big country car

"It seems that we have to find a dismantled part. It would be too expensive to buy a brand new gearbox. If we buy accessories, we only have gears and bearings. The gearbox case is not for sale," Luo Yongwang said.

The shell is broken, just change the shell. The problem is that the shell is generally not broken, and there are no accessories. Therefore, if you want to change it, you have to replace the whole gearbox. It is too expensive. Luo Yongwang is reluctant and can only wait. Replaced the car parts.

"It doesn't need to be so troublesome, and it is very simple to fix it."

"How to fix it?"

"On the opposite side of this patch, add another patch."

"what?"

All eyes are on Qin Shaoyou, wanting to see the mischievous expression on Qin Shaoyou's face.At this time, the lights in the repair shop had already started to turn on, and the light of the incandescent lamp shone on Qin Shaoyou's extremely serious face.

The jitter caused by the patch is already unbelievable, and then adding an additional patch to fix the jitter problem is even more bullshit!

Even Liu Shengli's face was a little embarrassed. Xiao Qin, it's not clear whether this patch is the cause of the malfunction. You need to add another patch. What kind of repair method is this?

"Haha, hahaha." Zhao Mingming laughed heartily: "Master Luo and I have been repairing cars for so many years, and we have never heard of this repair method. There is no leak, and a patch is welded on, and it is welded like this. , It can also solve the problem of the car shaking, haha, I laughed so hard. If this can also fix the car..."

"If it's not repaired well, there's nothing to lose, it's just a few patches. If it's repaired, it won't be like driving a car or sitting in a massage chair. So, do you want to try?" Qin Shaoyou looked at Luo Yongwang.

Luo Yongwang looked at Qin Shaoyou, then at Liu Shengli, and nodded.

Liu Yongliang hurried over: "Okay, I'll do the welding. I'm the best at welding. I can weld the patch on without lifting the gearbox."

Liu Yongliang's work is really quick, and he welded everything in threes and fives.

"Let me try." Zhao Ming said, jumped into the cab, started the engine, stepped on the accelerator, and started the car just like Qin Shaoyou did just now.

The car roared and rushed to the gate of the factory. Unfortunately, he was still not as nimble as Qin Shaoyou. He had just shifted to third gear, and before he had time to step on the accelerator, he had already rushed to the gate. Zhao Ming simply flicked the steering wheel, Drive the car directly onto the road ahead.

It was quiet in the repair shop.Everyone was waiting for the van to come back in a circle, waiting for the results of Zhao's test drive tomorrow.

Qin Shaoyou was very calm, since he came here, of course he couldn't let it go. There are so many old cars, let's take a look at them one by one, we can't test the cars, it's good to have an eye craving.

Not long after, the van drove back with a roar, and everyone looked at Zhao Mingming's face, only to see that his face was full of surprise.

After the car came to a complete stop, Zhao Ming jumped out of the car, closed the car door with a bang, and then shouted at the top of his voice.

"Master Qin, Master Qin! Just patch it up and the car will be repaired! I, Zhao Mingming, are convinced. Tell me, what's going on?"

Just now, Zhao Mingming was still called Qin Shaoyou, which seemed very natural, but Qin Shaoyou chased him one by one, brother Zhao, now, Zhao Mingming said that he was Master Qin, and this title already explained the problem.

Liu Shengli nodded in satisfaction. It seems that Qin Shaoyou will come here to repair cars to earn extra money in the future.

At this time, Liu Shengli's heart was also full of question marks. How could the car be repaired with a patch?

Qin Shaoyou was wandering around beside the Citroen, and when he heard that the car was repaired, Qin Shaoyou smiled: "Have you ever heard of resonance?"

"Resonance? We also understand resonance. Some cars will buzz when they drive at a certain speed. After that, it will be fine. It is because of resonance." Luo Yongwang said: "However, resonance is generally caused by the engine, and the gearbox. what is the relationship?"

"Any kind of object will have a resonant frequency. In Europe, a troop was walking across the bridge, and the bridge collapsed because the frequency of their walking happened to coincide with the natural frequency of the bridge." Qin Shaoyou said: "Now, the third gear in the gearbox is also the problem."

Because a small gear resonated and made the whole car vibrate, the big guys had never heard of it, so Qin Shaoyou talked about stepping on the collapsed bridge and told them that the power of resonance is very powerful.

"If I remember correctly, the meshing frequency of the third gear is 695 Hz, and the natural frequency of the case of this gearbox is about 3000 Hz, but after this patch is applied, its natural frequency is reduced. Now, there is no professional equipment, and I have no way to measure it. It is estimated that it should be 2085 Hz, which is three times the frequency of the gear, so that it causes the resonance of the gearbox."

After Qin Shaoyou spoke professional data, Zhao Mingming's eyes were full of admiration. This is definitely an expert level. Don't look at Qin Shaoyou's young age, he is really amazing!

"We welded another patch, which changed the natural frequency of the gearbox casing?" Liu Shengli followed Qin Shaoyou's train of thought: "In this way, the vibration problem is solved?"

"Actually, generally patching is not so coincidental. The failure of patching to cause resonance is [-] in [-] or even lower. It is almost the same as the chance of winning the jackpot when buying a lottery. Let's patch it again to avoid it. Resonance, there is no problem." Qin Shaoyou said: "Of course, I can also try my luck to repair this gearbox."

"It's not just luck." Zhao Ming said, "We've never heard of what you just said. It's too professional. Moreover, your method really works. I, Zhao Ming, admire the capable people the most." Man, just now, judging from your young age, you probably don't have much experience, so your words were a bit aggressive, and I hope you don't care about it."

"It's getting late, let's go out to eat!" Luo Yongwang was also very happy: "Master Liu, if you don't have time in the future, let Xiao Qin come over by himself. If there are any intractable diseases, I will leave them to him. As for the salary, every time I come, 200 yuan!"

200 yuan!This was the early 90s. Qin Shaoyou, an apprentice, earned only 98 yuan a month. Once he came here, he could earn 800 yuan. If he came here four times a month, he would earn [-] yuan. He was definitely a blue-collar worker with a high salary!

As he said that, Luo Yongwang took out 200 yuan, but he was a little embarrassed, not knowing who to give it to.

"Uncle Luo, I came here with Master Liu. I'm his apprentice. Today's repair fee is for Master Liu." Qin Shaoyou said.

Liu Shengli was very satisfied: "Xiao Qin, although I brought you here this time, I didn't do anything, and the fault was repaired by you, so you can collect the repair fee. I also recognize you, and I will not come here in the future, you will come over every now and then to see if there is any fault, and help to fix it."

"That can't be done, Master Liu, I can't let you make this trip in vain. I'm your apprentice, and I haven't graduated as a teacher yet. An apprentice should work for the master. How can I keep the reward alone?"

"I didn't run in vain. Isn't this going to eat and drink soon?" Liu Shengli said, "Xiao Qin, you can take this money and buy a bicycle when you have time. Otherwise, it will be inconvenient to go back and forth. Go, now Go to the restaurant!"

Near the AEON auto repair factory, Liuji restaurant, several people sat around a table, eating and drinking to their heart's content, pushing and changing glasses, and they became familiar with each other after a few glasses of wine.

Halfway through drinking, Qin Shaoyou went out to release water, and after fertilizing the big trees outside, he just wanted to go back and continue talking nonsense, but he heard the bicycle bell ringing lightly, and then a person's voice rang.

"Xiao Qin, why are you here?"