Chapter 489: Brakes are a problem
"Boom-boom—"
The pace began to pick up.
"Boom-Boom-Boom-Boom"
The operator shouted: "Add fire." ”
"Okay"
The two men shouted, shoveled cinders with shovels and began to add them to the stove.
The white smoke is getting thicker and thicker.
'Boom'
The speed at which the crank link expands and contracts suddenly increases. The wheel speed also began to increase.
Now it has accelerated to 15 kilometers per hour, which is a complete start.
And when the locomotive broke through the speed of 20 kilometers per hour, the locomotive suddenly burst out with more surging power, and the speed suddenly surged.
Thirty kilometers.
Forty kilometers.
Fifty kilometers.
After about ten kilometers of travel, the speed of the train has increased to sixty kilometers per hour.
The car always followed closely on both sides.
Li Zhen sat in the car and looked out the window and said, "Ask." Can you continue to speed up? ”
Immediately, someone poked his head out of the window and shouted at the locomotive: "Master Li asked if it could be fast?" ”
The operator yelled back, "It's that fast." You can only keep adding fire, but there is a process of burning. ”
When the people along the way saw this scene, they had some incomprehensible feelings in their hearts.
"Is it that fast?"
"Build a road specifically for it, but it's not as fast as a steam car?"
"That's only sixty mph, isn't it? It's a bit slow. ”
"It's too slow. I thought that a road would be built specifically for it, and in any case, the speed would be about the same as that of an airplane. ”
"Alas, what a waste. This guy eats so much coal, just at this speed? ”
"What's the use of that? You might as well drive a car. ”
"I've heard that in order to build railroad tracks, bridges are built in the mountains and forests. I almost opened a tunnel. That's how fast it turned out. ”
“……”
Everyone was really puzzled, and they didn't understand why the speed was so low, and they had to build a road specifically for it.
In fact, the speed of 60 kilometers per hour is not low, strictly speaking, it is still very fast. It's just that they don't know that the train will be towing dozens of carriages at that time.
After traveling a distance of more than twenty kilometers, the train reached a speed of eighty kilometers per hour. Li Zhen muttered: "It's not as fast as I imagined." :”
"Yes, the ideal train, even if it drags twenty carriages. It should also be able to reach speeds of at least seventy kilometers per hour. But this is just the front of the car, it has been driving for dozens of miles, and the speed has only exceeded 80 per hour. It's not what I imagined. ”
Ma Jianbin answered, and a look of loss couldn't help but appear on his face.
Little did they know that it was already a miracle. This has broken through too many technologies.
10,000 years ago, when the first train was built, it was about as fast as a snail. Even decades after the technology of trains has matured, the general train speed is fifty or sixty kilometers per hour.
And the train really made the speed exceed 100 kilometers per hour after 2,000 AD.
It is already a miracle that the speed of the first locomotive quickly exceeded eighty kilometers under such conditions in Shin-Kyushu. It can only be confirmed from the side that the development speed of steam power in New Kyushu far exceeds the level of 10,000 years ago.
Who made Li Zhen stand on the shoulders of giants and see the world?
'Boom Boom Boom; ’
The sound is huge.
Li Zhen couldn't stand the shock, and said to Ma Jianbin in the car: "You go back and suggest to see if the power of this locomotive can continue to increase?" By the way, when designing the carriages, the first carriage was a locomotive, and the second carriage seemed to be a carriage specially filled with water. Judging from this situation, the steam car boils water quite quickly. It is necessary to constantly add water to the power pack, so that it can always maintain power. ”
Ma Jianbin nodded and wrote it down.
Li Zhen said again: "There is no need to go ahead." There is only a railway in front of it, and the automobile road is too barren. A train can run 80 on the tracks, but a car can't run 80 in the wilderness, which is very dangerous. Let's go back. ”
"Yes."
Immediately, the first car began to slow down and turn back. The convoy also began to turn back.
The train continued to move forward. You won't stop until you reach Licang County Station.
There are many stations along the way, and there are special personnel to register data and record all the information of the train passing along the way.
Not long after Li Zhen and the others turned back to Dafengtai Station, the locomotive had already arrived in Licang County. The total length is only a few tens of kilometers, and it won't take long.
As soon as he entered the territory of Licang County, the operator saw someone waving a red flag next to the tracks, which was a signal to start slowing down and stopping.
The operator pulls the brake on the spot to cut off the steam energy.
'Woo woo woo woo -'
As soon as the power transmission was disconnected, the steam was immediately billowing out of the chimney. There was a howling sound that resounded through the four fields.
Extremely harsh.
The train is still sliding forward, the front of the locomotive is too heavy, and at a certain speed, the inertia is very large.
There are mileage signs on both sides of the tracks, and there are signs every 100 meters.
The operator immediately calculates the speed of the train in inertia as soon as the brake is closed. This is also a statistic that must be recorded.
After cutting the brakes, the train sped forward for a distance of two kilometers, and the speed of the train was reduced from 80 to 60 miles. I can't help but be shocked: "No wonder we need to use special steel rails." The train is sliding on the steel rails, which is really much less than the road surface. After taxiing for two kilometers, the speed was reduced by twenty per hour. In that case, it is not impossible to tow twenty carriages. ”
The tracks are smooth. Really smooth. It even gives the feeling that it will move forward as soon as the hand pushes it.
This is the extremely low resistance of the steel wheel on the rail, and the two meet.
The operator vaguely saw the crash beam five kilometers ahead, where the rails had been repaired, and they had to stop there, and if there were no more rails, the car would overturn. So a lot of tough wooden beams were used to cross the rails.
The operator took one look and hurriedly began to pull the brake.
Pull the brakes down hard, and in an instant, there is a tooth-aching sound on the rails.
'Whew, squeak, squeak'
On the railroad tracks, sparks were everywhere, and sparks were constantly splashing out.
Observers on both sides of the road raised their eyebrows and hurriedly recorded the phenomenon.
But what is a little frightening is that this brake does not have much effect. The resistance between the rail and the drum is minimal, and at the same time, the friction is minimal.
The operator was a little scared. Keep looking down at the speedometer, and keep looking up at the distance at the end in front of you.
The observers on both sides were anxious and kept yelling: "Brake." Brake! ”
The operator was also anxious: "I'm braking!" ”
Doesn't work.
If a train wants to brake, how can it be as easy as a car?
No one expected that when the train braked, the stuck wheels didn't seem to have much effect...... And the damage to the wheels is also extremely high.
When there are still 500 meters to the crash beam, the locomotive is still 38 miles per hour.
The operator was in a hurry, stomped his feet in a hurry, turned around and shouted: "When I say jump later, you guys will jump." ”
The two coal workers were also scared, what was going on, and they also jumped out of the car. This brake is too bad.
At 200 meters. The speed was reduced to thirty miles per hour.
The operator knew that he would have to hit it, and yelled: "Jump!" ”
The two shirtless men did not hesitate, jumped off one left and one right, and hurriedly rolled on the spot a few times after landing, all covered in wounds cut by gravel, dripping with blood.
But they didn't care so much, and everyone looked at the front of the car that was still rushing forward in horror. Moments later, the operator jumped down with a large pile of papers, also covered in blood.
A moment later.
'Bang'.
Sawdust was flying, and everyone was dodging and exclaiming.
But I saw that more than a dozen wooden beams tied together with the thickness of an arm in front of my head were all broken and flew all over the sky.
Finally, when it encountered the last layer of waist-thick wooden beams, the train came to a stop. Stopping there, there was a constant 'woo-woo' sound, emitting billowing steam.
A group of technicians in Licang County were stunned and looked at each other.
"Brakes are a problem......"