After the beginning of autumn, it gradually became a short night, and after half past six o'clock, it was dark, and under the command of Jiang Yan, the lamp installed in the courtyard was lit.

All the people surrounded Jiang Yan to see where he tossed the bicycle that he had just bought for Jiang Sirui for a long time, and it was this time of kung fu that Jiang Yan dismantled the good bicycle.

"Stone, go and get all my tools. By the way, all the parts I brought back in the evening were also brought to me. ”

Hearing Jiang Yan's command, after the stone answered, after taking the parts that Jiang Yan brought back, he turned around and went to get the parts that Jiang Yan brought back, and then went to the house to bring his own tools over as well.

With complete tools, Jiang Yan began to install the parts he designed on the straight car.

Jiang Yan thought about turning the bicycle into a simple motorcycle before, but there were too many improvements like that, and it was not very beautiful after improvement, so Jiang Yan canceled this idea.

Then I remembered that the power-assisted bicycle was extremely popular in later generations, and the power-assisted bicycle did not have a control valve, but automatically completed the power-assisted acceleration process through the cooperation of the torque sensor and the motor controller, but now there is obviously no motor drive, and Jiang Yan's design is to replace electricity with oil, so the function has to be redesigned.

So Jiang Yan can only find another way, the same torque sensor to cooperate with the engine to complete the power, as long as you ride up, climb the foot, the engine will start, to provide assistance to the bicycle, the faster you climb, the faster you climb. It's relatively easy to do.

Jiang Yan uses the bar engine installed in the middle of the body, that is, the bottom bracket position, the middle engine is connected with the frame, and the power is transmitted through the chain and the rear wheel, and the two sides of the engine are installed with pedals, in the case of no oil in the engine, the rider can achieve manpower riding through the pedal, and the resistance is no different from the normal bicycle.

With the help of stones. Soon the bicycle was reinstalled, and after installation, Jiang Yan immediately filled the fuel tank with fuel.

After adding oil, Jiang Yan immediately got on the bicycle, walked around the yard, and made himself to board the pedal faster, the engine will start, and then provide kinetic energy, due to the assistance of the engine, the riding time is quite easy and the speed is a lot faster, through the feeling, he can provide a hundred and ten meters of power by climbing a few times, which is quite labor-saving.

After Jiang Yan rode for a few laps, he got down and adjusted it a little before pushing the modified bicycle in front of Jiang Sirui.

She proudly pointed to the modified bicycle and said to Jiang Sirui: "This is a power-assisted bicycle that I modified for you, you won't be so tired when you ride to work in the future, come and try it." ”

After Jiang Yan said this, he directly took Jiang Sirui's hand and put her hand on the handlebar.

As for what Jiang Yan said about the power-assisted bicycle, Jiang Sirui listened a little blindfolded, after all, she is also a researcher, she is not unfamiliar with the engine, in her opinion, Jiang Yan is also adding an engine to the bicycle, but there is no engine switch.

With a fresh feeling, Jiang Sirui rode the bicycle directly, at first she couldn't let go, but with the start of the engine, she felt the benefits of the bicycle with the engine installed, which was too easy and too labor-saving, which couldn't help but make her admire Jiang Yan's idea, I don't know how he grew up with this wonderful idea.

After two laps of riding, Jiang Sirui stopped directly.

"How does it feel?" Jiang Yan asked.

Hearing Jiang Yan's question, Jiang Sirui was quite happy, and pulled Jiang Yan and said directly: "Yes, I feel that it is too effortless, and the speed is not slow." ”

After saying this, she asked Jiang Yan directly.

"Brother Jiang Yan, how fast can this engine you design reach, and how far can you run with one refueling."

Hearing Jiang Sirui's question, Jiang Yan sighed and said: "The engine I designed is only five horsepower, and this engine alone can reach a maximum of 60 kilometers per hour, but now that it is installed on the bicycle, I have simplified it a little, and this engine is less than four horsepower and can reach 20 kilometers per hour." You can run 30 kilometers with a single refueling, which is more fuel-efficient. ”

Jiang Sirui is not a person who doesn't know anything, he originally thought that this engine was small, at most about three horsepower, and he thought that such an engine could reach five horsepower.

To be honest, such an engine is a bit wasteful on your own bike, and you can do other things with this engine.

"Boss, can you let me ride." Xu Damao, who was visiting around the bicycle, suddenly ran over and flattered Jiang Yan.

When the bicycle was installed just now, several of them were watching the whole time, and when it was fully installed, it shocked their jaws.

They don't know what power-assisted bicycles are at all, they only know that bicycles can also be converted into motorcycles, and everyone's hearts are itching when they think of this.

Although Jiang Yan's nephew did not refuse them to use it, and they could ride around a few laps from time to time, but after all, this thing is the boss's thing, not his own, and it is not good or convenient to occupy it for a long time.

Bikes, they everyone has one, if they are converted into motorcycles, it is quite a pull,? It's just that the performance is unclear for the time being.

Xu Damao couldn't hold himself back at first, and went directly to Jiang Yan to ask, and then he wanted to ride it to try, and there was no one who was so cheeky.

"You want to ride! You ask your sister-in-law to go, and that's her bike. "This is something I gave to my wife, and it's not good to make my own decisions.

"Sister-in-law, look." After listening to Jiang Yan's words, Xu Damao turned his head and looked at Jiang Sirui flatteringly.

This suddenly made Jiang Sirui a Dalian red. Hurriedly said yes in a few days.

The result was good, everyone came to ask Jiang Sirui for the intention of riding this car, and after a while, cheers sounded in the yard.

"Is this thing easy to produce?" Jiang Sirui opened his mouth and asked Jiang Yan.

"It's okay! It's not too difficult, it's not a deep thing, I have the drawings, you can take it directly if you want. ”

Hearing Jiang Yan's words, Jiang Sirui nodded slightly, and he also wanted to see what this drawing looked like.

"Boss, I know how much it costs to modify such a bike, and which one of my bikes can be modified."

"Of course it can be modified, it's not a lot of money, and the cost of your sister-in-law's bicycle modification parts is less than fifty yuan."

"Where can it be produced?" He Yuzhu then asked.

"You're going to go to Bangs, and the parts on that bike are what they've made in their workshop. Take it back and I'll help you modify it. ”

Install it for them, naturally impossible, when he installed it just now, he had already taught the stone by hand, they only need to buy parts for modification, Jiang Yan let the stone do it, and he will guide it by the side.

What Jiang Yan didn't know was that Jiang Sirui took the design drawings to the Aviation Bureau for study after Jiang Yan's consent.

Similarly, with the help of this engine, Jiang Sirui was also quickly promoted.

(End of chapter)