Summoning people and horses to enter the hydraulic factory, compared to Galileo's confusion, the carriage carpenter who was casually called understood Duke's intentions at the first time.

Although Galileo is a pioneer of science and the founder of modern experimental science, he is really looking for the wrong person in terms of building carriages, and he has called the carpenter over to save a lot of trouble.

There is no problem with the copper whiskers in terms of steel bars, because the weapons of Storm Fort are all made of spring steel, which is nothing more than a different shape. There is no problem with the periphery of the bearings, and Stormcastle now has dwarven blacksmiths, even if it is handcrafted, the output is enough.

The problem still appears on the balls of the bearing, because the number of balls and the smoothness of the surface directly affect the friction and service life of the bearing. It can be said that how much this improved carriage can carry and the failure rate of its service life are all on this small thing, so you must make sure that this thing is round enough and the surface is smooth enough!

In order to increase efficiency, Duke divided this step into two steps, while asking Galileo and Bruru to stop what they were doing and focus on the construction of the hydraulic grinder. In fact, this is not very difficult, just on the basis of the existing grinding machine, let the grinding disc rotate at high speed under the hydraulic drive.

On the other hand, Duke personally made the rough embryo of the steel ball with the copper whiskers, which is a modern method of pouring the molten steel into an inert gas cylinder, and then rotating at high speed to bring out a ball with centrifugal force.

This production method is too high-end, and the current level of science and technology does not need to be thought about, so Duke can only use the most basic method, that is, to divide the molten iron into small sections, and put it into a ready-made semi-circular mold before it has cooled down, and then buckle another semi-circular mold to pressurize it to obtain a prototype of a sphere. Then, through the method of manual hammer forging modification, the spherical embryo is finally obtained.

To be honest, this method is very similar to rolling dough, the difference is that after the dough is stretched into long strips and cut, it can be kneaded into a basic ball by hand, and this can only be done with a spherical mold and artificial modification to obtain the most basic ball embryo.

Although this method is not advanced, and even a little simple and crude, it is better than having no high-tech difficulty, and at the current level of Storm Castle, it can easily forge a ball embryo. Then the spherical embryo is quenched and hotly treated, and then put into the coarse mill and fine mill to grind separately, and finally manually polish to obtain small steel balls.

When Duke took the first smooth and translucent steel ball in his hand, he almost couldn't hold back his tears. Because Duke didn't look like that, but he really had to get everything done from scratch, Duke and Copperbeard spent almost a week in the hydroelectric factory, enduring the heat of molten steel.

After the steel ball is successfully made, the peripheral parts are relatively much simpler, and it is still not a big problem for the dwarven craftsmen to create this.

Duke took the first ball bearing in his hand and gently flicked it to watch it spin, and even felt like he had traveled back in time. Because the things developed by Duke before, no matter how you look at it, are different from modern technology, even if it is a telescope, this era is a copper shell, and modern ordinary telescopes are mainly plastic.

But ball bearings are different, they are exactly the same thing as modern bearings, both in terms of function and shape, they are the kind of industrial products that Duke has seen. It can be said that Duke has been in this world for more than half a year, and he has finally seen the industrial products that are exactly the same as those of later generations!

Seeing the ball bearing in Duke's hand rotate with the plucking, all the craftsmen involved in the research and development were excited, especially the carpenter Ryle, he understood the function of the thing in Duke's hand at first glance, this rolling speed, far more than the bearings used on the carriage now, if this is installed on the carriage, you can imagine what amazing changes will occur.

This speed of rotation was revolutionary for the world, but Duke soon felt a kind of jerkiness, which was the problem caused by the lack of bearing accuracy. But even so, it is much stronger than the world's bronze or wooden axles, and even if copper has a self-lubricating effect, it is far less than ball bearings.

With ball bearings, Duke immediately asked Ryle, a carpenter, to find an existing carriage to renovate, and at the same time applied leaf springs made of steel plates. Compared with the more than a week of developing ball bearings, the transformation of the carriage took only two days to complete.

Looking at the new carriage with ball bearings and leaf spring shocks, Duke couldn't wait to shout to the copperbeard beside him: "Copperbeard, load all the steel ingots into the carriage and test the load capacity of the new carriage." ”

"Yes, my lord!"

Copperbeard replied excitedly, and then called out to the dwarven blacksmith to pile the steel ingots placed aside on the wagon.

These are steel ingots smelted from iron ore, and each one weighs about 100 kilograms. And these dwarven blacksmiths, almost every one of them easily picked up a steel ingot, showing their strength far beyond that of humans.

Seeing this scene, a sentence suddenly popped up in Duke's mind, that is, the heavens are all fair, although they took away the magic talent of the dwarves, but gave them extraordinary strength to compensate.

One, two, three...... As the number began to increase, everyone's face showed a kind of ecstasy, you must know that the four-wheeled carriage of this era, the limit is eight hundred kilograms, and this carriage has fifteen steel ingots, that is, the weight of one and a half tons.

Even in the seventeenth and eighteenth centuries of the Napoleonic era, the carrying weight of the French military four-wheeled carriage was this number, and Duque has now reached it.

However, carrying such a large weight is not a success, because standing still is not at all an order of magnitude different from the pressure of walking on a mountain road. Whether the leaf spring can withstand the bumps of the mountain road, and whether the ball bearing can withstand the heavy pressure without breaking and damage, are all important indicators.

"Ryle, drive the carriage around. ”

Hearing Duke's order, Ryle didn't care about his own safety and jumped directly into the carriage. Because he still understands the principle of ball bearings, but he can't understand how these curved steel plates of different lengths can be connected to play a shock-absorbing role, and he wants to experience for himself if there is as magical as the lord said.

As Ryle drove the new carriage, it slowly began to move, and unlike the previous carriage, which creaked and rubbed with its load, this new carriage was noticeably quieter. After walking a few steps, the expression of surprise on Ryle's face became more and more obvious, because he sat in the carriage, and did not feel the previous bumps, but was very smooth, which meant that the lord's leaf spring shock absorption was very effective, this was a completely different from the previous new carriage!