After Wang Tian made up his mind to go to the River Tribe to collect ore, the "order" to make three sleigh cars naturally appeared in the hands of carpenter Liu Bei.

The words given by the Son of Heaven were straightforward: referring to the style and structure of the ox cart, the two wheels were replaced with the style of skis, and the corresponding outline drawings were also given to Liu Bei.

For this kind of sleigh cart that does not even have a rotating part, it is naturally difficult for Liu Bei, a carpenter who already has some qualifications, and the ox cart with a wheel has been modified and perfected several times after the metal bronze is obtained.

In fact, before Liu Bei received this order, he was making one last improvement to the ox cart - making two brand new wheels.

The original two wheels are just made of natural logs, which are directly installed after a little trimming and rounding, and the shape is not a standard circle, and the center of the two wheels is not on a horizontal line, so it is inevitable that the ox cart will be bumpy in the process of moving.

Originally, this ox cart was just a temporary vehicle made by Wang Tian to pull quicklime, but after the continuous improvement of Liu Bei and Dashou, it has now been gradually improved.

Now Liu Bei plans to make two rounder wheels and install the bearings as rotating parts, and these two copper bearings are naturally provided by the blacksmith.

And the reason why Dashou has this thing is because Kuroko wants to make a more flexible pottery rotating table, and Wang Tian mentioned the concept of this bearing to Kuroko when he first made a rotating table.

Now that there are metal materials in the tribe, Kuroko naturally wants to upgrade his equipment, so the bearing was born, and it is no longer possible to make pottery after winter, and Kuroko is studying how to make balls that meet the requirements as soon as he has time.

Wang Tian turned the bearing in his hand, the jerky feeling was still obvious, and the time from rotation to stop was less than half a minute, and the beating was still obvious, but under the existing conditions, it was really made for the sunspot, which had to surprise him.

But what can be done with a workpiece made of bronze? How long can it be used? Can the material support the use strength? How much damage was done to the balls during installation?

Don't spend a lot of effort to install it, it will fall apart after walking a few kilometers, and it may be reluctant to use it to make a wheel, can it really be used as a rotating part of the pottery workbench?

Now the idling is only supported for 30 seconds, and this result is not as good as the old turning table before, does the sunspot want to use his hands to keep pulling? It would be completely pointless if it does not provide a constant and lasting force.

Just when Wang Tian was puzzled, Kuroko and Zhou came to the ancestral hall with something in their hands and placed it in front of Wang Tian.

After the arrival of the wild horses, the original pavilion had been completely turned into a cattle pen, and the canteen, weaving, and carpentry work were all transferred to the ancestral hall.

And the blacksmith's place of work has been moved to a corner of the original tribal cave, no wonder Kuroko has been running into the cave recently, and it turned out that Dashou was trying to build this thing in his hand.

Looking at what Kuroko had brought

Wang Tian was shocked again, because this thing resembled the main accessory of a bicycle.

A crankset gear is fixed to a wooden box, and a flywheel cast with a copper rod is driven by a metal bar like a bicycle chain, Wang Tian shakes the rotating rod similar to a bicycle pedal, and the metal chain drives the flywheel to rotate like a bicycle.

At the upper and lower ends of the copper rod, a bearing is installed on each side, and the chain only needs to keep turning the pedal lever to drive the flywheel to continue to run.

Seeing this device, Wang Tiancai understood that his worries just now were unnecessary, except for the need for a person to keep rotating this device, continuous and uniform rotation was no longer a problem.

Such a complex transmission device was actually brought out by them, Wang Tianjing's jaw was about to drop, did he travel through the primitive era? These mechanical transmissions had already given Wang Tian the illusion.

"You did this? That's amazing! The small bearings on this flywheel are all there, amazing! ”

Wang Tian looked at the bearing that was only the diameter of three fingers, and the chain like a bicycle hinge, and did not hesitate to praise him, and said to the sunspot with emotion.

"The appearance of the turntable is what I thought, it is based on the hand-pulled blower you got from the Son of Heaven, these bronze parts were drawn for me, the bearings were made by big hands, and the box with fixed parts was made by Liu Bei......"

Heizi was a little embarrassed in the face of the praise of the Son of Heaven, but his few words made Wang Tian understand that the workpiece in front of him was a part of the cattle on the scene.

Looking at the pile of copper in front of him, it is no wonder that the bronze materials of the tribe are consumed so quickly, it turns out that these guys are not idle, they are all working hard, and they also know that it is already good to set aside the bronze materials used to make tools and weapons.

Of course, Wang Tian would not say words that would discourage their enthusiasm, Nima is a genius, and everyone is a treasure.

"Zhou, how did you come up with this gear shape, and how did you install these balls on the two rings on the bearings, and how did Liu Bei assemble these things in the slightest?"

Wang Tian's heart was amazed, this somewhat rudimentary device in front of him, if it was placed in the future life, Wang Tian would even think it was ugly, but he appeared in this primitive era, and it was completed by this group of primitive people, which could not help but make him full of curiosity and questions.

"These are all taught by the Son of Heaven!" The neat answers of several people made him even more confused.

"When did I teach you this? Why can't I remember it myself? ”

Wang Tian is full of question marks, these guys are going against the sky, according to this situation, he can retire after a while, such things can be made, it is difficult for him not to retire, obviously his job has been robbed.

"The role of these gears, the Son of Heaven, you told me before, you forgot?" Zeus said.

Big Hands continued: "The mounting of the bearing balls is in these fittings are also

It's knocked directly into it when it's red, and when it cools, they can't fall out, didn't you teach me how to expand and shrink hot? ”

"The installation and fixation of these workpieces, the most difficult thing is vertical installation, didn't you let me make a right-angle triangle plate, Son of God? I just need to dress up, I don't need to use any brains at all! ”

Liu Bei also had a strange expression on his face.

"The Son of Heaven must have amnesia!"

Several people thought of a piece at the same time......

(End of chapter)

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