The truck model was quickly completed, and Jiang Tian, even if he didn't need to be supervised, it was difficult for him to get out of bed for a while.

After three days of high-intensity work, his body had a huge overdraft, which could not be made up for in a while.

If you convert it into the hours of later generations, Jiang Tian slept for nearly twenty hours this night.

But even so, after waking up, Jiang Tian still felt soreness all over his body, and even his head was a little groggy.

I simply ate something, went to the workshop to see the model that had been made, and personally tested the performance of the steering system.

It was found that in addition to being a little more strenuous in terms of effort, the two wheels in front could follow the rotation of the rudder.

Let's not mention the hard work or anything for the time being, that's a problem that needs to be solved later, and now what they have to do is to start from scratch.

The powertrain has also been changed to rear-wheel drive, but a new problem has arisen, how to ensure that the power received by both wheels is the same?

One is fast, the other is slow, and it is difficult for such a car to go straight.

With this question, Jiang Tian fell asleep again, and this sleep lasted until the next morning.

When I woke up, my whole body was still sore, but my head was much better than yesterday.

Before the steam engine arrived, Jiang Tian once again plunged into the model, and led many apprentices to constantly discuss how to solve this problem.

At present, Jiang Tian still adopts the same driving method as the train.

However, considering the passability of the truck, the linkage shaft cannot be arranged like a train, so if you pass a pit casually, it may cause damage to the linkage shaft.

Jiang Tian's method is a 45-degree angle, with a reasonable position, so that the possibility of hitting the ground can be basically solved.

This problem is solved, and you don't even need to test it to know that it can be solved, because the position of the linkage shaft is pulled up diagonally, within the support range of the wheels, that is, even if it hits the ground, it is the chassis that hits the ground, and then it will be the turn of the linkage shaft.

"Let's talk about what we think and see if there's any way to solve this problem." Jiang Tian scratched his head, in addition to experimenting this day, he was explaining the principles of these designs to these apprentices.

However, although some problems have been solved on this problem, Jiang Tian always feels that it is not the best solution.

And the steam engine does not seem to solve this problem, even if two steam engines are arranged, there is no way to be sure that the power delivered by the two steam engines is the same.

"Maybe you can refer to the design of the steering system?" Tian Ergou muttered, the model was built by him with people, and the steering system was the top priority, among all the apprentices, only he knew the most thoroughly, and he had personally operated it.

Tian Ergou just thinks that this solution may be solved, but he is not clear about the specifics.

"Steering system?" Jiang Tian was stunned, slapped his head violently, and secretly scolded himself for being stupid, why did he make the same mistake again? Why did you start drilling again?

But fortunately, this time he consulted everyone, so he wasted only a day to find a solution to the problem.

It's not that I haven't done this before, but I haven't done it before.

This change not only brought a relatively large improvement to Jiang Tian himself, but also made a great improvement to these apprentices under him.

"The steering system uses the principle of rudder gears to operate the two front wheels at the same time, and in the same way, we can also use a drive shaft to drive both wheels. In this way, there may be more power improvements, and at the same time, it can also ensure that the power received by both wheels is the same as possible. Jiang Tian explained.

Although it is impossible to guarantee that they will be exactly the same, in the current situation, the motivation they receive will be more balanced, and even if there is a gap, the difference will not be too large.

As he spoke, Jiang Tian found paper and a pen at the same time, and drew a simple structural diagram on the paper.

In fact, it is very simple, at least in Jiang Tian's opinion, there is not much difference from the steering system, it is nothing more than one is rotated by manpower, and the other is rotated by steam.

Soon, a non-standard drawing was drawn like this.

The explanation does not need to be too standard, one horizontal and one vertical, the horizontal one represents the rear spindle, and the vertical one represents the drive shaft, as long as the two are connected together.

Of course, in this era, don't mention any auxiliary equipment, let alone any booster equipment, there are no conditions and unrealistic.

It's just going straight to the point, and if you get it out, it's a success, and as for the rest, I'm talking about it in the future.

Like this T-shaped gear connection method, they have long studied several sets of reasonable and feasible methods, and it is not troublesome to operate.

