Traveling through the sword to engage in military industry

"After digging the hole, leave some margin for adjusting the angle. The thickness of each layer of wooden planks and hoops corresponds to a 0.5-degree angle change. We have five layers of wooden planks and hoops to adjust, which means leaving 2.5 degrees for on-site angle adjustment, corresponding to the maximum range, roughly a difference of 30 meters."

At the test site, Ren Zhong briefly described his improved 'Conscience Cannon' to Li Yunlong. It's simple: he made layers of wooden hoops around the outside of the oil drum. This doesn't do much for tightening, but it can slightly change the angle of the gasoline drum.

Compared to the old method of having to dig the gasoline drum out of the ground to adjust it, this is much faster and the degree of standardized operation is much stronger, greatly reducing the learning cost for the gunners.

Now, Ren Zhong's improved 'Conscience Cannon' uses wooden hoops made to a standardized size according to the oil drum, produced with a 0.5-degree angle change as the standard.

For digging the hole, Ren Zhong also created a triangular template gauge from 35 to 45 degrees, replacing the previous method relying on experience. After choosing an angle based on the distance, a slanted hole is dug according to the corresponding angle on the triangle. The hole is widened appropriately to allow the gasoline drum wrapped in five layers of wooden hoops to be lowered in. Then, the soil is backfilled and compacted. In this way, removing one layer of wooden hoops will reduce the angle by 0.5 degrees, obviously shortening the distance.

This is a fine-tuning that Ren Zhong made based on the range error of the 'Conscience Cannon'. Quickly changing the wooden hoops can cover a 30-meter distance, which is a very important adaptability improvement for trench warfare and attacking pillboxes.

Although Ren Zhong is a liberal arts student and not good at calculating parabolas, he has a good brain. If the accuracy isn't enough, we can make up for it by adjusting the angle!

The latter has a shorter trajectory but is extremely lethal, suitable for close-range attacks in trench warfare. One shot can wipe out a large area of the enemy's heavily defended position! The power is at least comparable to the killing power of a 120mm howitzer! Even comparable to a 150mm howitzer in special terrain. The TNT charge of a normal 155mm shell is only 7 kg, but their explosive power and shrapnel damage range are greater.

According to tests, under the No. 1 charge condition, a 5 kg explosive package fired at the maximum angle can be launched at least 120 meters away, while using the No. 3 charge, a 5 kg explosive package can be launched at least 250 meters!

Why is it stuck at this distance? This is based on two considerations. One is the combat requirement, because now when the Japanese devils build pillboxes, they stipulate that within a 200-meter radius of the pillbox, there are no allowed civilian houses, forests, and tall farmland, all of which are military alert zones, which is also to ensure clear visibility.

After Li Yunlong proposed the pillbox data, Ren Zhong and Wang Chengzhu adjusted the propellant charge and figured out the No. 3 charge amount, which can basically launch a projectile 230-260 meters away.

The other aspect is based on safety considerations. The more propellant charge, the less safe it actually is, and the easier it is to cause a barrel explosion. Moreover, the explosive package shape design is very limited. Even if there is more propellant charge, it is difficult to break through the 300-meter range, so after Ren Zhong and Wang Chengzhu experimented for a period of time, the maximum range was set to 250 meters.

The weight of the No. 2 large explosive package is also fixed at 10 kg. At this weight, using the No. 3 charge, achieving a horizontal launch of 120 meters at the maximum angle is not a problem. Because the angle of the 'Conscience Cannon' cannot be precisely fixed, it can only be roughly like this. Plus, there are now 2.5 degrees of wooden hoop adjustment opportunities. After Ren Zhong's improvement, the 'Conscience Cannon' has actually far exceeded similar products in history in terms of safety, ease of use, and power.

After a short period of learning and several on-site tests of the explosive power of the explosive package, Li Yunlong quickly mastered the characteristics of this new type of cannon. For Lao Li, it is enough to master the launch distance and the explosive power.

"Brother Ren, with your 'Conscience Cannon', this time I'll show you what it means to catch a turtle in a jar with ease."

After personally observing the explosive effect of the 'Conscience Cannon' once, Li Yunlong looked at the large crater blasted out by the explosive package that directly hit the designated kill zone, his mouth almost reaching the back of his head, and he said to Ren Zhong with great confidence.

"Lao Li, this thing is very unsafe. Gunners who don't need to light the fuse should try to quickly move 20 meters or more to the rear after lighting it and lie down. In case the explosive package explodes directly, the killing range of our launch site will be at least 20 meters in radius, which is very dangerous."

Seeing that Lao Li was very satisfied with the 'Conscience Cannon', Ren Zhong couldn't help but remind him, "Under actual combat conditions, it is necessary to prohibit deploying soldiers near the 'Conscience Cannon', and even more so, not to allow officers to personally operate the ignition."

Ren Zhong checked a lot of historical data. This 'Conscience Cannon' can be called the poor man's guerrilla heavy artillery, causing significant casualties to the enemy. However, due to the simple principle and rough manufacturing, the safety is also quite poor. There were many times when accidents happened and their own people were blown up. Although it has been improved by Ren Zhong to some extent, Ren Zhong still has no confidence.

It's a bit like the Seven Injury Fist in martial arts, hurting others and hurting oneself. Now, as long as there are other options, Ren Zhong would not recommend Lao Li to use this.

It's a pity that now, let alone cannons, even the Type 56 rifle, Ren Zhong hasn't figured out how to equip Li Yunlong with a production line.

It is too difficult to complete the production of rifle parts with manual machine tools. Ren Zhong can't directly bring electric machine tools over. Now Ren Zhong is trying to make a miniaturized machine tool for the Chengxin Machinery Factory, with a modular design that can be disassembled for easy installation, and the core components are required to have a maximum weight of no more than 60 kg.

Grandpa Cao and his three apprentices are very interested in this small machine tool "oriented to the Third World, modular, maintenance-free, and low-cost", and feel that there should be a lot of market space. They are now optimizing and reconstructing a machine tool from the 1960s. The base of the machine tool is an iron casting, which should be cast locally, and any cast iron can be used.

To make the core structure of other machine tools durable, special tool steel must be used for processing, so that cutting, drilling, milling and other work can be completed.

"It doesn't matter, we know how to use it. Brother Ren, don't worry, it will only be the Japanese devils who suffer."

Lao Li smiled indifferently.

Just kidding, this is much safer than letting people hold explosive packs to blow up bunkers and pillboxes. Li Yunlong knows how to choose almost without comparison.

Ren Zhong shook his head, knowing that with this thing out, Li Yunlong's original intention to huddle up and develop for a while has now become restless.

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