After the commissioning, a horse pulled two empty cars and ran happily.

The front of the special carriage is a long protruding two poles, made of iron, which hold the war horse in the middle, and the wheels below are tightly connected to the rails.

One is convex, one is recessed, and two are buckled together to ensure that there will be no derailment as much as possible.

But the derailment is really not necessarily accurate.

Except for the first carriage, which was more peculiar, the second carriage was much more normal, except that it was connected to the first carriage and was an equally strange device, and there was a huge iron rod that was fastened to prevent it from falling off.

The horses ran happily, and after a short time, they ran back and forth around the pre-set track, a distance of almost two miles, and the time was indeed much less than before.

But an empty car doesn't mean anything.

This was followed by loading some goods on it, nothing special, just some very ordinary groceries, not particularly heavy.

Filled two large carts and continued the experiment.

The horses were a little struggling, especially at the start, and they could even hear their heavy breathing, but when they started running, they didn't look like they were struggling at all.

Another round trip, about the same time as the first, maybe a little more, but almost negligible, with a new horse.

And the goods on the wagons began to be unloaded, and they were loaded with a more representative cargo, cement.

Cement is in bags, and each bag of cement weighs one stone, which has formed a standard, so it is very good to count.

First he loaded ten bags on each of the two carts, and then let the horses try to pull them down, but found that it was not difficult, so he hurriedly controlled the horses to stop, and loaded five bags in each of the two carriages.

The horses are a little struggling, but it is also at the start, and after running, the strain gradually dissipates.

Needless to say, you can understand the principle, horses are the same as people, when pulling a cart, it is always the most difficult at the beginning, and once you walk, it will be much easier.

The cost of the fatigue dissipating is to continue to be stopped, and then five bags of cement are added to each other.

At this point, the two carts were filled with twenty bags of cement, although there were still enough empty spaces in the carts to fill dozens more bags of cement, but unfortunately, this was already the limit of the horses.

Even with the rails as an aid, the horse could not bear such a weight, it was difficult to start, and then every step was extremely difficult.

But even so, the on-site test situation still broke Lee's perception of horses.

You must know that ancient transportation was not about how much it could pull and how much it could load.

Subject to the pull of horses and other livestock, horse-drawn carriages are often not satisfied, if it is to transport grain, a carriage can only be loaded with ten bags at most, if there are more, either it can't be pulled, or it is to add horses, or a few people follow behind to push.

Thinking about the situation in front of me where one person sits in front of the car and controls the horses, it is simply impossible and will not appear, rather than pulling one more person, it is better to pull one more bag of grain.

This is also why in ancient times, when transporting grain to the border, there would be a saying that there was not one out of ten, and there was not much to pull, and the road was still long, and the ordinary way was not cost-effective at all.

"Your Majesty, a horse can pull up to two carts, forty bags of cement, plus the weight of two carts, which is about sixty stones. Do you think it's an endurance test? Or a one-horse bike, or a two-horse test? "In charge of the railway development project is an old acquaintance Han Fang, who was selected for the first scientific expedition a few years ago, and is also a researcher in the manufacture of waterwheels.

At the beginning, the South Korean side did not follow him to the north, but after staying, the South Korean side did not have a good time, excluding dissidents, and there will be no interruption in any era, and the South Korean side also suffered from this problem.

Just when the Han side was about to hold on and was about to resign, hesitating whether to go home or go north to find the King of Qi, the King of Qi came back with the army.

At this point, the South Korean side can be regarded as re-settling down.

A year passed in a daze, and it wasn't until a year ago that he began to study the railway, he was the general director, and there was also the head of the research of the rails, the head of the research of the carriage, and so on.

"No need, just get on the four horses and five carts." Li Yuanji waved his hand, he didn't have so much time to stay here and watch the test.

The results of the one-horse and two-car tests have already been obtained, and although there are still some improvements, the results are now satisfactory.

According to the original idea, the goal of the railway was to design four horses and five cars.

And the power provided by one horse and two horses, two horses and four horses is not as simple as one plus one equals two.

"No!" The Korean side responded, and he already had confidence in his heart.

In fact, they have secretly tested it a long time ago, not even a test, how embarrassing would it be if the emperor came and failed? They couldn't afford to lose this person, so they had to secretly test it and say that there was no trial.

