When changing the mast, Zhu Mingxin, who was supposed to be the leader, instead became the assistant of Zhan Wuya and Wang Luobin, helping them to help, but fortunately, with Huangshi to provide ideas, they first made a few pulley sets, so it was not very difficult to transform the existing two masts, and it took two days for the two masts to be transformed.

When they had erected their masts, and were about to hang the sails on which the women had sewn, they saw the chief bring out a dozen bundles of colorful ropes.

"Chief, what is this?"

"This is the sail rope of the upper realm, you replace the original hemp rope with it."

The sail rope taken out by Huangshi is made of ultra-high molecular weight polyethylene with a diameter of 24 mm, that is, Kevlar, and also adopts the weaving method of 32 strands, according to the sales staff, that is, it has the advantages of low elongation, anti-wear, corrosion resistance, no joints for 10,000 meters, not easy to break the twist, soft and smooth, and easy to operate.

Then they saw that the chief took out some bits and pieces of spare parts, which were bright and shiny, and at first glance they were metal products.

"Chief, what is this?"

"This is a shackle, this is a soft shackle, this is a chicken heart ring, you should have seen these plastic sleeves before." Huang Shi pointed to this pile of accessories and said, Originally, these spare parts were to be matched according to the needs of customers, but Huang Shi didn't count how much he needed, so he bought dozens of each.

Huang Shi picked out a few chicken heart rings from this accessory, and then beckoned Wang Luobin and them to come over, and said, "Come and take a look, and I'll teach you how to tie a sail rope." ”

Wang Luobin and Zhan Wuya had just seen these things, and they were guessing what they were for, but now when they heard the chief calling them, they gathered around to see how the chief was engaged in "sail rope winding".

Rope winding is a method often used by merchant fleets or navies after the middle of the 19th century, usually on thicker but not long ropes. It is characterized by its sturdiness and simplicity that binds the rope and can be quickly untied if necessary. When storing, it can be hung up in addition to lying flat.

"You see, first fold the rope in half and make a loop, and leave the U-shaped end at the fold."

Huang Shi made the rope into what he had just said, pinched it and re-demonstrated it to the people around him, and after seeing that they all understood, he continued to say as he did it, "Now you go around this U-shaped end into the rope loop and thread a knot." ”

He repeated it twice, and when everyone understood, he tied a knot around the U-shaped end of the rope loop, and then tightened it, "You see, this rope wrap is completely knotted. ”

"Chief, what's the use of this rope wrap?" Wang Luobin scratched his head, the chief had understood the operation just now, but it was not clear what this thing was for.

"Lobin, this rope wrap is very useful." Huang Shi lifted the cord around and showed it to everyone.

Then he said, "Pull it yourself, and see if it's strong?" ”

After saying that, Huang Shi handed them the sail rope and asked them to try it one by one.

"Chief, this one is indeed very tightly tied." Everyone nodded after trying it, and they also knew its function, such a simple tying method is indeed very practical on the ship, especially when it comes to emergency sail lifting.

Huang Shi took the rope loop back, and then somehow got it with both hands, it seemed that with a slight flick, the sail rope loop was immediately released.

Looking at the surprised eyes of everyone next to him, he laughed twice, "Look, it's quick to untie them!" ”

"Chief, how did you do that?" Everyone wondered if the chief had cast some spell, but it was clear that each of them had tried it just now, and no matter how they pulled it, it was very strong, so why did the chief seem to let go without making any moves.

"Hehe, in fact, the trick is very simple, I'll teach you ......"

Teaching them how to tie the sail rope was just a small episode in the events of the day, and after that, Huang Shi looked at Wang Luobin and they wanted to hang the main sail.

This time, the shape of the mainsail is trapezoidal, so the struts of each stick from top to bottom, from short to long, in the outermost end of each strut, there is a sail hole, and the sail rope is passed through them, so that the sail surface can be firmly tied to the sail truss to form a wind arch.

Obviously, although Wang Luobin and Zhan Wuya were carpenters on the sea ship at the beginning, they were only able to tinker with the sea ship, in fact, the skill level of the carpenter was not as high as Zhu Mingxin, and they had not changed the sail of the sea ship.

In the end, Huang Shi and Chen Youxin recalled the scene of the original hard sail, which finally hung up the new sail.

……

After hanging the sails, in front of Huangshi, Wang Luobin and Zhan Wuya spoke a little hesitantly, and their faces were a little impressive, after all, they were "professionals" who had been praised by the chief before, but it was up to the chief himself to solve the problem, which made them all a little embarrassed and were about to make an explanation.

