The leaders of all aspects of the tribe together made this transmission device, so that Wang Tian felt extremely happy, sure enough, the working people are the biggest creators and promoters of the productive forces, in the long run, after a period of accumulation, there will really be nothing to do with Wang Tian.

But so he is happy, strive to retire before he is an adult, to achieve economic and time freedom, is the dream of many people in later generations, and now he can be regarded as having a house and a car, and the value of the lightning horse BMW is not comparable to a Leslaus.

However, the way this frisbee is used seems to be wrong, there is no difference between forward and reverse rotation at all, and the gears driven by the chain are installed with two bearings without direction?

The plane of the workbench is powered by the rotation of the outer ring of the bearing, and it is not necessary to manually pull it to rotate? That is, the precision of this bearing is too poor, otherwise the hinge will be rotated, and the worktable will not move at all.

The revolution has not yet succeeded, but everyone's positive and innovative spirit is worth advocating and commendating.

Kuroko and Zeu looked puzzled, they didn't understand what the Son of Heaven meant, they made it according to the structure that the Son of Heaven said, why did they say it was useless now?

Wang Tian naturally understood that the two of them were drilling the tip of the horns, and patiently explained:

"The bearings of this frisbee are actually needed...... In this way, it can be continuously rotated by the drive of the hinge! ”

"Still don't get it?" Wang Tian saw that the two of them were still puzzled, and he didn't explain anymore, lowered his head and picked up the big tiger and the little tiger playing at his feet, put them on the turntable as a weight, and asked Zhou to turn the hinge.

At this time, no matter how fast the Frisbee rotated, the frisbee only drove the inner ring of the bearing to rotate, and the two little tigers lay on the table without even half of their bodies turning.

Kuroko and Zeu looked embarrassed, the praise of the Son of Heaven just now made them really excited, but they didn't expect that this was the ...... situation now.

"This chain is very good, but there is no need to use it on the working turntable of pottery, only a group of large and small gears need to be driven by each other, so that the operation will be more labor-saving, and the structure will be stronger!"

These two large bearings can be retained, but they can only be used as a device to fix the rotating shaft, so that the frisbee can rotate at high speed by turning the pinion disc on the rotating rod through gears of various sizes. ”

With the reference of the real thing, Wang Tian's next explanation made Kuroko and Zhou nod frequently, looking at their serious expressions, Wang Tian felt that it would not be long before it would be a big problem to make a car's differential.

……

"Kuroko, you can get it again when you have time, the mold of the armor scales must be tightened, and the observation of the winter solstice must also be grasped, the record and date of the data must be correct, the weather cannot always be so good, it is very likely that the winter solstice day needs to be inferred with the recorded data in the end!"

The two nodded, then went their separate ways, once more

After seeing the rich knowledge of the Son of Heaven, everyone was even more convinced.

Wang Tian said to Liu Bei again: "These two bearings are very good for sitting on the axle, but I am worried that the strength of the material is not enough, you will test it a few more times when you have time in the future, and find a big hand to solve any problems." ”

"In order to reduce the weight of the cart itself, a full set of bronze tools is now available, and it is possible to try to make hollow wheels.

The "rim" can be bent in one piece using hard and flexible wood, and the rim and hub are connected by spokes, which can also reduce the amplitude of bumps.

Wang Tian was drawing sketches on the paper, while explaining to Liu Bei the precautions for this kind of wheel composed of rims, hubs, and spokes, and the big hand also listened carefully on the side, some parts need to be made of metal, Wang Tian also carefully told him the requirements of these workpieces.

"Now there are no bronze materials in the tribe, this will be done later, you first make the sleigh cart and the plow, which are used to pull heavy objects, so you must make it stronger, with these vehicles, it will be more convenient to transport ore in winter than by water."

There are two kinds of sleds, one is fully enclosed with a roof, this is specially used to sit people, people sitting in it will not feel cold, Wang Tian plans to do a good job, take two girls to a ride with the United States.

Another type of plough is an open-top truck, which is convenient for pulling goods, and perhaps it can be improved into a structure that is convenient for installing a wheel, so that it can be used for two purposes.

But with or without improvements, the three sleds can only travel in a few places, such as rivers, and if you want to get to the grasslands, the only option left is to ride horses or snowboards, because there is no "road" for such a wide body.

"Oh yes, big hands, you make a few square billet pouring molds, we have to load the copper and tin ore after the preliminary training and bring it back, the shape of the molds before is too casual, it is not convenient to load."

After Wang Tian explained clearly, he called the two tiger cubs to leave the ancestral hall, he picked up one, and the other fart followed, the two tiger cubs have reached the time of weaning, and the recent amount of food is amazing.

