Chapter 237: Ada's runner rifle

When the emperor was almost ready, he sent someone to Orich to inform Marin that he was ready to take the two Mongolian doctors to Switzerland for a "rescue". So Marin began to prepare ...
Marin was selecting his men and steeds, and when he was about to leave, Da Vinci, who had been researching a revolver gun in Denberg, suddenly came to Orich ...
"Oh, it's Ada! I haven't seen you for a long time. How are you recently? By the way, do you still keep that fat girl?"
Leonardo rolled his eyes, and Marin didn't open any pot. As for the fat girl, Da Vinci had been sent away. After all, it was just a prostitute.
"Master Baron, I am back this time because I have completed the task you entrusted to me ..."
任务 "Task? What task?" Marin didn't respond. But soon, he was full of surprises:
"You mean, your revolver rifle was successfully developed?"
嗯 "Huh-that's of course ..." Da Vinci looked proud. But soon, Marin's blow came:
怎么 "Why so slow? It's been a year ..."
"Your kid, I thought it would be so easy to develop a machine? It took months to test it alone. During that time, I also blasted a lot of gun barrels. Just the gun barrel selection, I tested for a long time ..." Da Vinci angered No more honorifics.
"The barrel is so difficult to develop? Is it safe to be thick?" Marin wondered.
"It's not the trouble you're looking for? You say this is a cavalry-equipped gun. Naturally, the lighter the better. So, I had to control the thickness of the barrel as much as possible. It's really troublesome. You asked for a barrel length of 50 cm and the weight of the gun was not enough. More than 3 kg ... If not for your demanding conditions, the musket can be developed in a few months ... "
"I forgot to mention these conditions ..." Marin was also a little embarrassed. At the beginning, these conditions were all proposed by Marin in order to form a "black shirt knight". Cavalry uses guns, of course, to pursue portability. Because, "Black Shirt Knight" will bring several of these guns. If they were all that heavy, the warhorses would be too much.
In addition, Marin asked Da Vinci to use more powerful granulated black powder. Therefore, if the barrel is thinner, it is easier to blow the barrel.
Fortunately, Da Vinci was more cautious. When testing the barrel of the gun, he sent prisoners to test it and did not go to the battlefield in person. But this also led to the bomb test phase, seven or eight criminals were blasted ...
However, in the early days, Da Vinci and his artisans used gun barrels made of pig iron and blasted frequently. Later, Marin remembered that he had a team specializing in providing cooked iron ingots to Old John's cannon workshop. As a result, Marin arranged the team that processed pig iron ingots imported from the UK to process mature iron ingots to provide Da Vinci with wrought iron, which solved the problem of easy barrel explosion.
As for the problem of making stainless steel clockwork, it has always been a top issue. Although Marin sent Kohler to Venice to find a supplier of soft manganese ore from Hungary, he has not actually made a purchase. Even if soft manganese ore arrives, Marin cannot immediately produce 65Mn spring steel. That stuff doesn't happen overnight. Even if Marin knew the composition of this spring steel, he couldn't figure it out at once. After all, he is not a steel engineer, and he does not know the process of spring steel. It is said that the hardening of spring steel is also very particular. Also divided into water quenching and oil quenching. Hardening now requires hardening chemicals to strengthen the metal.
Marin certainly does not have quenching chemicals, do not understand the principle, can only choose between water quenching and oil quenching, or find a balance. This requires the artisans to try it slowly, and God knows when it will be done. Just controlling the manganese content of spring steel has been busy for a long time.
So, at this stage, Marin can only choose Da Vinci's plan-let a few clockwork masters invited and tied from Italy, hand-made steel clockwork. The material of all the clockwork is made by the masters with great efforts and repeated forging with pig iron, and the scrap rate is still very high ...
In the end, Da Vinci brought the finished sample gun to Marin, a cost of up to 5 gold coins ...
"5 coins?" Marin called in surprise. A gold coin is worth 60 fennies, 5 gold coins, but that is 300 fennies, which is equivalent to 150 days of wages for ordinary people!
"This is a cost we have studied for several months before trying to control the cost ..." Da Vinci also felt depressed, small stainless steel clockwork, and the cost of artificial construction was too high.