Soon, the project was handed over to the carpenter to start building the model.

At the same time, Jiang Tian began to design new drawings with many apprentices.

The old drawings were in a two-wheel transfer mode, and after changing to this new model, the structure of the tail section needed to be changed.

However, this is not a big problem, as it is only necessary to start redesigning the transfer case and connecting it to the propeller shaft.

……

It's slow......

It's struggling......

But in the test site, everyone had a smile on their face.

Solved, the problem is finally solved.

The wooden model, relying on the power provided by artificial, actually moved slowly on land, and the person sitting in the car could even control the direction by operating the rudder.

The speed is slow, that's normal, there is no steam engine installed on the wooden model, all the structures are there, but in terms of power, it has been changed to artificial swing mode.

This method was only used in the experimental phase to test the feasibility of the structure, and now it has been proved that the truck can be moved as the mold is moved.

The rest of the work is simple, they will install a small steam engine on the model and test it, and if this test is also passed, it will be ready to enter the actual construction test stage.

But soon, Jiang Tian rejected the design.

The reason is because of practicality, this design is not much different from the layout of the locomotive, except that it is reduced, but no matter how it is reduced, the size of the steam engine is still where to put it, but this is a small problem, it just affects the line of sight, and it is enough to adjust the position.

Of course, the first model was scrapped because of this, and the wood simply could not withstand such high temperatures and such heavy weights.

A day later, a second model appeared, this time with the rudder plate at the front and the steam engine at the back.

The conclusion is unusually surprising, the view is wider, this is not the only benefit, the other benefit is that you can clearly feel that the steering system is also relatively less labor-saving than before.

If in the past it required a person to exert all his strength to maneuver, now it only requires eight points of strength.

This is no small discovery, and it is also a great progress.

However, a new problem has arisen, and that is the excessive temperature in the rear.

Considering the practicality, the length of the truck must not be as long as the train, and it is always necessary to find a way to reduce it and reduce its weight as much as possible, under this premise, to ensure that its power is not affected.

In this design, Jiang Tian reduced the size of the cab as much as possible, and used the space above the steam engine to set it up as a warehouse bucket, but according to experience, this operation proved to be unreliable at all.

Because the truck was built for the first use of the army, what did the army do with him? Of course, it's used to transport supplies and ammunition, but it's ammunition, and the temperature is so high, what should I do if it explodes directly?

However, the next problem is that you can't measure the actual data with a model.

However, in order to ensure the progress of the research, Jiang Tian decided to order three more steam engines of different sizes from the steam engine workshop, which were smaller than the smallest of the first two, and Jiang Tian needed to know how much the size of the steam engine could be compressed.

And the smaller the steam engine, the greater the benefit for the truck, providing more space and weight to carry cargo.

When a person's brain is open, you can never imagine how rich his imagination really is.

A month later, when five trucks were parked in front of us, no one could tell the people who had been involved from beginning to end.

The appearance of the truck is ugly, and you can't see the slightest bit of beauty, but it doesn't matter, it doesn't matter if it's good or not, the important thing is that these five trucks are all able to drive.

Although there is no final endurance test, in the proving ground, each truck is guaranteed to run stably for no less than three hours, and its speed is the most surprising.

The five trucks have their own advantages and disadvantages.

But when these five trucks appeared, Jiang Tian's first reaction was to report it immediately.

Then, there was a reply from above, and His Majesty would arrive later, and he wanted them to do the final inspection as soon as possible, so that there would be no more problems as much as possible.

The time was a bit rushed, but they had tested it before, and they still had some numbers in mind.

But there are also problems, and they are still a headache.

"Master, what should I do?" Li Di pointed to the almost worn wheels, a little helpless.

These problems cannot be concealed, even if the new wheels are replaced, even if they are produced, once they are delivered, the problems will be greater, and if you want to solve them at that time, you need to pay more.

"That's not our problem, let's give the rubber mill a headache!" Jiang Tian replied leisurely, each performing his duties, but not for fun, and he didn't have much contact with rubber, these rubber wheels were provided to them by the rubber mill, and if something went wrong, they naturally had to go to the rubber mill for trouble.