"It's not that easy......," Liu Ponu shook his head.

It is very simple to increase the number of people, and with a large amount of income from the Quyuan plow, the imperial court can now support this expenditure.

Besides, increasing manpower and increasing resource production is to build tractors, and this thing can produce benefits when it is made, and the imperial court is of course willing to invest.

But the problem is that he doesn't want to build an engine that can be built, in order to be able to mass-produce the engine as soon as possible, even if it is a defective engine, Liu Ponu and others have been scratching their heads in a hurry recently.

Mass production is not a trial production, some craftsmen in this yard have been studying for so long, and every component is familiar, so it is not difficult to copy an engine, and if there is no shortage of materials, it can be done in a few days.

But in order to ensure the effect, here it is all integrated casting, and then polished.

Of course, this method can be extended to mass production, but the requirements for craftsmen are extremely high, and it is basically a return to the previous manufacturing level.

Similarly, having an engine built by a single craftsman is not conducive to technical secrecy.

Although there are not so many foreign spies now, who can say for sure some things?

As the so-called prevention is better than prevention, Liu Ponu still plans to manufacture the engines separately and adopt an industrialized and standardized production process, which can speed up the manufacturing speed and produce more engines as soon as possible, and the other is to avoid technical leakage and reduce the technical requirements for production craftsmen.

But unfortunately, after the test, it was found that there is no problem with standardized production according to the flow model, and the biggest problem has returned to the original point again.

"Although the integrated casting is troublesome, the biggest advantage is that it can reduce the point of air leakage, and can effectively provide power guarantee, we have tried a lot of materials, and currently only found a way to solve the problem ......of air leakage, but so far we can't afford to use this method," Liu Ponu said with some frustration on his face.

"How?" Liu Che's face was full of concern.

Although he didn't know how big the impact of the air leak was, and he didn't know what it was all about, he still wanted to find out when he heard that there was a solution to the problem.

"Cowhide!" Liu Ponu said directly.

"Cowhide?" Liu Che frowned, this thing seems to be really useless.

Cattle are precious strategic materials, and every cow needs to be cherished and protected, and it is an important productive force in the current society.

Even the powerful were reluctant to kill a cow, but Liu Ponu said that the cowhide could solve the problem of air leakage.

"Yes, we have tried a lot of glues and various animal skins, and the best performance at the moment is cowhide......" Liu Ponu spread his hands with a helpless face.

The first engine has been replaced with cowhide seals, and it has been running stably for almost half a month without any problems, and the power has been slightly improved.

The steam engine that failed at the beginning was also tested with cowhide, and it has also been idling for half a month, and there are no problems.

It turned out that cowhide could be a substitute for rubber, and in order to reduce the wear caused by friction, Liu Ponu added tung oil to lubricate it.

This effect is the best, as for the durability problem, no one knows about this at present, and his durability can only be obtained through experiments.

I used all kinds of glues before, and it turned out that it did have an effect when it was cooled, even if I soaked it in water, there was no air leakage, but once I started working, after a period of heating, it didn't take long for the air to leak.

Therefore, whether it is a steam engine or an engine, the selection of sealing materials must withstand the challenges of high temperature and friction.

As for the steel gasket seal, this does not need to be considered, and the current industrial level cannot make that kind of flatness steel gasket at all.

Even if you can make a steel pad that can meet the required flatness, you must ensure that the flatness of other accessories can meet the requirements, otherwise it will be useless.

Of course, Liu Ponu also knows that the best sealing material is rubber, and with rubber, he can not only make sealing materials, but also make wheels to increase the speed of movement or something.

But the problem is that the rubber tree is native to South America, and now Liu Ponu can't go to South America at all, and the water can't quench the thirst of the near, even if he sends someone to build a ship and go to sea now, I'm afraid that this person won't be able to come back in a few decades, and it is a question whether he can even get there.

"How many engines can be made from the skin of a cow?" Liu Che frowned, not knowing what he was thinking in his head.

"If you integrate manufacturing, you can build about sixty or seventy units, and if you consider technical secrecy, you can only build twenty or thirty units at most for a cow." Liu Ponu said the data calculated before.

Even if it is for the convenience of manufacturing, for the sake of technical confidentiality, it must be manufactured with flowing water.

But how much is a cow worth?

And what is the number of cattle?

Many villages in Dahan, or even the entire village, do not have a single cow, and all the cultivation is solved by manpower.

"How many engines do you need for 20,000 people?" Liu Che thought about it for a while and continued to ask.

"That's a lot, according to my assumption, a car will be equipped with five to six people, this kind of car is a combat vehicle, 10,000 people should be equipped with at least 100 to 150 units, the remaining about 9,500 people, according to a car can carry ten people to calculate, minus the number of people driving, it will also take 860 to 870 units to meet, and then take into account other unexpected situations and logistics needs, if it is an expedition, at least 100 vehicles must be prepared to support."

