When the moon rose, Modo reluctantly left from the assembly room, this afternoon's insight really opened his eyes, the principle of the fuel engine, actually and the machine that he once made to rely on boiling water to generate power, are dependent on fuel combustion to produce expansion gas, but the difference is that the fuel engine is more convenient to control the amount of fuel, and in terms of heat dissipation and safety performance, it is also more advanced.

What Modo particularly admires is that the water-cooled pipes designed by Rand on the fuel body and the fins called the water pump wheels, which rely on multiple ligaments to drive the circulation, have indeed created a precedent for water-cooled machinery.

"My lord, can I come over tomorrow?" Mordo's voice came out from behind him, and it was clear that he was very interested in the dismantled fuel engine in the assembly room.

It was a faulty fuel engine, which was originally working in the mining area, but in the process of using it, the driver suddenly had a lack of power, the machine shook violently, and even the speed of the drill bit was greatly reduced.

Randt speculated that the cause of the failure was likely due to pressure relief inside the cylinder barrel, or perhaps the misalignment and deformation of the piston rings used to seal the cylinder barrel.

Just a few hours earlier, under Rand's guidance, Modo had dismantled the engine with his own hands.

From the position of the bolts to the positioning pins, and some things that need to be noticed, Rand told him no less than twice, and he was worried that it might take longer for Modo to come into contact with such a complex machine for the first time, but he didn't expect the maintenance work to go surprisingly smoothly.

After poking the piston out of the cylinder barrel with an iron rod, Rand inspected it and found that the sealing ring outside the piston wall in the third cylinder barrel had broken in two.

"Of course, if you want, the repair of this fuel engine is yours, and it is not too difficult to replace the sealing ring. Rand shrugged his shoulders and turned to look at Modo, "I'll guide you on the side." ”

"Thank you!" Modo nodded, the construction of this fuel engine was not as cumbersome and complicated as he thought, but some of the design was very exquisite.

As a renowned craftsman with decades of experience, Modo has already imprinted its structure in his mind when he disassembles the fuel engine.

Gears, camshafts, alignment pins, injectors......

There were many things he had never heard of before, and he couldn't help but look up at Rand.

Where did he get this knowledge......

......

Ranirus sat in the cabin and made his way up the Serra River, he lifted the curtain and looked at the shore, which was not far from the family's domain.

Just pass through the Blue Light City and drive less than 200 kilometers to see the marina of the Peruvian family.

Thinking of the harvest of this voyage, Lanilus couldn't help but feel a little excited.

After the rand blockaded the shallow waters, the Peruvian family suddenly had a lot fewer competitors in the northern market, and even the merchant ships of the Black Star family, which used to occupy the largest percentage of the market, failed to reach the north this year.

Lacking a large number of suppliers, the demand for luxury goods in the northern market instantly increased a lot, and the goods carried by Ranilus were sold out almost in a few days, and he even quietly increased the price, but those nobles who had the financial resources to buy luxury goods did not care about the slightest difference in price, they only worried that those cherished jewelry and playthings would be snatched away by others.

Lanilus had never felt that his goods were so popular, perhaps because he realized that there were some problems with those merchants, and the shops they had previously cooperated with had also switched to Peruvian families, and many local traders had found Lanilus, hoping to pick up the goods from Peruvian families to prevent a break in their sales chain.

The voyage was undoubtedly a lucrative one, and he smiled as he looked at the crates full of silver coins in the corners of the cabin.

Working with Rand was the best decision he's ever made.

You only need to pay more than 100,000 silver coins every year, plus some preferential treatments on goods, but you can get the qualification to dominate the northern market.

After I go back this time, I must let others see how much benefit my decision has brought to the family!

In just a few days, you can earn twice as many coins as before.

If this continues, the Peruvian family will soon be able to become the leading merchant family in the south, and can even buy the business of those small families, completely monopolizing the jewelry market in the north.

Lanilus smiled, no matter what kind of business he is, only a complete monopoly on it is the way to maximize profits.

If a pearl is sold by several companies at the same time, then its price is fixed, and if you are the only one who sells it, then its price is not high if you say it is high, and if you say it is low, it is low?

In a good mood, Ranilus picked up the bottle of red wine next to him, which he had purchased at a high price from the merchants of the Northlands, and had heard that it tasted very good.

"Pani," Ranilus called out of the cabin, and then a servant entered, shaking his glass, and commanded, "pack up the remaining bottles of red wine and keep them, and send them to the airferry for the next voyage." ”

"Yes. ”

Feeling the cold and mellow smell from between his mouths, Lanilus stretched in contentment, it was a lot of effort to chill red wine in this season, but he felt that he was entitled to enjoy the beauty of life at this time.

"Saltpeter ......" Lanilus suddenly turned his attention to the ice cubes in the wine basket, these ice cubes are made of saltpeter, but the usefulness of saltpeter may not be limited to this, considering that Rand had purchased saltpeter in large quantities for his own use, Lanilus guessed that this thing could probably be used for industrial manufacturing.

"Anyway, this thing is cheap, so it's better to give it to the empty ferry to receive some favors. Ranirus touched his chin, his family has a saltpeter mine in the south, and most of the ore mined is used to make iced food or to cool off the heat, and the profit generated is not large, but since Rand needs this kind of thing, it is better to sell his family's saltpeter to him at a low price, or give it to him directly.

I have to say that Lanilus is indeed a great partner.

Lanelous understands the importance of cooperation, and that a partnership can only last if both parties benefit from it, and if either party feels that their efforts are not proportional to their gains, then the relationship will end.

Lanilus didn't want to see that happen.

So from the beginning of buying war horses and selling them to the rand at a low price, to now planning to dig saltpeter from their own mines and then give it to the rand, all of this is for the continuation of this cooperation.