Chapter 547 (1/2)

Ever since he met the land otter of variant grassland in Ji tribe, ye Xi has been thinking about what weapons can effectively kill this giant.

They are too big, and the bone knife and spear stab on them just like stabbing them. They don't feel any pain. Even the venom attacks very slowly.

Making gunpowder?

However, it is not just knowing the composition of black powder can make super cannon, super bomb.

After thinking for a long time, ye Xi finally chose the catapult, a masterpiece of the cold weapon era.

Catapult, to be more precise, is a kind of lethal weapon which relies on the torsion spring to drive the arm of the crossbow to drive the bowstring. It has a huge strike power and accuracy, even in a few hundred meters away, can accurately penetrate the body of the enemy through armor.

Of course, its structure is also more complex, and ye Xi only read history books by chance, without in-depth study, so it is not easy to make it.

After drawing the general structure of the catapult, ye Xi held the charcoal pen and repeatedly revised, modified, and modified on the parchment scroll.

From day to night.

In the dim candle light, the crossbow's main beam, bracket, torsion spring group, long slot, ratchet, winch The dimensions of the structures are determined one by one.

Ye Xi came out of the house with drawings, and gathered more than 30 people, including Pingyao, Boshan, Luojia, and so on, to form a team specializing in the production of catapults.

Half a month later, the first giant catapult was born.

The giant catapult is five meters high, and its main material is black wood with curved grain. Its power is amazing. It can shoot stones weighing up to 50 Jin, and accurately hit the elk running 300 meters away, smashing the internal organs of the elk away from the body.

However, this is not enough. This is a prehistoric and wild world. What they want to kill is not elk, but a huge mountain beast. The power of the catapult needs to be further strengthened.

Seven days later, a second improved version of the giant catapult was born.

The larger catapult, which requires four people to work together, no longer uses the torque produced by the mane of a large hyena, but instead uses the tendons of a more resilient bull.

What's more, it is a kind of catapult specially used for casting bronze spear. The diameter of torsion spring and the length of spear body are calculated strictly, so it can project the huge spear more accurately.

This time, the bronze spear projected more than 500 meters away, successfully hit the running milu deer, and broke through the five centimeter thick stone slab tied to the elk and killed it.

The crowd cheered.

This giant catapult was amazing for their power and accuracy.

How could they have thought of such a powerful weapon before! What's more, the catapult doesn't need to be operated by soldiers. Only a few ordinary people can drive this killing machine!

If there are any more monsters attacking Xicheng, maybe you don't need to use the magic spell!

However, ye Xi's face did not show much joy in the roar of thunder. When people stroked the catapult in amazement and tried to shoot again, ye Xi quietly left the test site.

The catapult test was carried out in secret, and the test site was in the deep forest a few miles away from Xicheng.

Pingyao first noticed Ye Xi's departure and immediately chased him up: ”master Xi, is there something wrong with this catapult?”

Ye Xi stopped and said truthfully: ”the speed of bowing is too slow. If the giant beast attacking Xi City is very fast, it will rush to our eyes before we attack with catapult!”

Pingyao was stunned.

Yeah How could they forget that.

Ye Xi rubbed his eyebrows and said, ”I'll think about it again. If you have any good suggestions for improvement, please report to me at any time.”

Primitive people were not good at designing such complicated instruments, so the design of catapult basically depended on Ye Xi, who was a little tired and fidgety after working for days.

Back to Xicheng.

Walking along the lake, I found that there was a sound of jumping into the lake.

He stretched out his limbs and swam freely in the lake. The clear water slowly smoothed his anxiety and fatigue.