Every time they have to eat more than 10 kilograms of meat, Wang Tian has already felt the pressure of feeding, and they only eat meat and do not eat fish, which makes Wu especially distressed, because the tribe does not eat much meat, and it is relatively easy to obtain fish meat, in order to solve this problem, Wang Tian has been training them in hunting skills, and at the same time intends to change their eating habits.

Wang Tian remembered the record in a historical notebook of the Qing Dynasty, "Qing Barnyard Banknotes", saying that Guizhou is mountainous and there are many tigers, and it is estimated that all of them are South China tigers.

"There are many mountains in Qian, and there are tiger traces between the mountains and valleys." Of course, such a precious animal resource cannot be wasted, so the local mountain people have the creative idea of training this mountain king to be an animal for ploughing the fields. ("The Battle of the Cattle on Their Behalf")

The first step in turning a tiger into a plough cow is to start changing its diet, with mountain people putting cooked grain in cages and mixing it with a little grain

A little meat, this is similar to the food prepared by the Tenryu tribe for the five god Inu Taro.

With the five god dog Taro as an example, Wang Tian originally thought that he could get the two tiger cubs used to such food, but he didn't expect that the two tiger cubs would not accept it at all.

Tigers are at the top of the food chain, of course, they don't disdain this kind of plant food, naturally they won't eat it, Wang Tian also felt that it was too cruel to deprive them of the right to eat meat, so he didn't deliberately starve them for a few days like the mountain people in Guizhou did with tigers, and then forcibly change their eating habits.

As for the more brutal methods: knocking out their sharp teeth with a hammer, cutting off their claws with large scissors, so that they no longer have offensive equipment, ("making them flat like ox's hooves"), Wang Tian could not do it.

Originally, I adopted them because I got them too suddenly, and I couldn't throw them away ruthlessly, so I raised them step by step.

But their food is too large, according to later scientific statistics, the number of tigers to eat meat at a time is about 30 kilograms, two adult tigers get 60 kilograms of meat a day, although Wang Tian has mines, but also said that they can't afford to raise.

Although tigers can starve for half a month to a month without eating after eating and eating at one time, Wang Tian is reluctant to let them be hungry after all.

So the two tiger cubs are still eating human milk, and then accompanied by meat, which is all living creatures caught by traps in the tribe, and Wang Tian uses to train the two tiger cubs in their own hunting skills.

He hopes that in the future, the big tiger and the little tiger can learn how to obtain food by themselves, and after they have survival skills, they can go and stay as they want, so that the tribe will not have such a big burden, if they are willing to stay in the tribe, they will be used as door gods, and they can also scare a group of small people to death.

After spring ploughing next year, Wang Tian plans to set up a trade team, which will travel through the wild for a long time, and with their escort, it will undoubtedly become much safer.

The only thing worth worrying about is that they are afraid that they will talk to the people and animals of the tribe, after all, even the cute giant panda will have hurtful news from time to time in the future generations, and for the top king of the tiger, although Wang Tian can communicate with them, he still can't be very relieved.

According to the record in the "Qing Barnyard Banknotes", the key step in order to ensure that the tiger and the domestic animal are safe is to train it to understand human will.

This step of training has been completed, and the two tiger cubs are now much more docile than kittens to the people of the tribe.

But in order to be truly reassured, Wang Tian felt that he still had to be like the teenager in "Life of Pi", inserting a piece of fish meat with the tip of a long rod, and repeatedly training the tiger to get used to eating fish.

As long as they can eat fish, these other worries can no longer exist, and as for the successful taming of tigers to cultivate the land in "The Barnyard Money", it is completely unnecessary in the Celestial Dragon Tribe.

The joyful scene described in the book after the successful taming of the tiger is: "At the end of the day, the cattle and sheep came down, and the ploughing and tigers were mixed in it. "You can still get out

Now the Tianlong tribe does not need them to plow the fields.

Because the Tianlong tribe already has a better, more humane solution _ ploughing cattle, "Yu Yu Kaixing" can have it, but Wang Tian does not want to change the laws of nature.

Wang Tian thought about the arrangements for the two tiger cubs as he walked, and then he planned to discuss with Wu about going to the River Tribe, and strive for Wu to agree to him this time, but at this moment, there was a warning drum from the city wall.

This made Wang Tian somewhat surprised, but there was no panic in the tribe, and it would operate in an orderly manner according to the procedures of the previous drill, and the gate of the tribe had been closed, but the drawbridge had not been pulled......

(End of chapter)

ABC