Facing many faces full of curiosity, Ji Thief laughed: "This is our Harmony bullet." ”

As he spoke, the thief slapped his hand, Usma cleared his throat, and explained to the engineering tribesmen according to what the thief said yesterday.

At the end, Usma didn't forget to add to herself: "The patriarch said, if we can make this carriage this time, we will give our engineering department two days off, how about it?"

The people of the tribe were stunned at first when they heard this, and then shouted wildly.

It is known that the engineering department did not take a vacation.

Although the engineering department has a high salary second only to the hunting department, it is tired.

Now listening to Ji Thief talk about the holiday, can you not be happy?

Usma looked at the thief triumphantly, as if he was inviting merit, as if he was saying look at the patriarch, my words drove everyone's emotions.

The thief was a little speechless, and looked at Usma directly, as if he had seen through what Usma was thinking.

This old boy, in front of so many clansmen, said that he promised to take a holiday, now it's okay, after the carriage comes out, even if he wants to cheat, he can't rely on p.

At that moment, Ji Thief smiled at Usma: "Okay, Usma, you can do it." ”

Usma, who was seen through by the thief in his heart, smiled embarrassedly and said: "Then what kind of patriarch, don't blame me, I'm also on insurance, you often say, everything must be left behind." ”

The thief snorted twice, which made Usma's heart more and more uncertain.

"Then what kind of patriarch, I'll take the people to make the carriage first. ”

Ji Thief waved his hand and said, "Okay, okay, let's go." ”

Usma was relieved and relieved.

He hurried away.

It is not difficult to make a carriage, because it is not a high-end project in the first place, and in addition, the tribe has long been processed to make trebuchets of square wood, for the holiday, Usma also fights, and directly waved his hand to move these square logs that originally belonged to trebuchets to the board cart.

With wooden planks and square wood, it took only one day to make six carts.

In terms of wheels, Usma directly took a few smarter deputies in the department to study together with Ji Thief.

As for the production of the wheel, Ji Thief and Usma discussed it overnight yesterday, and they also had a way.

They first took a small piece of square wood, cut it to a thickness of ten centimeters, polished out 20 pieces of log of one size, and then, around the periphery of the log, connected to eight straight logs of the same length, one end of the straight wood was connected to the small logs in the inner circle, and the other end of the outer circle was connected to the circle that was divided into eight parts and spliced together.

After the whole wheel is made, it is the same as the wheels of those carriages seen in the TV series.

In order to ensure the load capacity of the wheels, Usma added a layer of integral logs on the periphery, and then reinforced it with copper nails and tenon joints, covered with a layer of copper skin. It took seven days to build twenty pairs of carriage wheels.

Next, the wheels are drilled, the load-bearing rod is inserted, and the finished disc is lifted on the pole, and there is a grease-coated wooden card, which happens to be stuck with a layer of copper on the surface, and the disc will not be separated from the stem if it is driven.

Not to mention that in order to ensure the firmness of the wheel and stem, Usma also deliberately lengthened the wooden truck a lot, even if it is a bumpy road, there will be no accidents.

The first carriage, no, to be precise, the board carriage was born, and for the sake of sounding, the thief still called it a carriage.

The carriage was parked in a tribal clearing, and at the front of the carriage there were two square logs sticking out of the front of the carriage, and there were twine-rope animal skins used to lassoe the horses.

All the people in charge formed a circle, including Tushan, who had returned from leading the team earlier, and pointed at the carriage.

The thief instructed Oga to bring over a war horse of the hussar department, and then put a rope made of hemp rope animal skin on the war horse, and sat on the wheel of the carriage with Usma, holding a newly made small leather whip in his hand, and gently whipped the horse's buttocks, and shouted loudly: "Deer frame~"

The horse was driven by pain and strode forward.

With it, the wheels of the carriage turned, making a creaking sound.

