so on after the school bus runs for a period of time, we can open a bus company......

Yang Kun roughly understood what Chen Xu meant at this time, although there were still 10,000 doubts in his heart, but thinking of Chen Xu's identity and all kinds of unbelievable things he had done, he still didn't ask anything, and sat behind a desk with a pen and paper to draw a bus route map against the map.

"After Yang Kun's site and route are completed, you arrange for people to follow you to survey the terrain and set up the site, by the way, and then find more than a dozen veterans who are familiar with driving as drivers, and let them drive along the designed route to familiarize themselves with the road conditions after finding it!" Chen Xu instructed Sun Shujiong.

"Yes, don't worry, Master Hou, your subordinates will do it!" Sun Shujiong gave up his hand and left.

Xianyang City has a population of one million, gathering nearly half of the rich merchants and almost all the princes and princes under the eyes of Daqin, the beggars living here are much better than other places, any big family can satisfy hunger with a little food leaking between their teeth, except for the winter will freeze to death a lot of people, starvation is very rare, here not only brings together the bustling hundred disciples, but also brings together merchants from all over the country to sit in Jia, the prosperity of Xianyang dare to call the second, there is no city on the earth dare to call the first.

With so many people, travel is naturally bustling, although the civil and military ministers and wealthy businessmen must have carriages at home, and travel is also carriages and horses, but after all, this is all in the family with a relatively high status, for example, Chen Xu's mansion can go out to take a car, except for their family, only the housekeeper and the personal maid in the inner courtyard can take the car, the guards can only ride horses, and the domestic servants can only walk without special circumstances, because horseback riding is also a huge consumption, and the same is true for other rich and powerful families.

Ordinary small rich families may not have horse-drawn carriages, so they can only ride ox carts or donkeys.

As for the large number of ordinary people living in Xianyang, donkeys and horses can only walk, there are neither rickshaws nor wild numbness on the street, and there is no Didi special car, if you can't rub the car and horse when you go out, you can only walk, if you go from the south of the city to the north of the city to do things, it takes an hour or two just to walk back and forth.

Therefore, Chen Xu found that the ancient people walked very well, and they found it in Xiaohe Village before, more than 20 miles back and forth from Xiaohe Village to Qinghe Town, Chen Xu's tired legs trembled after a trip, but Niu Dashi and even Xing'er were able to easily persevere, and the villagers who looked thin and thin could talk and laugh loudly along the way with things on their backs, and their bodies were all the same malnutrition, but Chen Xu just felt that his soul was not strong enough, and he was tired when he thought about it.

If there is a bus in Xianyang City, then it can solve the problem of many people traveling, starting with one money, two dollars through the city, and there is no need to take care of the carriages and horses, it is estimated that many large family servants will abandon the cars and horses in the house to take the bus instead.

And when the Weihe Bridge is repaired, the bus can even go back and forth on both sides of the Weihe River, connecting Xianyang Palace, Zhangtai Palace, Chang'an Palace, etc., and it will be more convenient for people to come and go.

At present, the Faculty of Liberal Arts is seven or eight miles away from the west of the city, and thousands of people work there, but most of them have to go into the city to rest sooner or later, so after the four-wheeled carriage is studied, a fixed bus line from the Faculty of Liberal Arts to Xianyang City can be opened to facilitate the people who come and go to work.