One shot a minute, no matter how powerful it is, there is no need to exist, the crossbow currently used in the army, after one to two months of training, ordinary soldiers can fire two shots a minute, but even so, Wei Feng is very dissatisfied!

A skilled archer, dialing arrows, arrows, and opening the bow in one go, plus not deliberately aiming, can shoot six arrows per minute, and the crossbow must reach at least four rounds per minute according to his ideal state, so that he can carry out continuous and uninterrupted saturation attacks, because Wei Feng knows that in the future, due to the absolute disadvantage in numbers, it is impossible for the cavalry to be used as the main force in the early stage, and it is impossible to engage in cavalry fighting with the enemy. Only after seizing the horse breeding land, and after several years of development, can it be possible to fight cavalry battles.

In other words, before the north had a foothold, the cavalry could only be used for assault, not frontal charge, and the infantry was still the main force of battle, so the importance of the powerful and rapid-fire crossbow was self-evident!

It's just that there are only a few people in history who can shoot a strong crossbow like Wei Feng with seven and a half stones with his bare hands, and one of the ones that can be recorded in history is Li Guang, who can shoot arrows into stones, and his strength can be imagined, and the other is Yue Fei, Yue Fei can open eight stone bows!

The so-called eight stones are calculated based on Han stones, if Song stone is used as the unit of measurement, then Yue Fei is not a human, but a superman! You must know that this strangely shaped divine arm crossbow has a strength of about four stones according to Song Shi's calculations, while the original divine arm bow, according to the record of "Mengxi Pen Talk", has a strength of four stones and six buckets!

Wei Feng didn't pay attention to how the guards shot the arrows, but frowned. This makes everyone around the atmosphere dare not penetrate!

Perhaps noticing the abnormal atmosphere in the air, Wei Feng waved his hand and said, "Don't be nervous, come, Ben will ask you, is there a way to increase the rate of fire a little more?" Is it possible to do it at a time of eight or even five at a time? ”

said that he should not be nervous, but as Wei Feng's words fell, the old craftsman fell to the ground with a plop, kowtowed again and again, and said: "The crossbow is either pulled by hand or pedaled, but manpower will eventually be poor, please forgive the general." I've done my best! ”

Wei Feng stepped forward to help the old craftsman. Said helplessly: "Don't kneel at every turn, there will be no blame, how can there be a reason for things in the world to be done overnight?" It is always necessary to grope step by step, when one direction does not work. Is it possible to go in a different direction? Let's say, this god arm crossbow. You've added a torsion spring set to increase your strength to seven and a half stones. Since ancient times, can there be such a powerful crossbow? In fact, this crossbow is already shocking. You say, "But?" ”

"Don't dare, don't dare, thank you for your forgiveness!" Wei Feng's pleasant face made the craftsmen relax a little and humble.

Wei Feng simply sat down on the ground, patted his side, and called: "Sit down, since the divine arm crossbow has no clue for a while, you might as well put it aside for a while, sort out a new idea, and now tell the general about the ballista, how about it?" ”

The craftsmen cowered and sat in a circle around Wei Feng, or the old craftsman, and said boldly: "General Hui, due to the limited space on the ship, only a sample crossbow was made, and the ballista was not made, but we were not idle, the principle of the ballista is similar to combining a bed crossbow with a trebuchet, and the key is the torsion spring group, oh, please wait a minute, general!" ”

As he spoke, the old craftsman called to the side, "Go back to the house and bring the blueprints of the ballista!" ”

A young craftsman immediately rushed away, and after a while, he had already picked up a drawing and handed it to the old craftsman, who spread the drawings in front of Wei Feng, and it was a structural drawing of a ballista, which was much more detailed than the sketch drawn by Wei Feng at the beginning.

After Wei Feng looked at it carefully for a while, the old craftsman gestured and said: "General, you see, the structure of the ballista is similar to the Divine Arm Crossbow, but it is a few times larger, you look at the beam, on the upper side of the beam, we designed it into a long trough in the shape of a dovetail, equipped with a slider with a long guide rail, which can slide back and forth along the long trough!"

There should be a set of firing devices at the rear end of this slider, but the current problem is that it appears on the firing device, there is no way to lock it, you know, whether it is a trebuchet or a bed crossbow, it is forcibly dragged by a thick rope, and then cut off with a sharp axe, due to the huge size of these two, the weight is amazing, the elastic force produced by cutting the rope can almost be ignored, but the ballista is different, the structure is compact and light, if you still use the old method of firing, the elastic force generated is enough to affect the target, in other words, no one can figure out where to hit! ”

The old craftsman looked at Wei Feng and sighed with a face full of shame: "Everything else is fine, you see that the end of this beam can be equipped with a winch, the sergeant by pulling the handle, when the bowstring is pulled back and locked by the firing device, the ballista is in a state of readiness, but this firing device, we don't know how to solve it for a long time, it stands to reason that the idea of the ballista is unique, if it can be developed, it will definitely add wings to the general, but hey~~"

Some of the craftsmen were frustrated, some showed unwillingness, the importance of this set of firing devices can be described as a mountain nine cheng, a lack of achievement, Wei Feng also fell into deep thought, modern people always think that the ancient Chinese in the use of machinery is not as good as the West, but the fact is by no means so!

It is clearly recorded at the earliest that the guide car made by Zhang Heng of the Eastern Han Dynasty and Ma Jun of the Three Kingdoms completely relied on differential gears to make the arm always point to the south, and there was no magnet installed in it.

China's science and technology has been developing steadily in history, only because of the ruling class's emphasis on agriculture and industry and commerce, it has not been transformed into productive forces, but even so, the pace of scientific and technological progress has never stopped, the Han, Tang, Song and Ming dynasties and other great unified dynasties needless to mention, even the Wei, Jin, Southern and Northern Dynasties and the five dynasties and ten kingdoms of the great turmoil period, the same is true, the development of China's science and technology was interrupted in the Manchu Qing Dynasty, no way, the Manchu Qing Dynasty was ignorant and barbaric, and it was a minority ruling majority, and they would be afraid of any new things, and stagnation was the most in their interests.

At that time, gears were fully used in bed crossbows, and the winch was built on the basis of copper gears, which could quickly twist the bowstring to launch a giant arrow out of about 300 steps, but the firing method was still the most primitive axe chop!

This made Wei Feng think of a possibility, in his previous life, as a wanted criminal with bloody hands, it is impossible not to know about firearms, in the trigger of the pistol, the spring plays a great role, then, can you install a spring in the firing device of the ballista, lock it with a spring, and you can use a small force to pull the trigger, without producing excessive elastic force, you know, the bow and crossbow itself does not produce recoil, which has nothing to do with the size of the body, as long as the elastic force problem is solved, it is equivalent to maintaining stability!

Wei Feng turned his head and said: "There is a component called spring, which stores energy through deformation by external force, and after removing the external force, the energy can be released, and the spring can return to its original shape."

Wei Feng not only talked about it, but also made the craftsmen quickly understand the working principle and possible uses of the spring through drawing, and their emotions suddenly rose!

As soon as Wei Feng shut up, the old craftsman took over and said: "General, we can try to put the spring into the firing device, about half a month or so, we should be able to make a sample of the ballista, please rest assured, everyone will go all out!" ”

Wei Feng nodded, as if he had thought of something, and said, "By the way, the ballista and bed crossbow can be wound with a winch, so can you add a small winch to the Divine Arm Crossbow?" You can give it a try. (To be continued......)