"Dear students, because this track is special, each of you has one hour to modify your own racing car. Take your time and modify a four-wheel drive car that can drive perfectly underwater!" Four-wheel drive!

The fighter shouted, which made all the players breathe a sigh of relief.

It's okay to give them an hour this time, so they can think carefully about how to deal with this harsh track.

First of all, special waterproof tires are necessary, because only waterproof tires can drive stably in the water.

But this is not the most critical issue. The most critical issue is how to protect the four-wheel drive vehicle from electric leakage.

Since the four-wheel drive vehicle has rushed into the water, water intrusion is inevitable. Once water enters, it will have a fatal impact on the motor and battery. Maybe within a few seconds, the four-wheel drive vehicle that has entered the water will be completely useless.

Already.

"What should we do?" All the players were lost in thought.

The contestants who bought the Silverbait engine had bright smiles on their faces, because the Silverbait engine is a special engine specially manufactured for underwater driving and has a very strong waterproof effect. According to the engine manual, the Silverbait engine

The engine can keep running in the water for more than an hour.

As a result, the players who prepared the Silverbait Engine smiled brightly, while those who were not prepared looked ashen.

Of course, just having an engine is not enough. The battery also needs to be waterproof, and the current must not be affected by water.

"I don't know if there are many impurities in this water. If there are too many impurities, it will be troublesome!" Water itself is not a conductor, but if the water contains impurities, that would be terrible!

Looking at the pool in front of him, Liu Nian fell into deep thought. The conductivity of water is determined by the amount of impurities in the water. If there are many impurities in the water, such as sewage, the four-wheel drive vehicle will easily have a short circuit.

Problem.

In fact, Jia Yapeng is not so perverted as to compete with sewage. This is pure water that Jia Yapeng specially obtained. Although it has not reached the level of pure water for experiments, there are not many impurities in it. At most, it has a little

It's just a weak conductivity. The low current of a four-wheel drive vehicle won't have a big impact.

This underwater track actually looks scary, but it's not really that scary. Even an unmodified four-wheel drive can run underwater for a while, but it would be great if the motor and battery can be waterproofed.

But.

Naturally, Liu Nian could not afford the special whitebait engine produced by Daqian. At the same time, a huge problem with Liu Nian's racing car itself also emerged.

Because the engines modified by Liu Nian do not have engine casings, they can only rely on the engine compartment to protect the engine coils.

But this is not truly completely closed. After all, the power in the engine room still has to be output through gears and shafts, so there must be a hole in the engine room for the shaft to enter. If the car enters the water, the water will enter through the hole.

Engine room, that's it.

Due to time constraints and lack of materials, the little guy did not have time to modify the engine or the chassis of the racing car. However, if thorough modifications were not carried out, the water intrusion problem would not be solved. This was a huge problem.

"Little guy, what are you going to do?" Jia Yapeng, who was sitting in the VIP room, looked at the little guy scratching his head and cheeks with a curious expression. He wanted to see this talented little guy.

Is there any way to deal with the waterproofing problem?

Time passed by minute by second, and one hour came quickly. Many children did not think of a good idea at this time, so they could only reluctantly do some waterproofing work, and then took the four-wheel drive to the game.

The starting point of the Tao.

"Let's go!" the four-wheel drive warrior gave the order, and all the four-wheel drive vehicles were placed on the track at the same time, and then started galloping together.

Not surprisingly, the top runners in the semi-finals were all ranked the strongest, but the distance between them and the cars behind them was not that big. After all, everyone had similar parts, and the differences were just some minor issues.

But soon, a car fell to the end with a very obvious gap. This car was Liu Nian's Evangelion.

At this time, the track has not yet entered the water, but the speed of Liu Nian's Evangelion has become quite slow. It is only about 2/3 of the speed of other cars. Naturally, it was dropped to the end from the beginning. When many cars

When he had already entered the second corner, his Evangelion had not yet entered the first corner.

"Hey, there seems to be a problem with our Evangelion. What happened? Did the function of the car be damaged during the modification process just now?" The four-wheel drive fighter in charge of the commentary asked curiously with the microphone. Others

The audience was also very curious, but they didn't understand what was happening.

"It's strange. This little guy's car seems to be very heavy, especially the rear part of the car. The weight looks huge!" Jia Yapeng, a professional, watched vaguely when he saw the driving conditions of Evangelion in the video.

There are some clues, but Jia Yapeng has no idea what the specific reason is.

After about two minutes, all the cars at the front had entered the underwater track. At this time, Evangelion had only just completed 2/3 of the distance and was held back by all the children for nearly 30 seconds.

Under normal circumstances, this is a gap that is absolutely impossible to catch up with, and Liu Nian can already admit defeat.

However, there was not much anxious expression on Liu Nian's face. Instead, he was full of confidence. This made many viewers curious about this child. At the same time, the first batch of racing cars that entered the water first began to appear in various forms.

Such questions.

The first is the speed of the car. The resistance of water is much greater than the resistance of air. Therefore, the speed of the car is nearly 30 meters per second. After entering the water, it suddenly drops to about 10 meters per second. This is the speed of a child who only needs to run a little.

That's how fast you can catch up.

For some racing cars, the speed dropped directly to about 7 meters per second after entering the water, which made all the children anxious.

From here, the cars continued to divide into two echelons. All the cars that could reach speeds of more than 10 meters per second rushed to the front, while the remaining cars gradually fell behind.

Some of the cars were getting slower and slower, and finally stopped slowly.

These racing car owners rushed into the water, picked up their precious racing cars, and replaced them with two new batteries, but it was of no use. This was because their engines had been flooded and completely scrapped, and they could only recover by replacing the engines.

power.

But replacing the engine took a lot of time, and they lost.

Just when these children were in despair, a figure slowly caught up with them. At the same time, his Evangelion was swimming leisurely in the water like a blue submarine, directly surpassing these unlucky children.

The child chased towards the second echelon.

"Isn't this car lagging behind? Why did the speed suddenly become so fast!!" Seeing the Evangelions chasing after them, the children who saw this scene were shocked and said to themselves.
Chapter completed!