The second mother got the source of the film that night, and in order to save man-hours, she also bought all the sample cars in the film on Taobao for him, a total of 47 units.

"Make no mistake, you should buy Neon Tiangong, the quality of the cars on the market is very poor. ”

Xiong Xiao is right, the designated manufacturer of the original 4WD is Neon Tiangong, and the logo is two five-pointed stars (the one on the clothes of the 4WD fighters).

In the early 90s, Cai Dongqing, the founder of Audi Double Diamond, saw a four-wheel drive car on the way to Hong Kong, so he began to find Tianmiya to cooperate, and in 1993, he founded Audi Double Diamond to produce mini four-wheel drive vehicles, and the cooperation stopped in 1998.

As for the Audi double-diamond four-wheel drive car, which was the most popular on the market later, it was all manufactured by another factory, that is to say, what was pirated twice could be sold in Huaxia.

And Tamiya, the original manufacturer, not only has higher requirements in terms of materials, but also has strict quality control.

Especially for assembled models, accuracy is critical.

For example, a domestic four-wheel drive vehicle has a series of problems such as unstable stickers, coarse burrs, and gaps in parts that can be seen on Mars.

Since Xiong Xiao wants to be the originator of the figure, how can he be embarrassed to take out such a rough thing?

He doesn't know where his mother got such more than 40 cars from this time, but the two creatures of girls and mothers are both virtuous to buy things, if you don't write a 200-word note with a picture in advance, then eighty percent will buy the wrong one.

"If you change it to Tamiya's, it's best to bring the design drawings with you. ”

"I've been asked to do everything, so why do you need the host?" retorted the second mother, who felt that buying the model back was already the biggest concession. "Besides, can you read Japanese?"

choked on these words, Xiong Xiao only recognized it, and restored it to a mere four-wheel drive car, and he would not pull down his face and beg for help.

Each car box is equipped with an installation drawing, as long as you are over 8 years old, people with a normal IQ can understand it.

The parts of the four-wheel drive car can be roughly divided into two parts, the chassis and the body, because the body can cover the four tires, so it is also called a full-coverage rail car.

Prior to this, there were only two types of car models, one static and the other remote.

In 1982, Neon Tamiya Company removed the steering and remote control devices from the radio-controlled racing car used in professional competition, and developed and sold a miniature four-wheel drive model car, which gave birth to such a thing as a mini four-wheel drive car.

The structure of the car body is very simple, the shape is fixed, you only need to draw the body according to the white mold, and then set the proportions according to the body, and then make a sticker and you're done.

Learning is in the chassis.

The chassis is made of ABS engineering plastics, and there are many types, and every few years Tamiya company will launch new products.

The earliest model is also the model that players in Huaxia have the most contact with - S1 chassis, short and concise, with an absolute advantage in speed, in 47 prototypes, half of them are this kind of chassis, God of War, Rapid Axe, Spider King, Devil Commander, etc... As long as this chassis has been used, it knows that as long as it hits, it will be 100% rotten.

Then there is the SFM chassis, a major feature is the use of front motor, high hardness, strong climbing force, suitable models such as rapid Cobra, Big Mac, etc.

There is also a chassis, which is the TZ chassis with the "Whirlwind Charge" configuration designed by the protagonist Xing Mahao, which is overall slender and combines the advantages of the first two chassis, and is the standard chassis for Whirlwind Charge and Hurricane Sonic speed.

It is said that it was precisely because the designer of the Audi Double Diamond tampered with the chassis of the Tamiya family without permission, and then issued an LZ chassis, which angered the Tamiya executives and finally led to the termination of the contract between the two parties, so the development of domestic four-wheel drive vehicles came to a standstill.

In the first step, only these three chassis appeared in the play, and as for the later Tamiya factory's own products, such as SX, which is a product with a motor from under the chassis, due to its ugly shape and slow speed, Xiong Xiao does not plan to restore.

As for "War Dragon 4WD..... He thought about it and forgot it.

S1, SFM, TZ, each chassis has a corresponding part configuration, which doubles the workload of Xiongxiao.

If the body can be reproduced in the assembly drawing, then the parts on the chassis need to be accurately valued.

For example, the length of the propeller shaft, the gear, the diameter of the guide, and the material of the tire, without the assistance of internal design data, it is not easy to measure the data.

After thinking about it, the bear owl still decided to use the primitive method of vernier ruler.

The length, width and height of the chassis, the size of the gears, the gear ratio, and the bending degree of the conductive sheet all have to be measured with a ruler in order to reproduce them.

At this moment, he seemed to feel that he was the siege lion of Zotye.

Finally, after drawing more than 80 design drawings, Xiong Xiao finally got the most original design drawings.

But this is just the beginning, the reason why mini four-wheel drive cars can cause such a big trend is not only because of these 47 cars, but more importantly, DIY, is modification.

For example, if you change rubber tires to sponge tires, you will be faster on dry tracks because the weight of the car is reduced, but if you run on wet ground, you will slow down like dogs.

For example, if you change the 3.5:1 high-speed gear to a 4.0:1 torsion gear, the speed will be slowed down, but the climbing force will increase.

For example, motors with different speeds have a decisive impact on vehicle speed.

The motor on the universal four-wheel drive vehicle is composed of a magnet made of rare earth alloy material as a stator and a rotor made of low reluctance alloy, and the no-load speed of this motor can reach more than 56,000 rpm.

It is worth noting that Tamiya did not produce ultra-high-speed motors at the beginning, and only companies like Audi Double Diamond, which know the high points of the Chinese people, will produce a large number of high-speed motors, and even some companies produce the very famous M-162 hot wave motor, with a speed of up to 220,000 rpm.

Although the motor, the source of power delivery for the whole vehicle, may seem complicated, the construction is much simpler than expected.

Many four-wheel drive enthusiasts will even use copper wire winding to make a motor, and any one of them is faster than the production of Tamiya, this kind of thing Xiong Xiao has naturally done a lot, so he didn't disassemble the motor at all, just based on his own memory of winding, he drew the internal structure of the motor.

Xiong Xiao sent the original design drafts of the three chassis and three sets of parts to Ye Fatzi, and asked him to convert these paper things into electronic files, and then the next thing is to talk about the toy company and the broadcast platform.

Anyway, have you all seen the four-wheel drive brothers? Those who have watched this film should all belong to late marriage, right?