Renault staff led Zhang Yifei to an unnumbered new car and said to him: "This is the car you will use in the race, if there is no problem with the inspection, sign the lease contract." ”

Because Zhang Yifei has the technical support provided by the European Toyota Racing Organization, he did not purchase Renault's event services, so he had more steps for acceptance. Otherwise, all these things can be handed over to Renault, and as long as the car is not man-made damage, they are warranted.

In a sense, it's similar to the process of buying a car yourself.

The structure of the formula car is relatively simple, and the static inspection can not see the fault of the engine and gearbox, so the acceptance is mainly to see whether the air kit is bumped during transportation, and whether the line and chassis structure are damaged.

Ukyo Yamamoto is Zhang Yifei's race engineer, and until the arrival of Toyota's technical team, he handled all aspects of the race. And Chen Zhi and Ah Hu also leaned over, and the basic vehicle inspection was not a problem for them.

The acceptance process was very fast, and Yamamoto Youkyo nodded towards Zhang Yifei, indicating that there was no problem. Now that the competition engineers have confirmed, Zhang Yifei also directly signed his name on the lease contract.

From this moment on, the right to use this Formula Renault car belongs to Zhang Yifei.

After getting the car, Zhang Yifei drove the car directly to the same rental pit, where the power package and suspension of the car will be adjusted.

Monza is a high-speed circuit, currently ranked second in the average speed of the F1 circuit, and when the Hockenheim circuit in Germany is rebuilt in 02, then the Monza circuit will win the title of the fastest track in F1.

So Monza can reach a top speed of more than 350 km/h in Formula 1, and even an average speed of more than 240 km/h, which is a very crazy speed.

The Renault 2000 is nowhere near as good as F1, but the average speed on this track will be as high as 180 km/h. You must know that in the previous Toyota youth training base, the average speed of F3 champion Takuma Sato was less than 160km/h.

Of course, such a huge difference in average speed has something to do with the design of the track. Monza has only seven corners and two very long straights, which allow the formula cars to speed up as much as possible, thus increasing the average speed.

"High-speed tracks require stiffer suspension and low downforce to reduce tyre grip. Because once you pass a corner, it's a crazy acceleration on a long straight, and the lower the downforce, the less grip the tires have, so that the acceleration is faster and you don't want to be overtaken on the straight. ”

Ukyo Yamamoto crouched next to the car with a tool in his hand, explaining the principle while adjusting the car's suspension and air package.

At the same time, Junko Takeda is also translating in Chinese, since Chen Zhi and Ah Hu will temporarily join the maintenance team in the future, then from now on, it is necessary to understand the mechanics and working principles of formula cars.

Chen Zhi and Ah Hu were two people, leaning next to the car, listening carefully to Yamamoto Ukyo's explanation. In fact, simple hardware-level maintenance is not a big problem for them.

Even if Yamamoto Ukyo asks the two of them to adjust the suspension directly, they can definitely rely on their own groping and complete the adjustment in a short time.

This is the same as Zhang Yifei's first contact with formula racing in Toyota's academy. He is very good at how to change gears and accelerate on the track, how to choose corners, as long as he is familiar with the career and speed of formula racing, all problems will be solved.

What Zhi Ge and Ah Hu lack at present is their understanding of the principles of formula cars and tracks. They know exactly what to do when they get started, but they don't know why they want to do it, which is their knowledge blind spot, and they need to follow the formula team and accumulate experience little by little.

However, Zhang Yifei also frowned because of one thing, that is, the two of them had poor English.

Brother Zhi is quite good, and he understands some professional parts and words, after all, he is half a professional class. Ah Hu belongs to the level of ignorance, a typical domestic master-apprentice inheritance, if there is no translation by Junko Takeda, he can't even do half guessing.

Whether you admit it or not, the racing technology of this era was ruled by Europe, just like the famous saying "master the master of the art to control the master", if you don't even know English, you can't fit into formula racing, let alone become a maintenance technician.

Zhang Yifei muttered secretly in his heart: It seems that after going back, this problem must be solved.

The tuning of the suspension and aerodynamic kit was very fast, and after Yamamoto Ukyo put down the tool, he came to Zhang Yifei and said: "Yifeijun, the suspension hardness has increased, so that the roll will be reduced when cornering at high speed." In addition, the downforce from the air package is also reduced, and acceleration is faster after cornering. ”

"But you should also pay attention to the loss of tyre grip, it is very likely that you will rush off the track because of the speed, and you need to be very precise in timing the brakes before entering the corner."

"I understand."

Zhang Yifei nodded, he was very familiar with the principles of these changes, and he had also run a lot of track races before.

In later generations, many young people in China like to add a rear wing to their cars, change an air kit or something.

Truth be told, aside from the fact that it looks sportier on the outside, it's not really practical.

Because aerodynamics is a very complex science, it requires very top engineering experts to go through wind tunnel testing to find the right route for the airflow to pass through. Unless it is calculated by the original factory, the large encirclement cannot be reasonably diversioned.

The other is the rear wing, which is to press the air down when the car is driving at high speed, forming a downward pressure on the car, which is rigidly pressed on the road surface to improve the handling stability of the car.

In order to generate enough downforce, it must be very fast, at least 120 km/h, for the rear wing to show its effect, and the faster the speed, the more obvious the effect.

In the current environment in China, 120km/h is the upper limit of the speed limit, and the vast majority of modified car owners rarely go on the track. So the big rear wing didn't improve much. On the contrary, some small displacement cars will increase the wind resistance and destroy the air passage calculated by the original wind tunnel, which will have some side effects.

"The change in suspension and air downforce is just a cold number, whether it is suitable for the track and the driver, you need to go to the field to test the run."

"Yifei-kun, are you ready?"

Yamamoto Youkyo also looked at Zhang Yifei with expectant eyes, because he had given them too many surprises at the Toyota youth training base before.

Now it's an F1 track, one of the top tracks in the world, and it's a high-speed track, and Ukyo Yamamoto really wants to see what Zhang Yifei can do on this kind of track.

"No problem, I'm ready."

The normal F1 race is three days, two practice sessions on Friday and the main race on the weekend.

Practice sessions typically involve test drivers driving the car for laps, with the team engineers evaluating the track attributes and driver feedback so that the car's dynamics, transmission, suspension and aerodynamics packages can be optimally tuned to get the best lap times.

This is also the main job of the test driver of the F1 team, after all, running the track is an extremely physically and mentally demanding sport, and the test driver is equivalent to sharing the pressure for the actual driver.

There is no practice race in Formula Renault, and Zhang Yifei naturally cannot have a test driver, so he can only do the work of test tuning himself!