"Li Dong, are you sure this thing can be ......?" Xu Guan was embarrassed to continue, but pulled a long tone, expressing his doubts and shock. Pen "Fun" Pavilion www.biquge.info

However, Li Fanyu knew what he wanted to express, and said with a smile: "Captain Xu, the Qingtian Fire Platform is a bit unconventional. But conventions are meant to be broken, aren't they?"

Xu Guan pondered for a moment, "That's right, I'm sorry Li Dong, I'm not questioning Zhengxin's R&D capabilities, but I really can't imagine that the original fire ladder can be this structure." ”

Xu Guan said this, but in fact, he still had some uncertainty in his heart. In his opinion, the structure of the fire-fighting equipment is so complex that it only took two months for Zhengxin to develop it. Even if the R&D strength is amazing, it can't help but give people a sense of imprudentness.

And in his opinion, it is impossible for Zhengxin to develop a complete vehicle of heavy-duty fire trucks, including a traction chassis, in such a short period of time.

Seeing the fierce and mighty F750 at the front of the car, he thought that Zhengxin might have found a previously developed heavy truck model to make trouble.

It's not that he's biased against the faith. On the contrary, as a native of Tiancheng, and Li Fanyu's respect for the martyrs during the 4.2 fire, he has a very strong sense of identity with both Zhengxin and Li Fanyu.

The reason why he has such doubts is that as a firefighter, he knows the importance of firefighting equipment too well.

If the car is not done well and there is a problem, the accident may involve the owner and a small number of people.

However, if something like firefighting equipment that carries human life in a critical time is careless, it will undoubtedly bring a disaster based on disaster.

The professional ethics constantly reminded him that he must abandon his personal emotions and take a cautious attitude towards the Zhengxin Qingtian Heavy Fire Ladder.

Li Fan Yubo caught Xu Guan's complicated expression, and he already knew it in his heart.

He waved his hand and smiled, "It's okay, I understand." The fire ladder has always been that structure, and now I can't help but see a different way of thinking, and anyone will not be used to it. But Captain Xu, I promise you'll change your mind after the test is over. Now let's stop dwelling on these minor questions and start testing?"

Xu Guan nodded, "Okay Li Dong, then let's start." ”

Because now this strange-looking fire ladder truck that is silently parked in front of everyone, from the chassis to the top, is independently designed and developed by Zhengxin itself.

So this time the main thing we did was a comprehensive feasibility test.

This represents the acceleration and deceleration of the F750 from the performance of braking. To the ladder extension speed, stability, load-bearing capacity, control system sensitivity and other performance, all need a comprehensive consideration.

In the event of a fire, these performances are related to the rescue time, and even the life safety of firefighters and trapped people. Therefore, the process of testing is very complicated and cautious, which is the fundamental reason why professional firefighters are required to participate in the first test.

As Li Fanyu waved his hand, the firefighters who had been waiting next to Qingtian for a long time immediately pedaled the car accompanied by the product engineer.

The first step is to focus on the vehicle's basic performance, including data such as acceleration and braking.

At present, the test site behind the R&D center has been completed, and it is now possible to carry out testing work on various types of vehicles.

Therefore, under the guidance of the product engineer, the firefighter in charge of driving the car drove directly to the standard test track of Zhengxin.

After the preparation, the basic performance tests of the vehicle began.

Because of the towing of a general fire platform more than 10 meters long and weighing up to 20 tons, the 0-100KM acceleration time of the F750 as the traction part can be described in four words.

Miserable! No! Bear it!

Twenty-six seconds,

Li Fanyu saw the speed displayed on the computer and directly covered his face.

The last time I did a vehicle test myself, it was a longbow...... Compared to the acceleration of the longbow, this ...... It's hard to look at.

But Xu Guan, who was standing next to him, nodded with satisfaction and praised Li Fanyu: "The motivation is good!"

I'm rubbing!

Li Fan was stupid.

That's not bad at this acceleration?

Well, I like you guys who don't know anything!

Li Fanyu could only smirk awkwardly.

