To be honest, after receiving Rebecca's inspiration, Gao Wen instantly realized that this small "repulsive trick" was simply the biggest surprise this world gave him: simple, low-cost, stable, and good results.

Anyone who has contact with magic mechanisms is not unfamiliar with this basic magic: whether it is a magic door that is automatically opened or something else, as long as there is a structure that needs to be pushed in the mechanism, there will definitely be a "repulsive trick", and how much power it can output? As a spell, its power depends entirely on how much magic you can provide and the performance of the magic material itself. In Gao Wen's opinion, its conversion efficiency is extremely high: the gate of the treasure house in the mountains is cast in a whole with heavy purple steel, and the single door weighs several tons, and the ancient mechanism that controls the opening and closing of the door can run easily without any mechanical optimization. Of course, this is because the ancient Gondor Empire had black technology, and their purified magic crystal performance was ghost animals, but contemporary "low quality products" are not bad, and the magic trap that can push huge rocks all over the ground is not a rare thing!

And all these magical mechanisms, their use of repulsive power arrays is actually quite primitive and clumsy - the route of power-powered bricks flying, and in the spirit of making great efforts to push the repulsive power array hard, almost never consider using lever gears to optimize...

Therefore, Gao Wen had high expectations for magic engines. He believed that even if he used cheap materials to build the engine, the power that the thing could provide would be incredible.

After the "piston version" magic engine was discussed, without waiting for Rebecca and Hetty to complete the transformation and detailed demonstration of the drawings, he thought of further using the repulsive power array and expanding it to a structure similar to a motor.

Motors composed of stator and rotor naturally have additional advantages: their structure is relatively simple, and the failure rate is greatly reduced; when it starts, the "repulsive point" on the rotor can operate directly at full load, and the starting torque is very large, unlike the piston engine, which requires insufficient starting torque, and the torque needs to be maximized after the speed is increased; its volume can be compressed to a very small, and it has a higher volume-efficiency ratio when using magic nets to supply energy; thanks to the particularity of magic technology, the "rotor magic engine" does not require brushes, nor does it require a "toggle device" for frequently switching rune triggers. This reduces the failure rate and also increases the overall life of the machine (because there are few wear parts), which is quite cost-effective...

But it also has obvious disadvantages - regardless of the advantages and disadvantages of electric motors and internal combustion engines on the earth, and based on the technology of the "world", the rotor-type magic engine in Gaowen's concept requires a large number of "repulsive points" distributed throughout the shell to ensure the balance and continuity of the afterburner process. Putting so many independent magic arrays together must ensure that they cannot interfere with each other, the output is accurate and consistent, the distance from the rotor is accurate, etc. This reduces the technical difficulty of the engine in mechanical structure, but increases the difficulty of drawing magic arrays, and the latter... requires more difficult to cultivate technical talents. This is more complicated than the trouble caused by the mechanical complexity.

But no matter what, this idea is particularly attractive, and Gao Wen cannot give up on it.

So he took a blank piece of paper from the side, and quickly sketched a sketch in the curious gaze of Amber, Rebecca and Hetty.

A ring-shaped shell, an internal rotor with many inclined blades (repulsive objects), and there are many symmetrically distributed repulsive arrays on the shell...

Its structure is so simple.

"This is..." Hetty raised his eyebrows and spoke curiously and hesitantly.

Gao Wen put down his pen and said with a little excitement: "The second generation machine."

The three people except him were stunned and confused. After a while, Amber looked at Gao Wen like a monster: "How did you have this brain?"

"Don't insult my ancestors!" Rebecca was angry when she heard this. She picked up the staff and put the staff on Amber's forehead, but then she turned her head and asked, "Ancestor, how do you have your brain?"

Gao Wen: "…"

It was not until two seconds later that Rebecca realized, and quickly put away his staff and apologized honestly: "I'm sorry, lord of ancestors, I can't speak anymore..."

"No, this is not the problem," the half-elf lady who survived the crisis of the headshot of the iron rod was not at all settled, staring at her eyes and continued to exclaim, "You have not even discussed your first generation sketch yet, but you have made a second generation out? And it doesn't look like it from the principle or structure. I'm afraid that there are a lot of sketches waiting in your mind, right?"

Gao Wen almost choked into the bronchial: Did this guy be mistaken for a while?

"It's just an immature idea," he quickly restrained his expression that was almost broken, looking at Hetty, who was more meticulous in thinking, "Its principle is very simple. What do you think is feasible?"

