rock ninja log

The psychic technique couldn't be used, and the loess with the scroll that could take back the ghosts didn't know where it died, so everyone had to use the most primitive method to transport the "witches" back.

On the same ground and the same object, sliding friction changes to rolling friction, and the friction becomes smaller. The size of the friction is related to the applied vertical force and friction coefficient. The vertical force is the "strange" gravity

, the friction coefficient depends on the poor road environment of the land of earth, so the key to changing the friction is to change sliding friction into rolling friction.

This very academic solution was first thought up by Zhuo Tu. He proposed to make a small cart and put "Gui" on it. The reason was that he had seen that the carriage could hold a lot of things.

Earth Release Chakra is the attribute with the best texture. If you use Earth Release Chakra to carefully carve it, you can make many interesting gadgets. Uehara tried it for half a day, and then added it bit by bit like a 3D printer.

Chakra finally completed a crooked model of the Eiffel Tower, and then Kari saw it and was ridiculed mercilessly. Uehara also felt ugly, and smashed it to pieces with a punch.

But now, it's time to need Uehara's help again. He Tu can't make a large cart made of rocks. Although they can make extremely flat stone slabs and extremely standard round stone wheels, they just can't.

Piece together a complete vehicle.

The structure of the carriage is very simple, but it requires a lot of technical details. Just by looking at it, it is impossible to restore it to a few people who have been honing their combat skills all day long and have limited knowledge of machinery and life.

Uehara drew a bunch of image drawings. It only took about ten minutes. Most of them were drawn by fumbling from memory. Things in the industrial era have a rigorous beauty. Uehara drew a Mercedes-Benz, a Dongfeng heavy truck, a Tiger tank, and a three-wheeler.

Tractors, excavators...

"I think this is very beautiful, let's make this!" The eldest lady in Zhenyi lost her temper again and pointed at the petite and exquisite Mercedes-Benz car. This posture was to ask everyone to agree with her choice.

"Mai, don't make trouble!" Uehara scolded in an elder's tone, and then showed another picture, "Truck, with bucket, four pairs of road wheels," Uehara rubbed his hands in distress.

How can I make a pile of rocks move without an engine?

Uehara was worried about other issues. Can everyone pull the big truck, which was made entirely of stone, and had a "strange" weight? But then Uehara gave up. He remembered taking a similar physics test,

The general meaning is that rolling friction is much smaller than sliding friction. Without the application of external force, the friction of an object moving on a non-smooth ground is much smaller than the gravity of the object.

We need bearings, we need to carve indents on the stone slabs to insert the torsion bars, we need wheels that are solid enough and the same size, we also need to calculate the size of the "trick", and then design the lightest car. No one has done this.

Uehara handled all tasks from design to execution by himself.

I have no experience in mechanical design, but I still know how to do simple scaling. First, I asked the reluctant Kari to take a measuring tape to measure all aspects of "Kui"'s body, and then Uehara redrawn it again and again to complete the various parts.

Get three views, and finally enlarge them proportionally. Give them to everyone who knows how to escape.

Everyone's task began. The finished products kept being sent to Uehara, but they were rejected by Uehara time and time again. Either the specifications were wrong or there were quality problems. Unlike steel and wood, the texture of stone is too brittle, even if there are a few cracks, it cannot walk.

The whole car body would fall apart if it was too far, so the finished wheels that Uehara rejected were already two people high.

When everyone's chakra was almost exhausted, they finally gathered a complete set of parts. Most of the time, it was easier said than done. The failed parts had been thrown into piles and piles nearby, forming a hill.

The final qualified product, which is similar to a rectangular unsealed rock box, is made of extremely compressed earth release chakra. It has a uniform texture. This is the earth release responsible for manufacturing. To him, the consumption of chakra is nothing.

The difficulty is just a few more expensive earth flow walls. The difficulty lies in Uehara's standards that are even more stringent than making a ninja tool.

The stone pillar responsible for the linkage bearing was made by Tugo. The friction between stone and stone must be serious, so Uehara rummaged through the scrolls for a long time and gave him a big bucket of edible vegetable oil, but he couldn't get it to lubricate it.

Where's the oil?

