Development of productivity started in 1981

Chapter 10: Good feedback, continue making guns
Yu Jianmin came to the blacksmith shop at dawn the next day. It seemed that he really liked it, as he usually arrived around 8 o'clock.

The bullets made yesterday were not polished with sand because it was too late, so Yu Jianmin took over this job while Wang Jiankun and Cha Xiaoming got up and washed.

Then the three of them came to the river, found a place with a big willow tree in front and no one passing by, and prepared to test the guns.

While Wang Jiankun was loading bullets, Cha Xiaoming ran to the willow tree and took a stone to draw three concentric circles.

A magazine can hold 20 bullets. Wang Jiankun walked to 20 meters away from the willow tree and started trying. The first shot hit the willow tree, but did not hit the concentric circle.

Although he was aiming at concentric circles, Wang Jiankun took into account that the trajectory would fall downward, so he raised the muzzle slightly. He did not expect that the gun was so powerful that the trajectory was relatively straight within 20 meters.

So the second shot lowered the muzzle height and aimed at the top of the outermost circle. When the trigger was pulled, a small hole appeared within the concentric circles of the willow tree.

Continue to press the air and pull the trigger, and the third shot hits the smallest circle.

Yu Jianmin and Hu Xiaoming, who were standing nearby, were anxious and asked to be allowed to fire a few shots as well.
Yu Jianmin was the first one to take the gun. He followed Wang Jiankun's movements, compressed the air, aimed, and pulled the trigger. The object flew away. The willow tree did not move. Yu Jianmin was not in a hurry. He adjusted himself and shot the next shot near the concentric circles. The third shot hit inside the circle.

Seeing that Yu Jianmin was going to continue shooting after the third shot, Cha Xiaoming became anxious and shouted: "It's my turn, it's my turn."

So Yu Jianmin handed the gun to Cha Xiaoming, who also tried three shots at 20 meters, and the second and third shots also hit the target.

Wang Jiankun took the gun and tried it at 30 meters, 40 meters, 50 meters and 60 meters respectively. At 40 meters, the power was quite strong and the bullet could penetrate completely into the willow tree. At 60 meters, the bullet could only penetrate a few millimeters and sometimes could not be fixed and would fall off.

It seems that the effective range is 40 meters. Beyond 40 meters, the power and accuracy will slowly decrease, which is consistent with Sophon's simulation calculations.

Wang Jiankun was already very satisfied. This gun had two major advantages over Cheng Hongbing's. One was that it had a magazine for feeding ammunition, and the other was that it was powerful and could hit far.

I'll go find Cheng Hongbing and the others at noon and ask them if they want to buy it.

Wang Jiankun let Yu Jianmin play with the gun first and asked him to take it to the blacksmith shop later. He and Cha Xiaoming were going to have breakfast.

After breakfast, Wang Jiankun, Master Quan and Uncle Bing came to the blacksmith shop together. They saw Yu Jianmin and Cha Xiaoming playing with air rifles. Uncle Bing and Master Quan took them and had a look. They found that they were made quite delicately, so they praised the three of them. However, the two of them did not think about playing with them because they had touched guns enough in the past few years. At that time, the militia team would conduct live-fire shooting training every month.

Wang Jiankun and the other two stopped playing with guns. Work was still the top priority. He didn't want to get any special treatment as he couldn't let Master Quan think that he had led the two apprentices in the blacksmith shop astray.

At noon, after lunch, Wang Jiankun went to find Cheng Hongbing. Cheng Hongbing was surprised to see that he was also carrying a gun.

He asked, "Jiankun, where did you get that gun? It looks even cooler than mine."

"I made it with the tools in the blacksmith shop. I'll show you how powerful it is. Do you want to try it?"

"Of course, show it to me."

Wang Jiankun first demonstrated how to load bullets, compress the gas and fire the gun, and then went to the yard and fired a shot.

Cheng Hongbing took the gun, compressed the gas, aimed and pulled the trigger. The target opposite shook for a while. He was a little surprised at how powerful it was.

He hurriedly asked, "Have you tried the effective range?"

"The effective range is 40 meters, but the power at 60 meters is also good, and killing a small bird is not a problem."

"That, by air rifle standards, means it has a range of 60 meters, which is better than my gun."

Wang Jiankun was not modest and said, "That's right. Not only is it powerful, but it's also easy to load. It uses a magazine to automatically feed bullets, and it saves effort to compress the gas."

