After compiling various factors that could be imagined, Zhao Bing stayed until midnight to complete the overall design of the chariot and drew out the pictures of each component one by one. After sleeping for two hours, the wake-up call sounded. After washing up, he rushed to the school grounds to do exercises. Today was not bad. Zhao Mengjin had already led a group of officers from the Chief Office to wait in line, and Chen Fenglin also led the officers from the Chief Office of the First Army to do exercises without any questions.

"How long has it been since Zhao Zhien had sex?" Zhao Bing had been following the morning exercises of the guard camp, and the subjects were no different. He first had a long-distance running with a lightweight ten-mile distance, followed by physical fitness and queue training, and the intensity was much greater than that of other troops. After the end, he saw Zhao Mengjin sweating heavily and panting, and raised his arms and wiped the sweat from his face with his sleeve and chuckled.

"I... I haven't had sex early for more than a month!" Zhao Mengjin grunted for a long time before speaking.

"Haha, I'll grow so big after not having sex for a month. It seems that the food is good!" Zhao Bing smiled and did not blame him, but reached out and pulled down his belt. Only one eye left was left and it was over, and then patted his stomach and said.

"I know my subordinates have made mistakes and will definitely abide by the military rules in the future. I will never dare to slack off again!" Zhao Mengjin stood attentively and saluted. He knew that the young emperor was familiar with military affairs and could not hide his words. It is the kingly way to admit his mistakes quickly.

"As the chief officials, you should be an example. If you are lazy, you will be lazy. This is the first thing; in addition, you are often in war and you are negligent in training. At that time, you cannot walk or ride a horse. How can you lead the troops? I am afraid that you will be defeated and you will not be able to run!" Zhao Bing pointed at Zhao Mengjin and Chen Fenglin, and then pointed at the trembling subordinates behind them and said.

"I will follow Your Majesty's teachings and will definitely train strictly in the future!" Zhao Mengjin saw that Du Yuhou beside him was pale and his body shook, gritting his teeth and standing attentively.

"A soldier is a soldier, and a nest of bears. Just look at what kind of team you eat like pigs, and you can imagine what kind of team you will bring out!" Zhao Bing said after hearing this, "I tell you that officers and civilians at all levels will also participate in the assessment from now on. If you fail, you are forced to retire. It is absolutely unwilling to do so."

"Yes, I will remember the lesson of Your Majesty!" Zhao Mengjin was also a senior general who commanded tens of thousands of imperial guards. He was scolded by the little emperor in front of the soldiers and generals. He was a little unable to hold back. His veins bulged, and his face was blushing like a red rabbit horse and blood dripped. He stood up straight again.

"I didn't hear it!" Zhao Bing said sternly again.

"I must remember the lesson of Your Majesty!" Zhao Mengjin felt that she had lost all her face today, and glared at her subordinates around her and shouted loudly.

"Dissolve!" He did not disband here, and no matter where the other departments on the school ground dared to move, they stared at the little emperor getting angry there. Zhao Bing seemed satisfied now, sighed and waved his hand helplessly.

"Discontinue!" Zhao Mengjin turned around and ordered loudly. At this time, the troops lined up with the orders from one level, but except for the footsteps, no one could tell that these big guys were very upset, so it would be better not to cause trouble.

After the troops dispersed, Zhao Bing walked directly to the well to wash his hands and faces, reorganized his military appearance, and then walked towards the canteen for dinner. Zhao Mengjin could only smile bitterly and followed the little emperor behind him, while Chen Fenglin ran to the canteen, and asked someone to quickly prepare to leave a table for His Majesty, and told the fire army not to make special things, and that his food should be the same as ordinary soldiers...

"Your Majesty, the baggage camp is ready, I will accompany you!" I don't say anything and sleep. It is not only the fashion of this era, but also the regulations of military discipline. The little emperor maintained the habits in the army when eating. In a blink of an eye, a bowl of porridge and three steamed buns had already been eaten. Then he finished washing the bowl and left. Zhao Mengjin hurriedly chased after him.

"I'm afraid I'll be here for a few days this time. Will you have no military affairs if you accompany me every day?" Zhao Bing said as he walked.

"Your Majesty is joking. How can you not have military affairs? You are worried that Your Majesty will summon you to me if you have something to do." Zhao Mengjin said with politeness.

