Mountain bikes are bicycles designed for off-road (hills, trails, wilderness, gravel trails, etc.) and were born in San Francisco on the west coast of the United States in 1977.

At that time, a group of young people who were keen to ride beach bikes to have fun on the hillside had a whim: "It would be a lot of fun to be able to ride a bicycle down the mountain." So he started designing the off-road bike, and it wasn't until two years later that he was officially named a mountain bike.

Since then, "downhill competition" has emerged as a new sport in sports competitions, where athletes ride mountain bikes along the prescribed downhill route at high speed, and the fastest one wins, attracting many enthusiasts. Although the bicycle began in Europe, the mountain bike invented by the Americans swept away the traditional bicycle concept and brought a new wind to the world.

In his last life, he lived abroad for 20 years, and outdoor cycling has always been Yang Weiping's hobby at work. This habit was maintained until he returned to China, and he rarely drove to work, choosing to ride a bicycle instead.

As a scientific research expert, Yang Weiping naturally pays attention to the development process of bicycles. It can be said that he is quite familiar with all kinds of aluminum alloy, titanium alloy and carbon fiber bicycles produced at home and abroad in later generations.

From the moment he bought the smelter, Yang Weiping has been thinking about what kind of products to choose for the first step of starting a business, making crazy money in the global market.

Aluminum alloy has a wide range of uses, such as bicycles, motorcycles, automobiles, trains, ships, aircraft, missiles, launch vehicles and other fields.

As the free capital with the highest concentration of commercial espionage in the world, Hong Kong is obviously not safe to engage in things that are too high-tech. After thinking about it, the bicycle became Yang Weiping's best choice.

The bicycle structure is not complicated, the existing bicycle industry chain in developed countries is also quite perfect, and the upstream and downstream parts and raw material suppliers are also quite mature, but due to the limitations of the current thinking concept, today's bicycles are far from having so many different styles and designs of later generations.

And this is precisely the biggest advantage that Yang Weiping currently has.

The frame and fork have always been the most important parts of the bicycle, and the requirements for the frame and fork are different for different bicycles.

In particular, mountain shifting bicycles, in addition to the requirements of a solid, durable, lightweight, and dexterous frame, also add high requirements for suspension performance to the fork.

Through the study of bicycle frame materials, Yang Weiping can accumulate first-hand important information for various materials required for future engines.

Moreover, for the sake of producing high-quality bicycles, various precision CNC machine tools required by Hughes Field imported from Europe, even 30,000 tons of die forging hydraulic presses, 12,500 tons of horizontal extrusion hydraulic presses, hot-rolled aluminum plate rolling mills with a roll width of more than 2,800 mm, cold-rolled aluminum plate rolling mills with a roll width of more than 2,800 mm, steel pipe cold rolling mills with a diameter of 2-80 mm, steel pipe cold rolling mills with a diameter of 80-200 mm, alloy sheet cold rolling mills with a roll width of more than 2,300 mm, 10,000 tons of hydraulic presses, Super large complete sets of equipment such as 20-high strip mills with a roll width of more than 700 mm can also be obtained.

This is also the deep-seated reason why Yang Weiping finally chose to cooperate with Hughes Field.

Therefore, in order to make a splash, Yang Weiping comprehensively considered the existing raw material supply capacity of Tiangong Smelter, and finally came up with this Giant variable speed mountain bike, which is basically made of high-quality aluminum alloy, as a stepping stone.

Hughes Field wasn't exactly an amateur in bike design, and the shape of this shifter mountain bike was really good, but when he saw the size of the frame fittings, he couldn't help but be stunned.

"Mr. Yang, this design of yours is indeed too charming, but if according to your design, wouldn't the weight of the frame, fork, rim, cutter ring, steel wire and other parts add up to be heavier than that of a truck?" Hughes Field questioned cautiously. …,

Yang Weiping smiled indifferently, picked up the two aluminum alloy tubes, knocked the two tubes lightly a few times, and said with a smile: "Mr. Field, if it is made of chromium-molybdenum steel, the weight of this car will definitely exceed the standard." However, with this new 6063 alloy from our Tiangong smelter, I guarantee that it is even lighter and more agile than the lightest Pegasus moped. ”

Hughes Field stared at the two aluminum alloy tubes in Yang Weiping's hand with bright eyes, and asked urgently, "Mr. Yang, can you let me take a look at the 6063 alloy you said?"

"Absolutely. Yang Weiping nodded and smiled and handed the aluminum alloy tube to Hughes Field.

