Wang Zheng was all focused on the train test at this time, and seeing that he was about to test the train, someone dared to stop him!

He turned his head and glared at him angrily, and was about to scold, when he saw that it was Zhang Bin, he was stunned at first, and then asked embarrassedly: "My lord, what's wrong?" ”

Zhang Bin shook his head and smiled bitterly: "You know how fast the wheel is, right?" ”

Wang Zheng nodded and said, "I know." ”

Zhang Bin pointed to the iron bars buried in the workshop and said: "Your iron bars are not a mile long in total, if this thing doesn't run up and it will come to an end, what will happen then, have you thought about it?" ”

Wang Zheng heard this, followed the iron bar to look into the distance, suddenly dumbfounded, the end of the iron bar is a wall, to this flat car swoop over, you have to hit a hole in the wall, the wall is not a big deal, the person on the problem must not hit the wall, he just thought about going up to try it, this time hit the wall, must not hit the shelf!

He wiped a cold sweat and said fearfully: "Why don't you open the valve a little bit and open it slowly?" ”

Zhang Bin shook his head and said: "I can't stop driving slowly, I have to find a way to make him stop, this is called brakes, no brakes, this train can't stop all of a sudden." ”

Wang Zheng said puzzledly: "Brake, brake? How to do it? ”

This is more complicated, probably using brake pads to press on the wheels, increase friction, so that the wheels stop rotating, this thing will not be able to be made for a while and a half.

Zhang Bin thought for a while, and simply said: "The momentum of this flatbed truck should not be very big, you drive slowly, let people pull the rope to follow behind, and once it is almost the end, let people pull it." ”

This is easy, Wang Zheng immediately asked people to find ten ropes, tied them to the iron frame of the flat car, and then let ten strong guys pull the ropes behind, and a simple manpower brake was ready.

At this time, the water in the boiler was also boiling, Wang Zheng thought about it, or stood up in person, holding the valve and slowly unscrewing it.

At this time, even Zhang Bin was a little nervous, he was not afraid that the car would not move, but that the car would not stop.

Zhang Bin saw that Wang Zheng had already twisted the valve, and hurriedly advised: "Liangfu, if you can't stop, jump down, jump back, and let them pick you up." ”

Wang Zheng nodded excitedly and said, "Okay, my lord, you can rest assured." ”

After that, his hand was slammed hard, and the valve was finally unscrewed by him a little, "Wow", a soft sound, a stream of steam entered the piston, followed by a "click" gear turn, and the flatbed really moved on its own.

However, after only going out a little, the flatbed truck stopped again.

Wang Zheng was just about to dance and celebrate, but the flatbed truck didn't move, what happened?

He looked anxiously at the steam piston and gear, no problem, everything was fine.

Zhang Bin saw his anxious appearance on the side, and did not remind him, but snickered.

Wang Zheng seemed to realize something, and looked back suddenly, sure enough, the ten young men were standing there dumbfounded, looking surprised, at this time, the ten ropes were pulled straight and straight by them, and it was obvious that the car was pulled by them!

Wang Zheng shouted angrily: "What are you pulling, follow along, I didn't ask you to pull, you don't want to pull." ”

When the ten young men heard this, they hurriedly walked forward, and as soon as the rope was loosened, the flatbed slowly slid forward, and Wang Zheng was so excited that he almost didn't jump up from the flatbed.

Zhang Bin smiled and walked slowly behind, this speed is nothing, even if it is not braked, as long as the valve is closed in time, the flatbed car will derail at most, and it will not hit the wall.

At this moment, the ten young men who acted as human brakes and Lao Liu and others who followed them were all full of surprise, this flatbed truck could run on its own, I really didn't expect it!

Wang Zheng saw that there was still a long distance ahead, and it would take at least a quarter of an hour to walk slowly, so he couldn't help but hold the valve in his hand, slowly increase the steam input, and then shouted: "Run, don't hold it." ”

With his shouting, the flatbed truck slowly accelerated and rushed forward, and the young man behind him ran obediently, but Zhang Bin shouted: "Liangfu, slow down, danger!" ”

Wang Zheng laughed and said, "Don't worry, my lord, I know it in my heart." ”

Zhang Bin shook his head helplessly, and ran up, this speed is incredible, after a while, there is only less than a hundred meters left in front of him, Zhang Bin hurriedly shouted: "Liangfu, slow down, slow down, otherwise it's too late." ”

Seeing this, Wang Zheng had to regretfully screw the valve back and slowly reduce the speed to an ordinary pace.