"It doesn't matter, it's the first time we've done these things, so take some time and gain some experience. We're going to remodel this winch now. Yellowstone beckoned, and they followed him to the stern.

Standing next to the big wooden wheel in the stern, Huang Shi took out a few large shiny steel rings.

"It's a vital component in all of our machinery and equipment. It is a bearing, which is used to fix and reduce the friction coefficient of the load in the process of mechanical transmission. ”

The chief's words were still like that, and he couldn't understand most of the content, but Wang Luobin looked at the thing in his hand that was bigger than a palm, and still knew that it was called "bearing".

It's just that he found that the bearing he was holding was still not the same as the one in their hands, and his bearing was two steel rings with more than a dozen small steel balls, each of which was of average size, shining like a pearl.

When Wang Luobin just got the bearing in his hand, he smelled a strange smell, and then looked at the surface of more than a dozen steel balls in the bearing, and there was some oil on the surface, and he dipped it with his fingers, and found that it was a little sticky, and the color was also a little bright yellow.

"These bearings do a lot, you see." Huang Shi picked up the bearing in his hand, pinched the inner ring, and fiddled with the outer ring with his other hand, and heard a "hiss" sound.

When everyone saw that the outer circle seemed to be going on endlessly, and it wouldn't stop at all, they all thought to themselves, what a magical thing.

After a long while, the outer ring of the bearing slowly stopped, and Huang Shi looked at them a little dumbfounded, and said, "Mingxin, Luo Bin, you say, where should this bearing be used?" ”

Zhu Mingxin is the one in their group who is curious about techniques, so as soon as he got the bearing in his hands just now, he started to study it himself. And Wang Luobin is the more courageous person in their group, and he will ask the chief directly if he has any questions, and he will not dodge like others.

"Chief, isn't this just for the middle of this wheel?" Sure enough, Huang Shi was not disappointed, and his words fell, and Zhu Mingxin and Wang Luobin answered in unison.

Huang Shi nodded, "That's right, these bearings are to be put here to use, you think about it, if you install it like this, you won't need 7 people for this winch wheel in the future, as long as there are 3 people, you can completely raise and lower the sail." ”

After they removed the hard sail and hung it with Oxford cloth sails, and then used lightweight carbon fiber struts, the weight of this sail was at least nearly half, but Yellowstone made the mast more than twice as long, and the area of the sail was nearly doubled, so the weight was not much lighter.

Everyone thought about it, and with the smoothness of this bearing, this should be installed, and it can indeed have the effect that the chief just mentioned, so they all nodded in agreement.

But at this time, Wang Luobin asked, "Chief, these bearings are different. ”

"In the upper boundary, there are many types of bearings, about a dozen, such as radial bearings, thrust bearings, liquid-lubricated bearings, incomplete liquid-lubricated bearings, and non-lubricated bearings. Self-aligning ball bearings, self-aligning roller bearings, tapered roller bearings, double row deep groove ball bearings, thrust ball bearings, deep groove ball bearings, angular contact ball bearings, cylindrical roller bearings, needle roller bearings. Yellowstone replied.

"So much!" Everyone was dumbfounded.

Huang Shi smiled slightly and said, "Of course, you see, this bearing in Luo Bin's hand is called a self-aligning ball bearing. And the one in Wuya's hand is the needle roller bearing......"

Fortunately, he has a good memory now, and he wrote down the introduction of the shopkeeper one by one, and bought several of each bearing, so he pointed out every bearing in everyone's hands.

"Chief, what's the difference between these bearings?" It was Guo Mingxin who asked this, and he saw that some bearings were no different from the outside, but the chief said different names when introducing them.

"First of all, this bearing is divided into two categories: rolling bearings and plain bearings." Although they may not be able to understand the principle, they can explain it to them now so that they can have an intuitive and perceptual understanding.

So he handed over the bearing in his hand to the person next to him, and took out a notebook and pen from his body, wrote and drew on the paper, and everyone watched him draw one bearing pattern after another on it with bated breath, and it took a long time for Huang Shi to finish drawing the principle of those bearings that he knew.

"You see, the picture on this paper is the rolling ball bearing in Lobin's hand, which is a kind of rolling bearing. This kind of rolling bearing is generally composed of an outer ring, an inner ring, a rolling element and a cage. ”

"The rolling body, it's these balls......" Huang Shi pointed to the picture in his notebook and explained to everyone, as for the outer circle and the inner circle, which are obvious to everyone, naturally there is no need to mention it.