Hughes Field took it and checked it in his hand, then carefully observed the thickness of the pipe wall, the excitement on his face gradually dissipated, and he frowned and asked, "This alloy pipe is made of such thin materials, and the weight is naturally light. But, Mr. Yang, are you sure that the safety performance of a frame made of such materials will be guaranteed?"

Yang Weiping smiled disapprenously: "Mr. Field, I think your company should have a more professional materials laboratory, you can let people take these two tubes to do any tests, and we will use data to speak." ”

"Lina, Lina, you get me Cook Woods right now, and if he can't show up in front of me within five minutes, you tell him to get the hell out of me right away!" Hughes Field shouted out of the office without hesitation.

"Yes, yes, Chairman, I'll go right away!" Lina replied from outside the office, followed by the sound of rapid heels of high heels hitting the ground, and gradually faded away.

After a while, there was a rush of footsteps outside the office, followed by a knock on the door.

"Please come in!" replied Hughes Field.

A Caucasian European man in his forties, dressed in a white lab coat and with a scruffy beard on his face, pushed the door in, his breathing was a little heavy and he was panting and bowing to Hughes Field, "Boss, what do you command?"

"I have a new alloy material here, and I need to know all the physical properties and related chemical properties of this material in the shortest possible time!" Hughes Field raised the aluminum alloy tube in his hand and said in a rather serious tone: "Mr. Cook Woods, how long will it take to get results?"

Cook Woods raised his hand to hold the black-rimmed glasses frame on the bridge of his nose, hurriedly stepped forward to take the aluminum alloy tube from Hugh Field's hand, looked at it carefully, and then tapped the two tubes on each other, listening carefully to the crisp sound coming from the cavity.

"Boss, what are you going to do with this aluminum alloy tube?" asked Cook Woods, looking very professional.

Mr. Yang brought a new bicycle design that was prepared for most of the parts of the body to be made of this new alloy. Hughes Field picked up the design of the variable speed mountain bike and said to Cook Woods indifferently: "You are the first-class designer in Europe that I hired, how about you take a look at this design?"

Cook Woods took the blueprint with both hands, looked at it carefully, and soon, he took out the pen and notepad he had with him, and pulled out a series of formulas to calculate according to the parameters on the blueprint.

More than ten minutes later, Cook Woods stood up and looked at Yang Weiping without any expression on his face, and asked with a sneer, "You designed this?"

"Yes, is there any problem?" Yang Weiping asked indifferently.

"I'll admit that your design is really new and bold, especially this bike, which you call a mountain bike, will definitely appeal to many young outdoor enthusiasts in the early stage due to its unique shape and use. Cook Woods said, his tone suddenly changed sharply, and he rebuked angrily: "But if someone really rides this mountain bike down the hill at high speed, you are not selling a bicycle, but murder!"

Yang Weiping smiled quietly, "Mr. Cook Woods, you haven't experimentally tested this alloy material yet, it's too irresponsible for you to say that!"

"Hmph! Isn't this so-called new alloy material you brought a kind of aluminum-zinc series alloy?" Cook Woods said with a disdainful expression on his self-righteous face: "This material is not a new material in Europe, and some people have tried to use aluminum alloy to make bicycles in the past, and some people even choose titanium alloy, but it turns out that aluminum alloy is not suitable for making bicycles at all, and the cost of titanium alloy is too high."

If you build this so-called mountain bike according to your design parameters, I can be sure that the owner will ride it down the hill and in less than half of it, your mountain bike will fall apart!

"Don't use your ignorance to show off your professionalism!" Yang Weiping sneered and glanced at Cook Woods with an obvious contempt, "How much do you know about aluminum alloys? How many kinds of aluminum alloys do you know now? What are their uses? The alloy I provide can even be used as a fuselage material for military fighter jets, is it not suitable for being used as the main material for bicycles?"

After finishing speaking, Yang Weiping said coldly to Theses Field with an unhappy face: "Mr. Field, I am here to help you solve the problem, not to listen to the frog at the bottom of the well that you called to slander and slander!"

"Fake!Shet!" Cook Woods suddenly became furious, and slammed his fist at Yang Weiping's face: "You damn liar!"

Qiu Fang, who had been sitting on the sofa and watching Cook Woods' movements with cold eyes, suddenly bounced up, rushed over from the diagonal stab, and grabbed Cook Woods's wrist with great precision with his right hand, twisted and shaken, and instantly removed the opponent's right elbow joint.

"Ah!!!h

Hughes Field was stunned by this sudden change, and stared at the murderous Qiu Fang, obviously deeply shocked by Qiu Fang's agility and ruthless skills.

In fact, it wasn't just Hughes Field who was stunned, but even Yang Weiping was a little caught off guard by Qiu Fang's sudden move.