Men love drag racing, it looks like it comes from ancient times, it's such a broken car with a wooden frame, there is not even a brake, Wang Zheng still wants to use it, this heart is really tough.

Zhang Bin saw that the car was stopped, so he walked up and asked with a smile: "Liangfu, how is it?" ”

Wang Zheng said unsatisfactorily: "It's a pity that the iron bars buried in the ground are too short, and the feeling of flying is really unstoppable." ”

When Zhang Bin heard this, he smiled bitterly: "I'm asking you, I feel that there are those things that need to be improved!" ”

Wang Zheng said embarrassedly: "This, it's really troublesome without brakes, my lord, how to do this brake?" Also, how can this thing turn, if it can turn and bury a circle of iron bars in the ground, can't it keep driving? ”

Zhang Bin nodded and said: "Well, these are indeed the two most critical problems, the principle of braking is very simple, that is, use thick copper or thick iron sheets to slowly lean on the inner ring of the wheel, and the squeezed wheel can't turn on the line, as for how to do it, you have to try slowly." If you turn, if it is a circle, you don't need to do anything, as long as the circle is big enough, it will naturally turn with the track, but where you turn, the two tracks can't be the same height, which way to turn, which side of the track should be installed a little lower, this should also be tried slowly. If you want to move from one row of tracks to another, you have to be able to rotate the first two wheels horizontally, and you need to try this slowly. ”

There are many things to improve, but Wang Zheng was not discouraged at all, but said with great interest: "Well, make this brake first, let people pull it in the back, it's really not fun, if you want to drive faster, they won't be able to catch up." ”

Still thinking about drag racing, Zhang Bin shook his head, but he didn't say anything, Wang Zheng didn't interfere with what they wanted to design, he would only solve their problems on the side.

At this time, it is really a bit difficult to do brakes, because most of the brakes in later generations are pneumatic, and there is no air compressor to generate air pressure at this time, so it can only be purely manual, and if it is manual, it is also necessary to use the principle of spring pads to automatically reset the brake pads, otherwise, once the brakes are pulled, it will be difficult to get off the brake pads.

In fact, it is very simple to brake a pair of wheels, just make an arc-shaped reed, put brake pads on both ends, and fix the brake pads very close to the inner ring of the wheels.

To do such a thing, it is only a matter of one or two days, Wang Zheng according to Zhang Bin's prompts, make a try, it is really useful, however, the train is not only a flat car such a little weight, if the inertia is greater after bringing the carriage, it is not a pair of wheels can be braked, you must brake all the wheels at once, this is more troublesome.

Since the carriage has not been made at this time, it is not possible to test the effect of many wheels braking together, Wang Zheng simply turned to study the problem of turning, this amount of work is large, for this reason, he specially dug a big hole in the front and back walls of the two workshops, and cast a batch of iron bars with a slight amplitude, and connected the tracks of the two workshops into a huge oval, which slowly began to test the problem of turning.

The problem of Wang Zheng's transmission device is being solved one by one, Sun Yuanhua and Song Yingxing's side are progressing faster, within a few days, Song Yingxing came over and asked him to go to the casting workshop to see the cast track, this track is simple, anyway, the train will not run too fast at this time, almost on the line, Zhang Bin took a look, that is, the two contact surfaces of the upper surface and the inner side are not very smooth.

This problem is also very easy to solve, there are a lot of large milling machines in the foundry, a little transformation, change out of two, one specifically milling the upper surface, one specifically milling the inner side on the line.

The problem of the track was solved, Sun Yuanhua's side of the carriage and the shell of the front of the locomotive were almost done, and the appearance he made was similar to that painted by Zhang Bin, but there were many places inside with wooden squares, mainly because there was no welding machine at this time, and large iron plates or copper plates should be connected together, and the easiest way was to add a wooden square in the middle and nail them together.

This problem, it seems that there is no rule that the inside of the train is not allowed to use wood, at this time there are many things, but everything can not be done according to the standards of later generations, as long as it can meet the requirements, Zhang Bin did not say anything about it.

The progress of the track and carriage is very fast, in less than a month, Song Yingxing's side began to mass produce the track, Sun Yuanhua also made more than a dozen carriages, but Wang Zheng's side, it is not so easy to make the right wheels that can turn, although Zhang Bin told Wang Zheng about the steering wheel and spring shock absorption, his progress is still very slow.