Where is the limit of four horses and five cars, the South Korean side is also very clear, if you have to find a South Korean side has no confidence, that is, the endurance test, subject to the length of the tracks, so it is impossible for the South Korean side to conduct a complete test.

Soon, four new horses were brought in, and the rails were designed to be wide, at least in the feeling wider than those of later generations, and the two horses could be fixed directly in the middle of the rails, and there was a certain distance.

The other two horses, on the other hand, are fixed on either side and are basically the same as the normal four-horse carriage layout, with some changes in structure and materials.

The horses were quickly secured, and several empty carts parked behind them were connected, one dragging the other, all supported by a steel pillar in between, but not being torn off in vain on the way to pull.

The most extravagant thing about the carriage is that it uses a lot of steel as a material, such as four wheels, and some important parts of the steel are all made of steel, which can almost be said to be made of steel, and then wrapped in light materials such as wood.

Because you need to pull the goods, you don't need to think about the appearance or anything like that, and you don't even have a steeplechase that leaves a hole around it, and when you need to use the steeplechase board, you just get stuck on it.

Naturally, there were not only forty bags of cement to be pulled, but each cart was loaded with thirty bags of cement, so that the weight of the goods reached one hundred and fifty stones.

After the goods were loaded, the man was still in control, and with a flick of the whip in his hand, the horses began to move forward.

The average weight of each horse increased considerably, but this time the start was not at all difficult, and the four horses were once again running happily.

So, it was stopped again, and then it was aggravated, and it was still five bags per car at a time.

When the weight was increased to 200 stones, the four horses showed a difficult posture.

When the weight is increased to 250 stones, it is basically the same as the posture of the previous one-horse and two-wheeled car.

"Your Majesty, depending on the situation, the maximum cargo capacity of four horses and five carts should be about two hundred stones, and if there are more, not only the speed will be affected, but also the durability." The Korean side reported with satisfaction that compared with a single horse and two carts, although the carrying capacity of four horses and five carriages is still forty stones per cart, there is one less horse, so that the four carriages can save one horse, which is still very practical.

"If eight horses pull ten carts, will they pull more cargo?" Li Tao, who was already shocked and not in human form, couldn't help but ask.

Since four horses can pull five carts, and the weight has increased a lot, can eight horses pull more?

"No! Absolutely not! The Korean side refused: "Four horses and five carts are already the limit, and eight horses and ten carts may indeed pull more, but the structure of the carriage needs to be redesigned, and it also needs to use more steel, so it is not cost-effective." ”

"Okay!" Li Tao, who was a little confused, nodded in response while silently clasping his fingers.

An ordinary flat-bottomed boat can carry more than 500 stones, and a larger one can carry 7 or 800 stones. This special meow has three columns, and it pulls more than a flat-bottomed boat.

Li Tao felt a little dizzy, and he really couldn't accept such an outrageous data, although the facts were in front of him, and the unwilling Li Tao even stepped forward to lift a bag of cement and test the weight.

Although it was determined that the goods were not fake, Li Tao was still a little reluctant to believe it.

"Huh? That's not right! After looking at it for a long time, Li Tao, who couldn't believe the result, finally found out the problem, pointed to the train that was speeding at a constant speed, and said, "Why is there only one person in control?" ”

"Now it's a test, everyone can see it, so one person is fine, and when it really runs, a train will be equipped with three people, one is responsible for control in the front, one is responsible for observation in the middle, and the other is responsible for watching the goods at the end, paying attention to the situation of the train, of course, if the people in front are tired, three people can also be replaced." Han Fang smiled and explained, only at this time can he unabashedly despise those bigwigs who are high above the temple and let them look at him with admiration.

Since engaging in scientific research, although it is a little lonely, a little lonely, but whenever it comes to this time, I can pretend to be an X in front of many bigwigs, that feeling is still very good, Han Fang has liked this kind of life, pointed to the carriage with one hand, and continued: "This wait until the endurance test comes out, you can determine some things, such as how far to build a post station, for changing horses halfway, so that every train runs a certain distance, it only takes a moment of effort to replace four horses, and you can continue to run, At this rate, if you run from here to Luoju regardless of day or night, it will take about two days......"