"Just leave me to join the army and accompany me, you, the general, to accompany me." Zhao Bing said with a blank expression, "Are you not confident in the army you belong to and worried that I will be in danger?"

"Of course not. The subordinates of the Jiangdong army are all loyal to Your Majesty!" Zhao Mengjin said quickly.

"Since that's the case, why should you be with me all the time?" Zhao Bing stopped and turned his face.

"This..." Zhao Mengjin really didn't know how to answer, and it was wrong and he couldn't say it after a long time.

"You really have nothing to do, you can train those guys. Today, I just scolded you in public, and even if I train them all to death, no one dared to fart!" Zhao Bing smiled and whispered in his ear.

"Well, I understand!" Zhao Mengjin smiled evilly after hearing this, and the depression in her heart was wiped out. She bowed and wanted to leave.

"Remember to find someone smarter for me, don't be silly!" Zhao Bing quickly emphasized.

"Don't worry, Your Majesty!" Zhao Mengjin couldn't hide her excitement...

Although Zhao Mengjin was very confident in his people, he still chose a relatively closed place to let the little emperor start construction there. Zhao Bing was much more generous, leaving only two guards to serve him, but he also knew that the guards must be staring nearby. If someone had any abnormal movement, he would be afraid that the first one would be shot and killed.

The baggage battalion was equipped with military craftsmen, responsible for repairing damaged weapons and battalions, and also built defense or siege equipment during wartime. When Zhao Bing arrived, they prepared the tools and materials according to their own wishes. He did not say much nonsense, hung up the drawings he had drawn, and explained them first, so that they could roughly understand what they were going to build, and then distributed the parts to the corresponding craftsmen, so that they could make them according to size and style, and he was responsible for explanation and inspection.

The chariot designed by Zhao Bing adopts the style of a four-wheeled van, with a length of one meter and eight feet wide, a height of eight feet, and a cabin of six and a half feet high. Because the steering frame is installed to achieve single-axis steering, the wheels adopt a structure of small front and large rear. The size of the wheel determines the vehicle's ability to pass through and stability. In war, it is impossible for you to pick a flat ground in the wilderness and not always drive on the main road. Therefore, you need to choose a large-size wheel, with the diameter of the rear wheel being five feet and the diameter of the front wheel being four feet.

In this era, it is impossible to use rubber tires. Wooden wheels are usually used and reinforced with iron leaves. The first priority of a chariot is to be strong, especially the wheels. Large wooden wheels are more likely to be damaged in the wild, and it will be a big problem if they are halfway. Therefore, Zhao Bing uses iron spokes and wheels with wooden strips embedded in the hub to reduce weight as much as possible while ensuring solidity.

In the chariot's carriage, Zhao Bing did not adopt the bucket-shaped style of the Hus chariot, but the traditional square shape, with the roof section in an isosceles trapezoid. In order to add auxiliary guard plates, he changed the wheels to an in-house, which avoids friction and collision between the guard plates and the wheels. It can reduce the width of the vehicle, enhance the passing ability, and improve the battlefield survival rate.

Everyone knows that the lower the center of gravity of a vehicle, the better the stability. The modern racing chassis is so eager to stick directly to the ground, which is the result of pursuing stability. The large-sized wheels will inevitably raise the car and move the center of gravity upwards. In order to take into account both the passing and stability, Zhao Bing used a sunken car in the design. This not only solves the problem of excessive center of gravity, but also increases the height in the car, improving the volume and the comfort of the passengers.

On the premise of ensuring that the occupants can stand up straight, Zhao Bing transformed the sinking part into a storage box to hold the occupants' personal equipment and reserve grain and drinking water, so as to improve self-sustainment and activity space. Since he is an expert in this field, he will naturally try to make use of all the space, and of course the driver's seat will not be spared. It was changed into a storage box, where two axes, two shovels, two picks, two hoes and a set of repair tools are placed.

Zhao Bing chose pine wood boards with corrosion resistance, strength and price. Considering the power of the current crossbow, the three-inch wooden board is sufficient for defense. Therefore, in addition to the bottom plate, the side wing and top plates are both of this size. The most creative thing is the "fin" structure of the left and right wing plates of the car, that is, both wing plates can be lifted as a whole, shaped like an open bird wing. In this way, there is no need to consider the direction of the vehicle in wartime like a side wing, and the height of the roof can be raised when the wing plate is lifted, so as to facilitate the release of the gun smoke generated by the firearm.