Zhang Bin didn't know much about this, even in his previous life, it was impossible for him to disassemble the steering wheel to see what structure was inside, this could only be studied slowly by Wang Zheng, he simply took Sun Yuanhua and Song Yingxing to start developing wheels and laying tracks.

If the wheel is not driven, it is very simple, that is, cast a large wheel with a diameter of about one meter, and then find a way to light the two sides in contact with the track, but this wheel is more troublesome to install under the carriage, and the carriage cannot be installed at all.

To this end, Zhang Bin specially asked Song Yingxing to lay a track around the foundry, and built a new assembly workshop closer to the foundry, that is, a place where the carriage can be hoisted and the wheels can be installed.

This workshop is built above the annular track, not very high, just a little more than a zhang, but it is built very strong, and in some places it is even a steel frame, in order to facilitate the lifting of wheels.

Another month later, the construction of the simple assembly workshop was completed, the circular track was also paved, and Wang Zheng finally made a set of wheels that could turn, this thing is so complicated that even Zhang Bin looked at it for a long time to understand, I have to say, Wang Zheng's technology is really a bit amazing.

It only took more than two months, and all the parts seemed to be almost designed, and Zhang Bin summoned Wang Zheng, Sun Yuanhua and Song Yingxing to the assembly workshop and began to assemble real train samples.

A carriage was hoisted up, a pair of wheels were installed, and then, Zhang Bin took Sun Yuanhua and Song Yingxing to start designing the connectors between the carriages, and Wang Zheng took Lao Liu and others to work in the front of the wheeled locomotive, designing and manufacturing larger boilers, larger steam pistons and gears.

Watching the various parts slowly put together, the train in the assembly workshop became more and more like the old-fashioned train he had seen in his later life, Zhang Bin was also a little excited and forgot himself.

At the beginning, he also persuaded Wang Zheng and Sun Yuanhua not to forget to sleep and eat, but at this time, he began to take the lead in forgetting to sleep and eat, the four of them ate and lived basically in the assembly workshop, and when they were tired, they fell asleep on the bed, and they couldn't sleep for long and got up to continue to work.

In the afternoon of this day, the red Caixia shone into the simple assembly workshop, Zhang Bin, Wang Zheng, Sun Yuanhua and Song Yingxing all stood in front of the assembled train samples, looking at the steel monster in front of them with satisfaction.

It's done, it's finally done, and although there are a lot of things that definitely need to be improved, the moment when the first real train sample is completed, there is absolutely no problem with starting.

Wang Zheng watched it for a while, and then asked Lao Liu to take someone to add water to the fire test drive, but Zhang Bin grabbed him, shook his head and said: "It's not early today, let's have a good meal, take a good rest, and try again tomorrow morning, the test is not a joke, we must always keep a clear head." ”

At this time, Wang Zheng's tired head was a little confused, he could only reluctantly look at the assembled train sample, and nodded slowly: "Okay, take a good rest today, and try again tomorrow morning." ”

That night, Zhang Bin ordered a few tables of wine and food from the best restaurant in Kaohsiung City, called all the people involved in the research and development of the trial train together, had a good meal, and ordered everyone to rest for a night and prepare for the test run.

Early the next morning, at the end of the day, everyone gathered in the assembly workshop to officially start the test run, because Wang Zheng insisted on personally controlling it, Zhang Bin could only go by him.

Wang Zheng took people to prepare for the fire in the car, but Zhang Bin recruited a few personal guards, and Sun Yuanhua and Song Yingxing were waiting next to the train on horseback.

If the train is really out of control, he can also send a guard to climb up to save Wang Zheng and other operators, if it is not out of control, he can also follow to see the operation of the train sample, so as to put forward suggestions for improvement.

"Woo woo", with a long whistle, the world's first train finally slowly drove out of the assembly workshop of the Kaohsiung Foundry, and there were more than ten riders on both sides of the train following closely.

However, after slowly moving on the track for a while, the train stopped, of course, this time it was not pulled by someone, nor did there be any malfunction, but Wang Zheng was testing the brakes according to Zhang Bin's request.

It seems that the effect of braking is very good, and after Wang Zheng tried three times in a row, he finally began to accelerate slowly.

Add to about five yards in the future, stop three times in a row, no problem;

Add to about ten yards or so in the future, stop three times in a row, and there is still no problem;

When it was added to about fifteen yards in the future, the first time it stopped, there was a problem, and the train slid a long distance under the action of inertia before stopping.

Wang Zheng still wants to continue testing, but Zhang Bin said that he will not let anything, because it has only been three months now, and there is still enough time to improve, so there is no need to take any risks to test.

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