In fact, the cost of stainless steel springs is so high because the people who made them are master craftsmen, ordinary craftsmen, and it is difficult to create qualified steel springs. This job is very level ...
But how high are the labor costs of the masters? They spend a lot of time wrought clockwork there, can the cost be reduced? Therefore, the cost of a revolver rifle is as high as 5 gold coins, and the selling price is estimated to reach 10 gold coins ...
Marlin was a little dizzy. In his imagination, the black shirt knights had to bring 5 of these revolver guns. Does the cost of 5 gold coins cost 25 gold coins per person? This is still the cost price. Converted into a sale price, each person's musket is worth 50 gold coins-extravagant!
As for the performance of the gun, thanks to the efforts of Ada and several master craftsmen, it is quite good. After all, the original version of the revolver rifle was a steel head rubbing a spring steel sheet. If the steel head is rusted, it may not fire. But Marin asked Da Vinci to directly use the steel base to clamp the vermiculite, and the spring steel plate rubbed the vermiculite. The supply of Mars was very stable and the natural performance was good.
In addition, Da Vinci also added a copper shield to the medicine pool outside the fire hole, which can effectively prevent rain. This medicine pool is very similar to the flintlock gun. It is also an iron piece pressed first to prevent the medicine powder from being lost in the bumps. However, when the mainspring of the large musket started to rotate, there would be gears to pull the iron pieces apart, exposing the gunpowder in the pot, waiting for the sparks generated by the steel pieces and vermiculite to sputter into it, thereby igniting the pot and passing through the fire hole. Ignite the charge in the barrel ...
Because of the copper cover, as long as the charge is not affected by the moisture, even if it rains, the gun can shoot freely ...
After all, Da Vinci was a rigorous scientist. When the gun was delivered to Marin, it had been tested for several months, and there were almost no dangerous situations such as bombing.
Moreover, because of the use of granular powder, even a short gun, the effective range of this gun has reached 50 meters, instead of the 20-step (30 meters) used by the black shirt knights in history ... After all, The black shirt knights in history used powder powder that was much less powerful. And Marin used black knights, all of which are powder processed powder, the power is very different.
The is like an early musket, with an effective range of less than 100 yards. However, during the battle period, because the gunpowder was fully granulated, and it was all processed, the effective range reached more than 200 meters.
Of course, this effective range refers to the effective killing distance, not the distance that can be aimed. Because of the bullet of the musket, as long as it exceeds 100 meters ~ EbookFREE.me ~, it will fly in the sky. Those who were targeted by the musket at 100 meters away were unlucky guys with bad luck, and they should have hit it ...
If you use powder powder, Marin tested, the effective range is indeed 30 meters (20 steps). Even so, it is enough.
Because, the main targets of the black shirt knights are the heavy armored knights who have difficulty in moving, or the spearmen who line up the square. After all, both types of arms run slowly and stand as targets.
Even if you want to chase, the black shirt knights are lightly loaded (relative to the plate armor knight), even if they chase, the plate armor knight can not catch up. Those spear infantry could not even catch up.
The black shirt knights, however, could face the plate knights and calmly shoot the 30-gram pellets of the five refilled muskets in their hands and shoot them at the bulky plate knights. You can even escape while shooting back.
Mongolian bow cavalry may need very good archery skills to play the "Mangu 歹" tactics. But the black shirt knight played this trick, but the requirements were not so high. Because, to return to shooting the plate armor knight, as long as the aim is accurate, it does not need too much pull or something, it is most affected by the recoil of the ignition gun, but it can also bear it. Unlike the Mongolian archers, they require hundreds of pounds of pulling force to open the bowstring, which is very demanding.
When the black shirt knight first came out, he relied on the insignificant tactics to directly abuse the French knight into a dog and attacked when it rained. After the French had suffered a big loss, the best countermeasure they could think of was to hire the German black shirt knight to fight against ...
Fiddled with the revolver rifle in his hand, Marin can already foresee the future of using black shirt knights to abuse the French plate knights. However, thinking of the anger and possible revenge of the French afterwards, Marin shivered again, and his heart was very contradictory ...