The people in charge around him let out a sound of surprise at the same time, and Ah Wei blinked and said, "In this way, it is a lot easier." ”

Oga was a little distressed: "It's just too wasteful, the war horses are all treasures." ”

The thief handed the whip to Usma to continue the display, then jumped down from the carriage and walked down with his hands clapped: "The horse-drawn cart is just a demonstration, and in the future, when we have trained the bison, we can use them to pull the cart." War horses, of course, can't just pull this kind of simple car. ”

"Oxen pull carts? But isn't this a horse-drawn carriage?"

Ji Thief was speechless: "It's just a title, it doesn't mean that it must only be pulled by horses when it's called a carriage? Moreover, this kind of cart was originally born to transport goods, and it is very suitable to use oxen to pull the cart." ”

The people in charge suddenly realized.

At this time, Usma, who was driving the carriage to show everyone, suddenly exclaimed.

Everyone looked up at the sound, only to see that one wheel was crushed against a stone, and no matter how hard the horse tried, the carriage only turned on one side, and on the other side, stuck behind a stone the size of three fists, and could not move forward.

The thief frowned and looked back, Usma twitched a few times, and the horse just pulled the cart around the stone to make a circle around the center point.

If you look at the stuck wheels, the whole wheel is stationary, even though the axles are turning, but it's completely useless.

Everyone went to see the thief and didn't understand what was going on.

Ji Thief also frowned, and said, "Usma, don't smoke it yet, come down." ”

Hearing this, Usma stopped his movements, hurriedly jumped out of the carriage and walked over, with a depressed face: "Patriarch, could it be that one horse is too small, why don't you change two horses." ”

Ah Liang joked to Usma: "No, Usma, maybe you are too heavy." ”

When the words fell, the person in charge couldn't help laughing.

Usma glanced at him: "Go, you are heavy, in our tribe, you are in better shape than me." ”

A circle of people looked at Usma expressionlessly, and when he saw the end, Usma was shy, coughed and asked Ji Thief: "Patriarch, is there something wrong between us?"

The thief walked over to look at the stuck wheels and nodded.

The crowd screamed.

Ji Thief pursed his lips and said: "When I was designing the drawings, I just thought about the wheel, but I didn't expect friction, and I miscalculated." ”

Everyone didn't understand what friction meant, so they looked at Ji Thief with a puzzled expression.

Ji Thief reached out and touched the polished round stem and the inner ring wheel with round holes, and said, "There is no friction here, how can it be possible." It's okay on flat ground, but if you take a slightly rough road, I'm afraid it won't work at all. ”

Hazel blinked: "Well, why don't you make a hole of some other shape?" like the triangle you said when we built the house." ”

After Hazel's words were spoken, everyone looked back at her.

For a while, Hazel was a little shy: "Well, I felt that there was something wrong when I looked at the design drawings before, but I didn't figure out what the problem was for a while." ”

Ji Thief clapped his hands and stood up: "It's okay, Sister Hazel, you're right, replace the drill hole and load-bearing shaft with a triangular one." Usma. ”

Usma hurriedly agreed.

Ji thief said: "According to what Sister Hazel said, it is modified." Now it's just a pair of wheels, except for the problem, if you modify it, it should be very simple, and it should be completed in three days. ”

Usma nodded: "Okay, Patriarch, I'll do it." ”

Ji Thief nodded, and while letting Usma go, he thanked Hazel in a thousand ways.

In front of so many people, Hazel blushed.

It stands to reason that Hazel was also a witch of the Frost Valley tribe in the past, and it was really one person above ten thousand people, and it was impossible for her to be cramped and uneasy because of a few words of thanks.

However, you must know that the person who said these words of thanks was none other than the thief who haunted Hazel's soul.

If you change Usma to come and say these words, you can see that Hazel blushes or not, and it's over.

Hazel was shy, and the thief touched his nose and muttered, "Damn, I miscalculated this time, and I made a big fool." ”

Hazel was secretly happy, and said that as long as she could help the warriors.

In fact, she knew that even if he didn't say it, Ji Thief would be able to come up with a solution.

After all, physics is not learned in vain, and it can only be said that Hazel's idea hit Ji Thief's idea one step ahead.