That's right, a lighter steel skeleton is used, pneumatic rubber tires that reduce drag, and a spring damping system.

Their carriage can weigh three tons in one car.

Of course, this is the limit situation, and if you load 2.5 tons, you can ensure that the horse and carriage are in the best condition.

Even on unpaved roads, the speed can reach 20-30 km/h.

Of course, if it's raining and the roads are muddy, the speed can slow down to 10 km/h or even less.

But this is also far more efficient than the previous use of wooden carriages for transportation.

So when Yang Yinuan came back this time, he directly found those manufacturers last time, and placed orders to customize a large number of carriages.

And this kind of carriage has the highest requirements for daily consumables, which are naturally tires.

This time, Yang Yinuan's customized carriage was to meet the purpose of increasing the carrying capacity and reducing the resistance.

In addition to requiring manufacturers to use lightweight designs, manufacturers are also specifically required to increase the design of thickened wheels.

And this new carriage wheel is just right to use the small tires of some small cars.

And with such tires, naturally, there is no need to buy new ones.

After all, they drove horse-drawn carriages, not cars.

Nowadays, cars can generally drive to an average speed of forty or fifty kilometers per hour on urban roads.

If you go on the highway, you can drive a high speed of more than 100 kilometers per hour, so the requirements for tire strength are very high.

Because once a flat tire occurs at high speed, it is likely to lead to the occurrence of a car crash and death.

Therefore, the current car has very strict requirements for the elimination of tires, if it is the previous tire.

Basically, in five or six years, the tire pattern is smoothed out, in order to ensure the grip of the car when driving at high speed.

Such tires must be returned.

But in fact, such tires are absolutely enough for Yang Yinuan and their carriage.

Yang Yinuan's carriage running in the other world, most of the time, the average speed is only twenty or thirty kilometers per hour.

At such a speed, you will naturally not be afraid of a flat tire like a car, so you don't have to worry too much about the problem of a flat tire.

Moreover, most of the tires used in cars are radial tires, and the sidewalls of the tires are made of steel wires.

For cars that often drive at high speeds, after three or four years, the tire life is up, and it is time to eliminate new tires.

After all, often driving at high speeds, the friction between the tires and the ground will often be in high temperature conditions.

It will accelerate the aging of rubber tires and may increase the risk of punctures at high speeds.

But for those carriages customized by Yang Yinuan, this kind of second-hand tire is definitely more than enough.

After all, their carriage was only 30 kilometers per hour at a 'designed top speed'.

And most of the time, you can't run that fast at all.

Moreover, this radial tire, because there is a steel wire in the sidewall of the tire, can more effectively protect the wheel on the non-paved road.

The pattern on the tires, even if it was a little flat, was enough for their carriage.

This is the main reason why Yang Yinuan purchases a large number of these second-hand tires.

The price is cheap and the quantity is sufficient, and there are so many benefits.

And these waste tires, in addition to being used as wheels, have another very important use...

That is, it can be made into armor!

Most of these obsolete tires are radial tires, in order to prevent the car from bursting at high speeds.

The inside of the tires has been specially reinforced, such as the use of thick vulcanized rubber on the front as a cushioning layer.

Inside, a wire harness is added as a lining to reinforce the tire.

Prevent the wheels from being punctured by sharp objects when the car is driving at high speeds.

And now some high-end tires are also added to the aromatic yarn instead of steel wire, so that the tire is stronger.

In general, after these tires are recycled, they are shredded and then recycled in various ways.

But if you get it to the Otherworld, this thing is simply a suitable raw material for armor!

Think about the front of these tires, and a puncture will only occur if there is a frontal high-speed collision at a speed of tons.

If a sharp object wants to puncture this kind of tire, it also needs a very sharp awl, or iron nail, under abnormal friction and squeezing, it may pierce the inside of the tire.

And if you take the tire for testing, cut it with a knife, or pierce it with a spear, you will see how difficult it is to break such a tire.

So this time, Yang Yinuan directly ordered tens of thousands of waste tires from the hands of Boss Hu.

This made Boss Hu's face swollen with happiness.

It didn't cost much to recycle these tires, and I thought I would have to hold them in my hands for a while.

I didn't expect to be accepted by this boss in a few days.

And the price is also quite ideal, depending on the size of the tire, as well as the degree of wear of the tread.

For tires of different specifications and new and old degrees, the basic price ranges from 5 to 40 yuan.

In the end, the average price was around 20 yuan.

10,000 scrap tires are directly 200,000 to hand.

This made Boss Hu very happy, and even Boss Geng next to him was happy.

After all, the person was introduced by him, and every time this Boss Hu makes a business, he has a commission.

Next, Yang Yinuan bought hundreds of barrels of waste engine oil from the hands of this Boss Hu.

These oils were purchased back, on the one hand, intended to be used as fuel, and as building materials.

On the other hand, a part of it is recycled and made into lubricating oil.

In fact, the principle of reusing these waste engine oils is very simple, which is nothing more than adding calcium carbide slag waste for stirring after pickling.

Then adjust with sodium hydroxide, and finally you can get the newly refined engine oil.

Of course, a large amount of asphalt and other waste materials will be generated in the middle.

This method is banned in the modern world because of its high pollution.

But there is no need to worry at all in the Otherworld, what is most lacking in the Otherworld is the waterproof material of asphalt.

So Yang Yinuan pondered to get some back and refine some of the lubricating oil out of this thing.

After all, they built so many carriages, and the wheels and bearings of these carriages always needed regular maintenance.

These lubricants are just enough.

In addition, asphalt can also fill in the gaps between the roof and the top of the city wall.

It can ensure that the building is more waterproof, and if there is a surplus, it can be used to pave the road.

After he goes back this time, he plans to build a few more roads in the Thousand Mountains Ranch.

Control the entire ranch with an effective link, and then set up settlements along the road.