A nation's industrial development begins with junior engineers.

"tractor!"

"What? This thing is a tractor too? Isn't the Dongfanghong tractor like a small tank?"

"Enough with the nonsense, just tell me if you know it or not!"

"Um, should we submit an application? This seems like a bit too ambitious."

"Apply? Got it?"

Yang Youning's eyes bulged slightly as he looked at the well drilling machine approval form that Li Changfu had taken out.

"Old Li, well drilling machines and tractors are completely different things, aren't they?"

Li Changfu pointed to the black blob on the drilling rig blueprints and asked, "What's this called?"

"A self-developed power unit."

Li Changfu then pointed to the "tractor" blueprint and asked, "What's this called?"

"A technology based on a self-developed power unit..."

Li Changfu stated confidently: "During the research and development of drilling rigs, we discovered that our self-developed power unit has strong performance. It's reasonable to modify it into a self-propelled machine!"

Yang Youning wiped away his cold sweat. "Okay, okay, we'll do it your way."

"Hmph, don't be so grumpy, kid. National Day is just around the corner. We'll load a tractor with a hand pump and drilling rig and waddle around like this~~"

Yang Youning squinted and imagined what he heard.

"Done!"

Ren Zhongyuan and Li Changfu exchanged a glance. Deal!

Before the master craftsmen left, Li Changfu broke down the blueprints and handed them over to them.

According to our chief engineer, once assembled, this thing will be China's first hand-held tractor.

The master chefs were excited again.

Enough talk, let's get started!

With so many skilled workers here, a mere hand tractor is a piece of cake! What a load of rubbish!

Let's not even talk about the engine; it's readily available and still chugging along in the workshop.

But this gearbox is different.

That night, Jiang Xia just sketched it casually. The gearbox part was a complete black blob; there were no blueprints!

Ren Zhongyuan and his team brought over the remaining stock from the Ministry of Agricultural Machinery, only to find that it was impossible to install.

Simply put, it's too big. The gearbox alone is bigger than that single-cylinder diesel engine.

Yang Youning looked at the tractor that was only missing a gearbox to be assembled and sighed.

"Should we go back to the village and bring Jiang Xia back?"

Li Changfu re-examined the blueprints and shook his head: "It's so late, why bother the child?"

"Besides, are we, a group of master chefs, not even as good as a child?"

"That kid also said that mechanical design can be simplified!"

Ren Zhongyuan frowned as he looked at the blueprints. "Old Li, you mean?"

"Yes! That's it! If we can't do 3+1, let's just do 1+0!"

“We can’t use a twin-cylinder engine, we can only use a single-cylinder one!” Li Changfu pointed to the huge flywheel next to the single-cylinder engine.

3+1和1+0指的就是拖拉机的档位，3+1就意味着有3个前进挡加一个倒挡，+号就代表着空档。

Li Changfu's "1+0" concept is also easy to understand.

There's only one forward gear.

Just like a bicycle, you pedal and glide forward. Why would you need reverse? Can't you turn?

Can't make the turn? Need to turn around?

Ha, that's because your skills are lacking, it's definitely not the fault of our machines!

With a simplified method, wouldn't solving the problem be a breeze?

Two freshly made rebar bars were used as handrails, and the operating mechanism was directly mounted on these handrails.

Anyway, it's just one accelerator and one brake.

This brake is also a simplified version, not like the drum brakes of a car. Ren Zhongyuan made a detachment structure, so that when the steel cable is pulled, the engine's drive shaft will detach from the bearing below.

In other words, the braking is not immediate, but rather a gradual process.

Yang Youning objected to this, and Ren Zhongyuan asked impatiently, "Do your bicycle brakes work?"

"Uh... not quite right, the rubber is worn out, and I forgot to replace it."

"Then how did you brake so suddenly?"

"The soles of your feet?"

"But that's different!"

"what!"

With the control mechanism resolved, a belt was fitted over the engine flywheel at the very front of the vehicle, with one end of the belt directly attached to the drive shaft of the rear wheel.

The final result of this "feasibility study on a self-propelled power machine based on a self-developed power unit" is:

The front two wheels are those of a small jeep, and the back two wheels are those of a Jiefang truck.

The control lever, still radiating heat, had a steel wire rope on each side.

After a flurry of activity, it was already dawn.

Jiang Xia, who rushed back to the factory to get diesel fuel, was astonished to see the "little grasshopper" in front of him.

"Master, you guys are really amazing!"

Li Changfu took a sip of strong tea: "You didn't even finish the drawing, you made a black blob for the gearbox. We just figured it out ourselves."

"You're back just in time! Help me see if there's anything that's not quite right!"

Jiangxia brought out the analyzer and scanned it from beginning to end.

Amidst a sea of ​​red light, the final result was surprisingly green?

"Simulation complete, self-propelled machinery is ready to operate."

That's all I have to say. This "little grasshopper" that's radiating a patchwork glow is so poorly designed that even the scanner can't be bothered to comment.

"Master, everything's installed, let's just turn it on and test it!"

Jiang Xia bent down, adjusted several areas where the red light was particularly strong, and then hung the towed cart behind the little grasshopper.

Yes! A tractor only looks good with a cargo bed.

"Put-put-put~~" Jiang Xia started the engine, lowered the brake cable, and the drive shaft and gears connected, making a screeching friction sound.

"Clatter clatter clatter~~" The transmission gears and transmission shafts meshed in place, the machine head suddenly lurched forward, and the whole "little grasshopper" dragged the cart, swaying and running forward.

The cart hanging behind was swaying up and down due to its center of gravity.

Seeing this, Yang Youning simply jumped onto the cart and helped Jiang Xia stabilize it.

"Why are you hanging that thing up there, kid?"

Jiang Xia lightly pulled the accelerator on the steel cable, "Hehe, of course I'm just showing you something."

"Those who are nimble on their feet, come up here and see how many pounds this little grasshopper can carry!"

Upon hearing Jiang Xia's words, Wang Kui was the first to jump up, followed by Master Qin, Master Lin...

Before long, the cart was full of people.

"Hold your positions firmly!"

Jiangxia pulled the accelerator, and the engine spewed out a cloud of smoke, making a much faster and more urgent sound.

"Da da da da~~~"

The little grasshopper was not happy, but it kept running forward.

"Run! Run!" the people standing on the cart cheered.

"We did it! We did it!"

"Long live!" Ma Weihong supported Li Changfu and followed closely behind the little grasshopper.

Ren Zhongyuan watched the "little grasshopper" depart into the distance, and tears of joy streamed down his face. It was a success! China's own tractor!

The cheers attracted the attention of other steel rolling workers, who also raised their hands after hearing Yang Youning's incoherent introduction.

"Long live! Long live!"

"Our steel rolling mill has manufactured a tractor!"

Jiang Xia controlled the car, moving it forward steadily. A group of people jogged behind it.

As National Day approaches, red flags are planted along both sides of the factory roads.

Someone took one out and put it in Yang Youning's hand.

Yang Youning immediately started waving it around.

Wang Kui, seeing this with envy, jumped off the cart, grabbed one, and waved it in his hand. The others on the cart followed suit, and soon the entire cart was covered in waving red flags.

Jiang Xia was also excited. Seeing that he had just arrived at the factory gate, he made a sharp turn and drove straight out of the gate.

Seeing that their director was also in the car, the security officers opened the gate early.

"We workers have power!..."