Cheng Hongbing tried a few more shots and also went to an open area at the door to test the shooting range. He found that it was indeed as Wang Jiankun said, the bullet could penetrate the wood at 60 meters, so it would be no problem to kill the bird at this distance.

So he asked, "Jiankun, since you can make one, can you make one for me? How much does it cost?" Wang Jiankun said, "My gun is better than yours in terms of power and usability. It should be more expensive, but you lent me your book and asked me to make bullets to earn extra money. I'll give you the same price of 80 yuan. Let's be friends."

Cheng Hongbing felt very useful after hearing this, so he said: "Okay, I'll make friends with you. How long do you think it will take you to make the gun for me?"

Wang Jiankun did not answer directly, but asked: "Brother Cheng, can you please ask your friends if they want this gun? If they want it together, I can make it faster. I will also give you 100 rounds of bullets for each gun. I can also provide the mold for the bullets, but the mold will cost an extra 5 yuan."

Cheng Hongbing said, "Then I'll go down and ask. Leave your gun with me first. I'll give it to them for trial and see how many people want it. After asking, I'll go to the blacksmith shop later and tell you."

"That's fine. I feel safe leaving the gun with you. I'll go back to the blacksmith shop to prepare the materials and molds." After saying that, Wang Jiankun went back to the blacksmith shop.

In the afternoon, I continued to take turns with Cha Xiaoming to pull the bellows, because this job is the safest and allows for rest.

During the break in rotation, Wang Jiankun found Master Quan and told him that they wanted to make a few guns. They would work together to cast the sand cavity at one time, and then pay the materials to Master Quan.

Master Quan nodded and said, "You are quite smart, go ahead and do it. If you have nothing to do, just help me think of some new products that my blacksmith shop can make. I will pay you for the materials at cost price."

Seeing that Master Quan gave such great support, Wang Jiankun quickly expressed his opinion: "I have also been reading mechanical knowledge in college these days to see if I can come up with any good ideas."

In fact, Wang Jiankun had already come up with a good idea, which was to make a table clock.

Some production teams have been building new houses one after another, so they must add something, and a table clock is the most practical one.

Buy one and place it on the altar in front of the hall. It is not only a decoration, but also can tell time.

It is sold in the supply and marketing cooperatives. Maybe because the place of origin is far away from Wuyuan County, the price is very expensive, costing 60 yuan each.

Wang Jiankun used his superpowers to study it and found that it was just a wooden shell and a piece of transparent glass on the outside, three pointers and a dial, three springs, several gears and a rocker inside, and a knocking component.

The three springs and several gears are a little difficult.

If mass production is carried out, the gears can be cast by the lost wax method and then finely ground, and the springs can be cold drawn and cold forged by manganese steel.

In the afternoon, Cheng Hongbing came to the blacksmith shop and told him that there were a total of six people including him who wanted guns. Wang Jiankun thought about it and gave a delivery deadline of three days.

Cheng Hongbing came and left, still not keeping the gun. He asked Wang Jiankun for 100 rounds of bullets, saying he would return them the next time he came to get the gun.

Thinking about the six guns he had to make, he told Master Quan that he would stop pulling the bellows for the next two days, and he thought of a good product, which was to make a table clock.

Give Master Quan the analysis of what you just thought of.

Master Quan was very happy after hearing this, but he was unsure and asked Wang Jiankun to make one first to see how much materials and manpower would be needed.

So Wang Jiankun immediately began to prepare. He first used beeswax to carve the parts of the gun. Since there was not enough beeswax, it was not enough to make a set of parts. After making the sand cavity, he continued to use the recycled beeswax.

In this way, I finished 3 sets of models before leaving get off work.

Wang Jiankun asked Yu Jianmin to help find a carpenter to make six wooden stocks and grips. He said he would use the same drawings as last time. There would be another kind of wooden parts after they were made. If the situation was good, they would be needed in large quantities.

Yu Jianmin said that he would go and tell the carpenter after dinner that it would only be 2 yuan for a set and the carpenter would find a way to get the wood.

Wang Jiankun agreed and asked for it to be done quickly, giving him two days and asking him to meet the day after tomorrow evening.

In the evening, Wang Jiankun, with the help of Cha Xiaoming, made the sand cavity for the remaining three sets, and also made the sand cavity for the iron part of the clock. They can be cast together tomorrow.

(End of this chapter)