When I was responsible for assembling it, I had a lot of trouble. Everyone could lift the huge stone carriage together, but if two or three people had to lift it at the same time, and others controlled the direction and put it in the right position, it was too difficult. There was no way, Uehara again

We asked everyone to come up with a complete set of construction tools, such as fixed pulleys and movable pulleys. The moving pulleys save effort, and the fixed slides change the direction. There are no ropes. There are chains in the hell and Uehara, and then you can use the chains to cover the huge parts one after another.

It hangs in the air and moves around easily.

"Slow down, dig the soil, move the wheel forward a little! Yes, okay, that's enough, put it down slowly!" Uehara stood at a high place and directed everyone's every detail. Kari, who was doing nothing, stood beside Uehara and felt like he was commanding the overall situation.

Uehara is very cool. As for Uehara himself, he feels that if he wears a safety helmet, he will become a foreman on the construction site...

"Are you ready?" Uehara jumped down from the big rock, walked up and patted the smooth body. Apart from being a bit ugly, this big "truck" that was bigger than the "Kui" looked pretty decent, but it didn't have a front.

Because there is no engine, no fuel tank and no exhaust pipe, it is too inconsistent.

"Okay!" Zhuotu jumped around in the carriage excitedly. Can the big guy everyone built together really run? He really wanted to try.

"Then you can try it..."

"Hooray!" As soon as Uehara finished speaking, Kari jumped down from the side. He had long wanted to play with everyone.

When the cart was empty, the strongest Zhuo Tu could pull it up and run by himself, even though it seemed a bit difficult for him. Looking at his hands pulling an iron chain, the knotted muscles on his arms bulged, as strong as Spider Ball.

Uehara is a little ashamed of having a higher level of earth. It seems to be related to chakra. Ninjas with earth attributes are often very strong, and this phenomenon will become more and more intense with practice. Thunder ninjas often have reactions that are superior to others.

and speed.

As an earth-bending ninja with an advantage in strength attributes, Uehara's strength is not as strong as that of Mashiro, let alone...

Like a calf, Xutu tirelessly pulled the broken cart around and around. The squeaking sound was very harsh, but everyone seemed unaware and watched carefully.

"The quality is quite good..." Uehara nodded unexpectedly. After running dozens of laps, the car unexpectedly did not fall apart. Uehara was already very satisfied.

He was so addicted to playing with dirt that he refused to stop even when others asked him to. Instead, he ran faster and faster.

…

Huangtu has been here for a long time, and he knows very well how powerful "Cunning" is. He thought that a group of imps must be waiting for his arrival in embarrassment after a hard fight, but a group of people were laughing and laughing and didn't know what they were doing, so he decided to observe secretly for a while before talking.

"That's enough, Haotu!" Uehara shouted several times before interrupting Haotu. After Haotu heard the sound, he found that he couldn't stop the car. He was anxious and pushed back hard with his arms, but the mass was huge.

, the car deviated from the direction, rolled over several times, and fell to the ground with a bang.

There was almost a safety accident. Not only Uehara was startled, but Loess who was hiding in the distance was also so frightened that he almost jumped out.

"Are you okay, Kazuto?!" Uehara was the first to run towards Kazuto, who was almost covered under the car and was still in shock.

"It's okay!" Zhuo Tu said with a simple smile and wiped the sweat from his head.

"Well, you've been running for half an hour, do you feel tired?" Uehara looked at his watch, no more, no less, exactly half an hour.

"I'm not tired!" Zhaotu clenched his fist fiercely, and his arms swelled with muscles that made Uehara envious.

"Animal!" Uehara cursed silently in his mind. It was a vehicle that could fit into a vehicle that was half the size of a puppet. Moreover, the body of the vehicle was made of very dense rock. According to Uehara's estimate, the entire vehicle weighed at least several tons.

But he ran at a moderate speed for half an hour, and he still said he wasn't tired. You know, he was only fourteen years old, and his ninja's abnormal physical fitness...

After Uehara asked everyone to fix the car body, he climbed in from under the car and carefully inspected it inch by inch. After running for so long and even flipping 720 degrees to the ground, Uehara found no cracks in the end.

The quality is enough to complete the delivery task.