"It's really much simpler, and the theoretical feasibility is very high... but it's probably not easy to do in reality," Hetty just glanced at it and saw the problem, and the reply was exactly the same as Gao Wen's idea. "The large number of repulsive magic arrays are arranged together, and they are still this symmetrical and tight arrangement, which is almost specially prepared for magic resonance. They will interfere with each other 100%, and whether they can move after activation is a problem."

"What if the diameter is increased and the distance between each 'repulsive point' is also increased?"

"...The feasibility is still not high. I can understand what you mean. These repulsive points must be continuously ‘relayed’ to push the rotating part in the middle efficiently, so their distance is limited. Rather than pulling a long distance, it is better to find a way to add a magic ban structure between magic arrays and block interference, but in this way... the cost is probably terrifying."

Gao Wen immediately thrust the corner of his mouth with a toothache: The forbidden magic material, even the cheapest one is the precious metal in magic material. If it is really used on mass-produced machines, even if he dies on the spot and then burys people, Rebecca and Hetty will collect tickets next to him for people all over the country to visit... What a ghost metaphor?

"Then do a prototype research with the extra effort, which is also considered technical accumulation," Gao Wen sighed. "First of all, get the piston prototype. Most of its parts should be hand-made to Hammer and his apprentice. The more difficult parts and repulsive mechanisms are hand-made to the new rune craftsman. Remember, don't consider the cost of the first machine. As long as it can run safely and stably, we will succeed - and it's okay to sacrifice some performance on this basis."

Hetty and Rebecca left with a lot of drawings. Considering the administrative pressures the former had taken, Gao Wen handed over the main task of manufacturing magic engine prototypes to Rebecca, while Hetty only provided some technical support, which made Rebecca so happy again.

After both of them left the tent, Gao Wen put the remaining drawings together and handed them over to Betty, who was squatting on the nearby ground and practicing writing with small branches: "Put them away. By the way, I asked the carpenter to make a small desk for you, which will be delivered to your tent in the evening, and by the way, there is also a set of stationery and some white paper - save some use."

Betty took the sheepskin bag containing the drawings and was stunned for a moment, then showed a particularly happy expression, and bowed hard and almost threw himself forward: "Thank you, Master~! You are so good!"

The little maid ran away almost jumping and jumping.

Gao Wen looked at the little maid's back with a smile, and couldn't help but smile and shook his head. The look of Amber next to him became strange: "I'm wondering, you are so busy all day long, and you can still take care of this stupid girl like this... Could it be that your real habit is this? Oh, you guys are popular to attack your maid... Hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey he

Gao Wen twisted Amber's ear hard, but he was not angry: "What kind of habits do you do? I just like the child's diligence, learning and motivation. Can't you be cleaner in your mind?"

Amber rubbed his ears while looking at Gao Wen angrily: "Don't you often say that I have a clean mind?"

Gao Wen: "...I mean your mind is blank and ignorant!!"

"Ha? You didn't praise me for a long time?"

Gao Wen glanced at the embarrassing half-elf and walked towards the tent gate.

Amber fruit couldn't help but curiosity and followed: "What are you doing? Are you going to eat something delicious secretly? Take me one!"

Gao Wen waited for Amber to follow and said casually: "Go and talk to that big iron ball. It has been lying in the tent for so long, so he should be willing to say something to me."

When Amber heard that it was this, she suddenly lost interest: "Oh, I won't go..."

Gao Wen grabbed the guy in his armpit and prepared to take him away.

But this time he failed: Amber, who had been tossed like this, had gained experience and had already escaped into the shadow the moment he was caught. Gao Wen felt that his hands were empty, and the half-elf thief had already run to more than ten meters away.

"You go and talk to the ball~" Amber stood in the distance and shouted with a smug look on his face, "I'll go find Betty to have a meal~~"

Gao Wen looked at the "Noun" who did his own way, and waved his hand and turned around and left.

In front of the special tent in the south of the camp, Gao Wen asked the guards about the metal ball: "What's the movement of that guy in the tent?"

"No," replied the conscientious soldier straightened his body, "we have been staying here, and the ancient magic device is just staying in the tent with no intention of going out."

Ancient magic device, this is the explanation given by Gao Wen to the soldiers who witnessed the metal ball. Now it seems that this explanation has been accepted by them.

After a few words of encouragement to the soldiers who were standing guard, Gao Wen stepped into the tent.

The metal ball floated well in the center of the tent, about half a meter away from the ground, looking like a sci-fi suspension device.

But this sci-fi ball was whispering: "Mom, I thought you would forget you threw me here! There were only a group of stupid soldiers standing guard around me, either the annoying little old man coming in, or the female human who likes to wear a red skirt coming over. They were all boring. Let me tell you, if I hadn't paid attention to the promise of this ball, I would have gone early today..."
Chapter completed!