It wasn't until more than fifty seconds later, when Qingtian ran a top speed of 155KM/h, that Li Fanyu nodded with satisfaction. For a heavy-duty truck in the state of towing heavy loads, this achievement is still okay.

It seems that after the redesign of the cylinder block, the piston formed a shortened TS-L609 diesel engine, and the performance is still good.

He was satisfied, and Xu Guan on the side was of course even more surprised!

He clearly knew that the Manson Clay 7OS-III fire ladder truck in the squadron that used the front of the Mercedes-Benz Actos tractor had a maximum speed of 115KM/h!

In the rescue process of the fire truck, the faster the speed to the scene, it will add a moment of time to the rescue and add a guarantee for the safety of the people's property!

From this point of view, the essence of a fire truck is the same as that of an ambulance.

Speed equals time, and time equals life!

However, this is not the most surprising and shocking part of this test.

When the 100-0KM brake test data appeared on the screen of the test notebook, Xu Guan stared directly at Li Fanyu and said, "Is this really true?"

The test data on the notebook is impressively written 61M!

That is, a dead weight of up to 6.5 tons, plus a universal fire platform and ladder with a weight of 20 tons. From 100KM/h to stationary, it only took a short distance of 53 meters!

The greater the mass of the object, the greater the inertia, which is the law of physics. For thousands of years, all moving objects have to follow this law, except for a few protagonists in Japanese comics who are not limited by this law.

So the question is, is the braking distance of 53 meters 100 kilometers short?

Compared to the longbow and RS of the main letter, it is not short.

However, if compared with all the heavy trucks of the same level as the F750, and even most of the light trucks in the lower level, this braking distance result is simply a complete explosion!

When the ordinary family car is 100 kilometers per hour, the braking distance is 40~45 meters, and the braking distance of the general large truck is more than 50 meters when it is empty!

When the heavy truck is driving, if you brake with all your might, the loaded goods will rush to the front due to inertia, or even flatten the front of the car, or push the cockpit with the iron belt driver flat. Semi-trailer tractor is more dangerous, if its front wheel braking ability is better, and the rear wheel brake jet lag, the front of the car slows down, the car is still running forward, the front of the car and the car will not be "folded" together, it is easy to roll over. Many manufacturers have canceled the braking of the front wheels for safety reasons. This has become an unspoken rule in the industry.

For such a truck, it is possible to braking at a distance of 100-0KM up to 1000 meters!

And what does a shorter braking distance mean?

It means that the driver can rest assured that he can go to the high speed when he needs to do it, without worrying about the danger that the speed is too high will bring to himself or other vehicles and pedestrians!

Because in the event of such a danger, they can brake the car!

This kind of braking performance is undoubtedly a guarantee and gospel for fire trucks that often have to shuttle at high speed in the urban area and rush to the fire scene!

The question Xu Guan asked was actually a sick sentence.

But Li Fanyu could understand this incoherent language, he spread his hands, and said lightly: "Captain Xu, as you can see." ”

On the surface, the wind is light, but Li Fanyu's heart is already stinky and open;

That's what I wanted!

Wowhaha!

The six pairs of 385/95R25 tires on the F750 are all expensive!

Hmph, the R25 wheels and 385mm wide tires specially upgraded by the master are made of soy sauce?

The F750 is equipped with a fully floating brake that has been weakened according to the Hot Wheels braking system, but the structure has been upgraded. This brake uses a uniquely designed wet brake pad that fits 95% of the size of a heavy truck brake without changing!

At present, the contact area of the general heavy-duty truck brake is only 50-60%, and the total contact area of the brake accounts for less than 50% of the whole week.

Now the F750 is equipped with a fully floating brake, the brake pad contact area reaches 320 degrees of circumferential contact area, through the special change of physical structure, the total contact area is more than 3 times that of the existing brake!

Is it true that these things are all made of soy sauce?

The four parts of the entire Atlas project, despite the short development time, quickly achieved key results. But Li Fanyu can pat his chest and guarantee that all designs exist to meet the ultimate goal of saving people from fire and water.

No little bit of irrigation and coping!