The efficiency of the drum truck for water irrigation can be hundreds of times and ten times stronger than that of the overturned car. The main reason is that the drum car does not use manpower and animal power, but uses the kinetic energy of water, which is continuous day and night, and there is a sound through the night. But the efficiency of the cylinder car is very low, in this regard, the overturning car is much stronger than the cylinder car, especially when the ploughing ox is used to pull and rotate, it is more obvious.

However, both tools have the absolute disadvantage of requiring a river or a flowing pond to use. If it is an agricultural well, then it can only be pulled by people.

However, Ma Chao roughly estimated that if the farmland where rivers flow through the entire Yongzhou were to use overturned trucks and cylinder trucks to draw water, then the fertile land in Yongzhou could increase to about one-tenth. After all, the Weishui and Yongshui tributaries are all over Yongzhou and are used to irrigate farmland, which is too much.

Such a large project, in addition to manufacturing countless dumps and cylinders, requires a large amount of financial support and countless manpower to build. In Ma Chao's vision, the construction model of the Fufeng River can be used for the construction of water conservancy in the entire Yongzhou. However, in this way, the establishment of the Ministry of Industry is more and more urgent.

Of course, there is still a prerequisite, that is, whether Zhou Maitian can build a tube car.

"The water drum truck is made of bamboo or wood, first make a large vertical wheel, and then use a drum made of logs to erect it, and install dozens of skeletons on the drum to support and connect........ Well, there are also wooden impellers and many hollow, beveled large bamboo tubes around the round wheel. There is a wheel on the top and bottom, and the lower wheel is half submerged in water, and there is a wheel belt between the two wheels. ”

"What is a wheel belt?" Zhou Maitian listened to Ma Chao's story, and he had fallen into the imagination of the façade. However, he still seemed very confused when he heard some strange and difficult words popping out of Ma Chao's mouth from time to time.

"It's a chain drive made of leather, which is used to pull and pull that big vertical wheel........," Ma Chao frowned, recalling the manufacturing method of the cylinder car he learned in the book, and stumbled and said: "The wheel belt also has to be equipped with many ruler-long bamboo tubes." The water hits the water wheel below and rotates, and the bamboo tube is soaked with water, and the river water is carried to a high place from the bottom up and poured out. ”

"No human or animal power is needed to make the vertical wheel rotate for a long time by the force of the current?" Zheng Hun is also a descendant of Lu Ban's high disciples, and after listening to Ma Chao's description, he still feels a little incredible.

Ma Chao was having a headache about how to explain the relationship between kinetic energy conversion to them, but he heard Zhou Maitian say: "Chiseling wood is a machine, the back is heavy and the front is light, and if the water is pumped, it is like a fertile soup, and its name is mallet." ”

"It's pretty much the same, it's the same as an orange. However, the orange tree uses the principle of lever, and the drum car replaces manpower with water flow, although the efficiency is not high, but it can be circulated day and night. After listening to Zhou Maitian's words, Ma Chao naturally knew that what Zhou Maitian said was an allusion to the orange tree taking water. However, the orange tree is 108,000 miles away from the cylinder car, and it is not the same tool at all.

In desperation, I planned to draw a drawing of the cylinder car. But when he looked back and saw Zheng Hun and Zhou Maitian, he smiled: With these two master carpenters here, what kind of drawings are they making? Directly making a tube car model is much more intuitive than drawings.

Just do it, and at that moment Ma Chao asked the two of them to find a piece of log, and use the skills of the two to cut out a big wheel. Later, some small bamboo tubes were installed on the runner to make the barrel mouth move in the direction of the runner. At the same time, in order to reverse the cylinder car to the side of the cylinder car when pouring water, and introduce the position of the water tank, Ma Chao deliberately made these bamboo tubes and the shaft of the cylinder car at an angle of about 45 degrees.

Supposedly, by doing this, the model is basically complete. When Zheng Hun and Zhou Maitian were in the open field, simulating the flow of the river with a basin, Ma Chao suddenly felt a little panicked: when he was in school, this product was the master of the eye, and his hands-on ability was super poor. This time in front of the two masters so tossed, if you finally find that this model can't turn, wouldn't it be a shame to go home?

What's more, the entire arsenal has a kind of deified worship of Ma Chao, although Ma Chao doesn't have much vanity, he definitely has some shame...... In the end, in the expectant eyes of the two, Ma Chao stubbornly put the model of the cylinder car into the path that had been dug, and Zhou Maitian slowly poured water on the side.

Open your eyes!

This cylinder car model is not a cross-century project, and Zheng Hun and Zhou Maitian are top carpenters, and they completely follow Ma Chao's instructions when they help, and they definitely meet the qualified standards. The two of them couldn't take their eyes off the model of the car and spun it automatically, and they couldn't even close their mouths in amazement.

"Lord, are you borrowing the power of ghosts and gods?" Zheng Hun watched and swayed back and forth, and finally looked at the windless weather, and finally admitted that the model really rotated automatically by the flow of water.

After breathing a sigh of relief in his heart, Ma Chao pretended to be unfathomable and said: "It's not the power of ghosts and gods, but that everything is powerful, and the good is like water. Although they are the spirits of all things, they still can't explore the mysteries of all things as much as they can ......."

At this time, Zhou Maitian fell into it, only to see that he changed the strength of pouring water for a while, and then changed the height of the cylinder car, and after testing it back and forth several times, he said: "Lord, my subordinates have found that this cylinder car can not rotate as long as there is water, but is related to the strength of the water flow and the height of the placement. ”

"Yes, the drum car rotates too slowly, or the water cannot be lifted, so you need to install some wooden or bamboo planks on the drum car to facilitate the drum car to get more kinetic energy from the water; Alternatively, you can immerse the drum in water a little deeper to gain kinetic energy, so that more water can be stored. Speaking of which, Ma Chao didn't worry in his heart: these things are written in textbooks, although his hands-on ability is poor, but his memory is very good.

"When the speed of the water flow is low, the bamboo tube should also be relatively small, otherwise, the energy obtained by the drum from the water is limited, which is not enough to overcome the reaction moment of the lifted water to the drum car. As long as the rivers and lakes in Yongzhou are investigated in advance, their speed and strength are known, and more tests are made, the real usable cylinder car can be made. ”

"The Lord is really a man of God!" Zhou Maitian had some signs of madness at this time, threw down the basin and ran to Ma Chao and said: "If the whole Yongzhou has overturned cars, cylinder cars, and orange trees....... In less than two years, the entire Yongzhou can be the richest state in the Han Dynasty! ”

But Ma Chao smiled, looked at Zhou Maitian and Zheng Hun and said, "The two of you, do you just want to benefit the Yongzhou side?" It must be known that this thing can not only be used in Yongzhou, but also in Dongwu, where Heze is dense, and even in the entire Han Dynasty where there is water. The two of them don't want this overturned car and cylinder car to become the most beautiful scene of the Han? ”

Zheng Hun and Zhou Maitian glanced at each other, and said one after another: "The lord has the world in his heart, and he can't wait." ”

At this moment, Ma Chao looked at the model of the car, and he suddenly thought that it seemed that there were many farming tools in the textbooks that could be used. In this way, coupled with the promotion of his new crops to Fufeng and even the entire Yongzhou planting next year, how can there be any more starvation deaths in the Han Dynasty?

At this moment, although Ma Chao was not on the battlefield, his heart was also ignited. It seems that the countless acres of farmland in Nayongzhou are the enemies he wants to conquer.......