In order to facilitate shooting, there are five shooting holes on each side of the wing plate, which is just right in height to allow the gunman to keep shooting in a standing position. Zhao Bing designed foldable chairs in the lower positions on both sides of the wing plates, so that the occupants can sit down while driving and reduce fatigue. The width of the car also allows soldiers to lie horizontally and stretch their legs, so that they can sleep comfortably in the car without having to sleep in the tent. In addition to designing a small door similar to the Hus chariot on one side of the wing plate to facilitate the occupants to get up and down, he also left a valve on the bottom plate for escape and attacking the enemy.

The driver's driving position is naturally in front of the car, so that they can observe the road conditions ahead. If it were not for the lack of conditions, Zhao Bing also planned to install two rearview mirrors. In order to protect their safety, not only were there guard plates on both sides, but the roof also poked forward to shelter them from the wind and rain, but also protecting the flowing arrows falling from the sky. Anyway, he did his best to think of them.

Although Zhao Bing has considered all the conditions that the chariot should have and the combination of man-machine, what he is most worried about is the chariot's self-weight. This is not a simple problem of installing more or less, but involves many problems. First of all, the vehicle's self-weight is too large and its traffic capacity is limited. It is easy to get stuck on the soft road surface. It will not only reduce the marching speed, but also have to consider the marching route. It is even more troublesome to encounter rivers. If you think of the bearing capacity of the bridge, you must further strengthen it when building the bridge.

Then there is the problem of traction. According to the prevailing algorithm, the dragging force of a horse walking for a long distance is equal to its weight, while the range of horses that Zhao Bing can choose is very narrow. Now he cannot get heavy horses from Europe and Siberia, while the horses in Guangxi and Dali are too small to be competent, so he can only use Mongolian horses with no choice.

The weight of a Mongolian horse is roughly between six or seven hundred kilograms, and the traction force is about six hundred kilograms. If two horses are used, it can drag about ten stones. Four wheels can be used to improve, but it will not be too high. In this way, the car body is too heavy and the load capacity can only be reduced accordingly. This is not a problem of increasing horses. It is necessary to know that the food consumed by a horse every day is equal to the amount of five people, which increases the pressure of material replenishment, that is, several times of consumption are needed to increase the transportation volume. Therefore, Zhao Bing requires that every component installed on the car be weighed and records are kept so that it can make accurate improvements.

Everyone around Zhao Bing knew that when he was trying to make new objects, he would never be stingy with money. However, he did not offer a heavy reward this time, but he also paid for the improvement of food for all the participants, and the big fish and meat were full. The soldiers of the baggage battalion were also proud of working with the little emperor. Two days later, with their joint efforts, they completed the production of the first prototype.

It can be said that the prototype car basically met Zhao Bing's design requirements, but it was not surprisingly overweight. His design premise was that a chariot could take a battle group of fourteen to seventeen, including fifteen musketeers and two drivers. Calculated that the crew and their carry-on equipment were only 1,500 kilograms, and the two horses would definitely not be able to drag, so they could only choose four horses for traction. But even so, the weight of the car was very bare, let alone carrying more supplies.

Zhao Bing could only make plans in the car. He found that the largest part of the car, except for the wheels, axles, and the body frame. Don’t think about the wheels, but he knew that iron pipes of the same diameter and solid iron columns had the same strength, that is, the load-bearing force was the same, but not only saved materials, but also reduced weight.

So the axle became hollow iron pipe, and the bottom frame and bottom plate also used bamboo with toughness and strength or strength that was not inferior to or stronger than wood, thereby reducing the weight of the car body. However, Zhao Bing was still not satisfied and had no idea that he could only hit the cabin plate. This problem was very difficult. If the protective force was weakened, it would be less than the cost. But it was not difficult for him. After the experiment, he chose a sandwich structure cabin plate.

The outermost layer is still made of pine wood, but the thickness is only one inch. Straw mats are used in the middle, and after being rolled, it is increased to reduce its thickness. The inner layer is clamped with less than half an inch of wood. This not only reduces the weight, but also reduces the cost. After all, this is a rice planting area, and straw is basically of use except for burning fire.
Chapter completed!