88 - 04-04 Golem Engine
After creating a legendary accessory, Jin took a short rest. It is not quite dusk yet, but he takes a bath and refreshes himself.
"Ah, I'm sure I'll come up with a lot of new ideas this way.
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Reiko watched over Jin as he relaxed, muttering to himself.
Right now, Jin wants to build a motor or an engine with rotational motion.
"I can make a rotary motion if I can row with my feet. ......"
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At that moment, an idea flashed through Jin's mind.
"That's it!"
He ran out of the bath and hurried to the changing room. Reiko followed him in haste, grabbing a bath towel to see what was going on.
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"Is that the Golem engine?"
"Yes. In short, instead of a piston, it incorporates the same mechanism as a golem's arms and legs to turn a crankshaft.
Although he did not know the difference between a two-cycle engine and a four-cycle engine, Jin knew at least the principle of how an engine turns.
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"First, let's make a prototype using bronze.
Bronze is the most commonly used material because it is easily deformed by magic power. Therefore, it is natural for Jin to think of making the prototype with bronze.
So, the prototype of the golem engine was completed before dark, at a height of about 50 centimeters.
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"Okay, let's do a test run before dinner. Start ......!"
The internal drive mechanism starts to move and the crankshaft turns.
"Oh, it turns, it turns!
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Then, he increases the rotational speed by increasing the amount of magic power he pours into the crankshaft.
"Hmmm, I guess this is the limit.
The rpms seem to be about 300 rpm. Since the handle is cranked by hand, it would be difficult to raise the rpm any higher.
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"Reiko, can you hold this shaft and stop it?
"Yes, I can try."
Reiko first gripped a shaft about 2 cm in diameter at 5 percent output. The rotation slowed down, but did not seem to stop.
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She then increased the output to 10 percent and the rotation stopped for the first time.
"Okay, thank you Reiko. There is a lot of torque (rotational force). I have a feeling that I can use a direct connection in a car.
The only thing that remains is durability.
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"Let's keep it at maximum RPM and I'll go get some dinner. Reiko, I'm sorry, but you'd better see if it stops.
With these words, Jin went to the house he had built outside, which he had come to call
"So today it's Soleil. You've gotten used to it, haven't you?
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"Yes, Father."
Barley porridge, baked bread, and tea were served. The tea was from a tea tree from which Reiko had secretly gone to the village of Kaina in the middle of the night. We planted a seedling so that we would be able to drink our own tea in a few years.
We eat barley porridge, drink tea with a familiar taste, and eat bread with marmalade made from boiled citran. I have recently found some grass that looks like strawberries, so I think I can make strawberry jam.
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Jin, anxious about the engine endurance results, hurriedly finished his dinner and returned to the laboratory.
"Oh, Father..."
"How is it?"
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Yes, it's working fine.
"Let's see..."
I touched the Golem engine, but it was not very hot. No wonder, since there is no piston to generate heat.
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"Okay, let's stop the engine and take it apart.
Jin stopped the engine and rushed to disassemble it. He checks for any damaged or worn parts.
"Well, as I thought, the golem part is the most damaged. We can make a skeleton out of adamantite and muscle tissue out of magical fibers.
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I thought that a structure similar to Reiko's would work.
"All right, let's go to work then. Reiko, bring me adamantite.
Asking Reiko to bring the heavy adamantite, Jin went to get the magical fiber and magi-crystal that he could hold.
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* * * * * * * * * * * * * * *
"It's done!"
Late at night, the Golem engine was completed. Most of the engine is made of adamantite, and the crankshaft is supported by ball bearings. The golem parts are reinforced.
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The torque was increased to nearly three times of the prototype. It is so strong that Reiko can finally stop it by increasing the output to 20 percent.
"Now we finally have to make the gears, don't we?
That was the end of the day's work.
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The next day, Jin seriously considered making gears, which had been on his mind for a long time.
He had made gears before, but when he tried to mesh them together, he found that they were slightly stiff and rattled too much, making them unusable.
It is a sign that even the Magecraft Meister had his own difficulties.
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It seems that the Magecraft Meister's ability is like a 3D rendering software. The basic shapes of spheres, discs, and cubes can be created and copied by default.
However, there was no concept of gears, so it seems that unless you create a standard object once, you can't create a perfect one.
"Hmmm, how can I make a module exactly ......?"
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Jin groaned as he ate his breakfast. Reiko sees him and worries.
"Father, why don't you stop thinking at least when you are eating?"
"Ah? Ah... ah... I guess so. I get it. ...... So, the first step is to divide the circumference into equal parts. ......"
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"Father!"
Reiko finally scolded Jin.
"...... Reiko?"
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Startled by Reiko's yell, Jin looked at her.
"Ah, ah, ah......."
Reiko was surprised at herself for yelling at Jin.
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"I'm so sorry!"
Reiko gets down on her knees, wondering who she learned it from.
"You have behaved unbelievably disrespectful to your father. Please punish me!"
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"............"
Jin reaches out his hand toward Reiko. Reiko is ready. She has no defense, and in Jin's hands, she will be disintegrated in a blink of an eye.
But contrary to her expectation, Jin's hand gently caresses Reiko's head.
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"I'm sorry, Reiko, for worrying you. You are right. Please correct me if I'm wrong from now on."
"...... aren't you angry?"
Why should I be? Reiko yelled at me because she was thinking of me.
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Jin ate the rest of his breakfast, savoring it.
Jin spent the rest of the morning thinking, but no good idea came to him.
After lunch, Jin was having a cup of tea in the
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"In short, you put teeth of the same size in a row. I can make as many teeth of the same size as I want.
The bearing balls only needed to have the same weight and spherical shape, but in the case of gears, even the slightest misalignment would be fatal.
"Father, please take it easy."
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Reiko looked worried as she saw Jin thinking and worrying more than ever.
Jin, however, is listening to her with a blank stare.
"............"
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Reiko realizes that there is nothing she can do to make Jin stop thinking now, and she thinks that she can get him out of this situation faster if she cooperates with him.
So, using engineering magic, which Reiko can also use, she processes a wooden board she has on hand into a disc shape. She made several of them with different diameters and placed them in front of Jin.
"Hmm? What is this?"
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Jin noticed and looked up.
"I thought it might help your father think.
Jin took it in his hand. A disk. If you put them together like this, it's called a friction wheel. Gears are gears with teeth carved around them to increase friction and prevent them from sliding.
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"If we start with the friction wheel, we should put a non-slip material around it. ......"
Jin thought about this and suddenly had a flash of inspiration.
"Yes! First, make a straight gear ...... rack. Cut it in the required number of teeth, round it, and ...... you've got it!"
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"Father?"
"Yes, Reiko. I got the idea from looking at this disk you made for me. Thank you."
Jin patted Reiko on the head. Reiko's eyes narrowed and she looked very happy.
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"Well, now we can make spur gears. If I can make a spur gear, I think I can manage to make a bevel gear.
The point is to divide the circumference into equal parts, so once the standard is made, the rest is not so easy, but it can be made.
"Father, it's time for dinner.
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Reiko said,
"Hmm? Oh, is it that time already?"
Jin looks at the small moon in the sky and knows that it is already night.
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"I'm getting hungry when I realize that."
Jin stretches out and heads for the
* * * *
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After dinner, he continued to think about various ways to make gears, but it was late at night when he finally came up with a good idea,
"Well, I'm going to bed. Good night, Reiko.
"Yes, Father. Good night.
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Reiko was relieved to see Hitoshi who went to bed without any hesitation, and was happy to be petted by him today.