Li Hanyang's whole person was immersed in the state of mind of manufacturing, and he forgot to sleep and eat.

"Assuming that the stiffness of the bow piece is strong, then the angle of the bowstring at a full bow is theoretically 90 degrees...... From this, it can be estimated that the angle between the bowstring and the blade should be maintained at an angle of 45 degrees when the bow is not opened. Then the bow is released after the full bow, and the energy storage push is shortened by 3 degrees, and the muzzle velocity of the arrow will increase by at least 9 thousandths. ”

"Pursue muzzle velocity, and the penetration will be greater when the arrow falls......"

Li Hanyang measured the bow tire and hurriedly marked the key points on the drawing.

"The circumference of the ellipse should be ......"

"Holes should be made at both ends of the bow and fixed with rivets or screws to install eccentric wheels. It's a pity that there is no welding technology in this world...... No, it doesn't even look like there are screws. ”

Li Hanyang covered his forehead and sighed: "I'm depressed." ”

Once the accurate data of the eccentric wheel is obtained, the next step is to calculate the number of pulleys required.

If the eccentric wheel uses the principle of lever to save effort, then the role of the pulley is to increase the energy of the bow and arrow.

Equipped with eccentric wheels, if not equipped with pulleys, then the effort is saved, but it affects at least five percent of the energy of the bow and arrow, because there is friction.

With an eccentric wheel, you need to use a bowstring cross set. When the bow is drawn, the bowstring is crossed and tightened. When released, the bowstring will have a huge friction with the eccentric wheel and the bow blades, as well as the bowstring itself.

This friction causes the bowstring to block, which causes energy to drain.

"The purpose of the pulley block is to use the bowstring to rub against the round pulley to minimize this friction. Having a pulley block will reduce this energy flow to one hundredth, or even six thousandths or seven thousandths. ”

With a mutter, Li Hanyang added pulley data to the drawing.

At this time, it was three poles on the moon, and it was already dark outside. And Li Hanyang didn't feel any time passing, and the whole person was immersed in the pleasure of "creation".

The drawings are two or three pages long. The first page is a sketch concept of the finished composite bow, and the second page is a detailed picture of the eccentric wheel, as well as pictures of the parts. The third page is a picture of the disassembly and disassembly of the pulley block.

Thoroughly done.

Stretching his waist, Li Hanyang breathed a sigh of relief: "All the design work has been completed, no matter how big or small. Then there's the relatively simple manufacturing process. ”

'Buzz'

Turn on the angle grinder.

In the inn late at night, the angle grinder rang all night.

Countless residents scolded their mothers:

"Who's the hell?"

"Who the hell doesn't sleep at night, grinding his teeth so loudly?"

"Shopkeeper, you don't care? Who is snoring? It's like this. ”

"Buzzing, who is this, born with divine power, grinding teeth so loudly?"

"I'm afraid I'm talking in my dreams, right? There are ventriloquists in Beijing......

“......”

The next day, the sun rises three poles.

Li Hanyang stretched his waist, and the whole person was so tired that he was in a trance.

Looking at the two strangely shaped oval discs on the table, he sighed: "The eccentric wheel is finally ready." Fortunately, I have an invincible angle grinder, and if I grind it by hand, I will have to get it until next year. Hehe, it's okay, it's more complicated, so that others can't pirate my compound bow patent. ”

After thinking about it, Li Hanyang used an angle grinder to engrave a few words on the eccentric wheel - made by Hanyang.

Looking at his masterpiece with satisfaction, Li Hanyang washed his face and hurriedly went to bed: "There are only two sets of pulleys left." There's still plenty of time, so I'll get it when I wake up. ”

“......”

At the same time, the other brothers who took over the task were going crazy.

Each one was crazy, and his eyes were red and red.

"Oh my god. Why is this bow so difficult? ”

"200 pounds, how do I know how the bow piece can reach 200 pounds. ”

"Ahhh How can you calculate it, the pulling force of the bow is 200 catties. ”

"Hey--what am I going to do with this bow? Steward Liu is really not a thing, what do you do with so much strength, you have to be 200 pounds. ”

"Woo woo woo, I'm going to collapse, I want to quit okay. I'm desperate, I can't get a 200-pound bow tire at all...... Even if I mess around with a powerful bow tire, how can I know if it has a pull force of 200 pounds. I don't have that much strength myself, how can I test how many pounds it has. ”

“......”

Poor children.

Even if some people think of using the form of bamboo chips to make bow pieces, but they can't think of how to make the shape of the bow tire. Because you can't hold it with your hands.

Even if these problems are solved. The poor children could not imagine how to test the strength of the bow......

The science and technology of this world are relatively primitive, and they do not have as accurate data concepts as Li Hanyang. They would never have thought of extrapolating variable data using a constant standard......

The tensile force is calculated on the earth, and there is a special tensile table to calculate.

According to this principle, Li Han** used a weighing stone to calculate the tensile force of a piece of bamboo of the same specification, and then did a division calculation, and all the data he needed came out.

But...... Except for Li Hanyang, no one else can think of it. Don't make a bow and arrow, that's not a spectrum, it's to know how much strength you have, and then try it yourself to get a rough estimate. It's so far behind.

No way, who made them not study mathematics, physics and chemistry?

Learn mathematics, physics and chemistry, I am not afraid to go all over the world, and the junior high school teacher will not deceive me. When he came to the cultivation realm, he could continue to shake his majesty.

————

Another day passed.

Li Hanyang looked at the finished product of this compound bow, groped his chin and looked at the three big words 'made in Hanyang' on the eccentric wheel, and was very satisfied.

"Although it looks a little weird, it is a combination of two bows, but ...... It also has a mechanical aesthetic. Well, not bad, not bad. ”

"It is said that the masters of the awesome will engrave their names on their works. It doesn't seem wrong for me to make a reputation as 'made in Hanyang'. ”

It's just that Li Hanyang always feels that Hanyang makes these three words, why is it so familiar?

22 pieces of the bow, divided into two parts. 11 pieces of the bow make up a bow, the bamboo pieces are glued with diluted gum and tightly wound together on the outside with ropes. The two bows merge together to form this strange compound bow. There is a handle in the middle, and when you hold the bow, it is called comfortable.

If you use a knife to cut down the middle, the compound bow can instantly become two separate bows. It can be described as ...... Originality.

"Delivery!"

Li Hanyang smiled proudly, wrapped the strange compound bow with silk cloth, put it on his back and headed back towards the Lingyun faction.

Today is the third day.

Walking to the foot of Lingyun Sect Mountain, Li Hanyang suddenly thought: "That's not right. I'm so awesome, why should I be the first to go up? Although it's the third day, the time limit should be before dark, right?"

"So many brothers and sisters haven't gone up yet, I don't have any impact when I go up in advance. ”

"Well, awesome me, leave yourself in the finale. ”

Li Hanyang thought in his heart, so he carried the compound bow he built on his back and found a grass cat to go in. I looked at the bright sky and dozed off leisurely.

It's a good location, and you can see the whole picture.

You can see if there is a senior brother going up the mountain, and you can also vaguely see what is going on the mountain at the outer gate, and whether there is a large area of commotion or something.

Chewing a piece of grass in his mouth, Li Hanyang lay in the grass and dozed off, observing the way up the mountain, while sitting and waiting......

Sit back and wait for the sky to explode, and Lao Tzu will make his debut!