"If you calculate it this way, 1,100 people will need about 1,100 cars to basically meet the demand." Liu Ponu was very helpless.

There are only eleven drivers on the face of a car, which seems to be a lot, but this is already the result of calculations.

It is impossible for an expedition to only pull people and not materials, even if the coal is resistant to burning, but if it is an expedition, at least half of the load on the car must be kept to load coal, otherwise it will be embarrassing to stop and find fuel while running.

Counting the problem of eating and drinking the people in the car, of course, the most important thing is the power of the engine, not considering anything else just pulling people, a car squeezing and pulling 30 people is not a problem, the big deal is to sacrifice some speed, do not consider the problem of wear and tear.

But fighting a war is not pulling people, unless Liu Ponu can increase the power of the engine.

Moreover, it is said that 1,100 units can meet the demand, but considering the current industrial level and the failure rate of equipment, it is basically certain that if you want to go on an expedition, you must prepare at least 1,500 corresponding parts for the vehicle, especially the accessories on the engine......

However, Liu Che didn't think about it so much, he was just thinking about whether it was worth it.

According to the calculation of 1,100 units, it seems that 50 or 60 cows can meet this demand, and 20,000 people only need 100 to 120 cows.

If you do this, it doesn't seem unacceptable?

Of course, it may not be easy to accept a full-scale rollout, and even if you decide to kill cattle to build an engine, you have to consider that the staying power of the engine can exceed the time and cost of raising cattle.

Don't kill the cow in one go, but the short-term benefits are seen, but when the cowhide needs to be replaced, it is found that the calf has not grown up, and it will be embarrassing if it falls into the point where the skin is not available.

"Kill!" Liu Che waved his hand, and resolutely decided on his face: "I will give you 200 cows, and first build the engines that the new army needs!" ”

"Uh-huh???" Liu Ponu looked at Liu Che with a confused expression.

Waterfa?

It's really not wrong for people to give you a temple name for Emperor Wu of the Han Dynasty?

Some people in history say that you are a reckless soldier, and it seems that there is nothing wrong with that.

In order to be able to fight, 200 cows were killed when they said they would be killed?

Do you know how much less land will be cultivated in a year without these 200 cows?

If it's just the accounts on the books, then how is this deal cost-effective, but the problem is that he can't calculate the accounts for this kind of thing......

"I know you're in a hurry, but please don't worry!" Originally, Liu Ponu was in a hurry, but now it has been replaced by Liu Che who is in a hurry, and Liu Ponu is not in a hurry.

"The Great Wall can't be built in a day, so let's take our time and make a plan for this."

"First of all, wait for me to test it well, to see how the durability of the cowhide is, if it is broken in less than two months, it means that this is only an emergency method, and can not be used for a long time, and two months is not enough to raise a cow, if it is equipped with a large number of people, not only can not see the long-term benefits, but will lead to a large number of domestic cattle shortage, which will lead to a series of inevitable consequences."

"If the cowhide can last for half a year, then we can consider using a lot of cowhide, but before that, we should encourage the people to raise cattle, and use a few years to accumulate the number of cattle."

"Cars will definitely be built, but they may not be built according to my plan, so we can only cancel the combat vehicles and troop carriers, and only build some vehicles responsible for logistics and transportation, so that 10,000 people will have two or three hundred vehicles."

"When encountering the defense, the car is surrounded horizontally in a circle, the cavalry of the Huns can not pass, and can not overturn, when encountering a sortie, the soldiers can go directly to the car to pass, although it is troublesome, the effect is a little worse, but it can almost do want to go The enemy can't stop it, and the tactical goal that the enemy can't drive away."

"Wouldn't that be much less effective?" Liu Che's eyes were evil, and he looked at Liu Ponu thoughtfully, I knew that you kid must have a replacement for Fang Huan.

Not only did I know, but I also knew that you kid had thought of this a long time ago.

"It's not bad, it's not bad, the impact is not enough, then use firepower to make up for it......" Liu Ponu hurriedly said.

He had known for a long time how energetic Liu Che could be in order to fight, and now he had personally experienced that kind of madness.

Of course, Liu Ponu has a substitute for Fang Huan, but he just thought it was too backward and there were too many restrictions, so he was too lazy to do it.

But now that there is a problem with the tank, the old method can only be used to increase the firepower to make up for the lack of tanks.

Fixed-loading ammunition is not easy at present, but you can give it a try, the wisdom of the ancients is endless, maybe there is a solution?

Even if it can't be solved, Liu Ponu can get a flintlock pistol out, isn't it just a matter of work, as long as there are enough people, firepower will not be a problem.

Anyway, no matter how it happens, Liu Ponu just can't let Liu Che give that order.

As soon as he became the prince, he fooled the emperor into killing cattle frantically, what he knew was that he knew what was going on, and he didn't know that he thought he was a starving ghost who wanted to eat beef, and this pot prince didn't carry it......