Chapter 4-4: Volume 4 - Chapter 4 – Golem Engine
Here’s the last chapter from Silent, please go check out his current translation, Legend and thank him for these 4 chapters .
04-04 Golem Engine
After making a set of legendary accessories, Jin took a break . Soaking in a bath at dusk was refreshing .
「Ah, we’re doing well, we managed to get several ideas afloat . 」
As Jin leisurely leaked a murmur, Reiko was watching from the side .
Now Jin wanted to make a motor engine for rotational motion .
「How to make the rotational movement from foot pedals……」
At that time, an inspiration struck Jin .
「That’s it . 」
「Golem Engine . 」
「The idea is turning the crank shaft by incorporating the same mechanism used in a golems arms and legs to replace the pistons . 」
Jin didn’t know the difference between a 2 stroke and 4 stroke engine, but he knew enough to make an engine .
「I can try to make a prototype in bronze . 」
Bronze is a material commonly used because it’s easy to shape with magic . Naturally, Jin thought to make a prototype out of this .
In the end, a prototype of the Golem Engine was completed before dark . It was about 50cm tall .
「Alright, time to commission this before dinner . ……Start!」
Inside, the drive mechanism starts to move and the crankshaft turns .
「Oh, it’s turning, it’s turning . 」
It was found that the speed of rotation could be increased by pouring in more mana .
「Hmm, as I thought, this is the limit . 」
The limit was roughly 300 rpm . As this was going to be cranked by hand, it was unlikely to be raised above this number of revolutions .
「Reiko, can you try to stop the shaft?」
「Yes, I’ll try . 」
Reiko held the 2cm diameter shaft at an output of 5% . Although the speed of rotation slowed, it didn’t stop . It finally stopped at 10% output .
「Right, thanks Reiko, the Torque (rotational force) is quite something . It could even go in a car . 」
(TLSilent: double check second half of sentence . )
It remained durable .
「Since we’ve found the max rotation, it’s time for dinner . Reiko, don’t stop it but tell me if the situation gets bad . 」
With that, Jin headed for the ‘Mansion’ outside . Soleil and Luna made the daily meals there .
「It’s Soleil today . She seems accustomed to it . 」
(TLSilent: I think this is what it means?)
「Yes Father . 」
There was wheat porridge, bread and tea . For tea, Reiko would sneak back to Kaina village in the middle of the night to take some tea leaves . The seedling would only produce drinkable tea leaves several years after being planted .
Eating wheat porridge, drinking tea and spreading marmalade on bread . Recently, a plant similar to strawberries had been found and strawberry jam was made . Thinking about the durability of the engine, Jin quickly finished dinner and went back to the laboratory .
「Oh, Father . 」
「How is it?」
「Yes, it’s working without any problems . 」
「Let’s see . 」
The Golem Engine was too hot to touch . The piston didn’t have a heat sink, so this was only natural .
「Alright, let’s stop it . 」
When Jin stopped the engine, he took it apart . This was to determine if any parts were worn out or damaged .
「Uh huh, as I thought, the damaged parts are mostly the golem parts . An Adamantium skeleton with muscle tissue made by twisting magical fibre is best . 」
If you thought that the constitution was similar to Reiko’s, you wouldn’t be wrong .
「Well then, let’s get the production started . Reiko, get me some Adamantium . 」
Asking Reiko to get the heavy Adamantium, Jin went to get the magic fibre and Magi Crystals on his own .
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「It’s finished . 」
Late at night, the Golem Engine was completed . The crank and shaft, which were supported by ball bearings, was mostly made with Adamantium . The golem parts were strengthened with multiple reinforcements .
As a result the torque was increased to nearly 3 time that of the trial . Reiko only stopped the shaft after raising her output to 20% .
「Finally, I have to make gears now . 」
With that, the day’s work was finished .
The next day, Jin began to seriously consider making gears . He had tried making them before but when they were put together they were stiff or loose making them useless .
Even Magi Craft Meisters had a weakness .
The Magi Craft Meister’s ability was similar to a 3-D software drawing system . By default, the basics shapes of balls, discs or cubes could be copied .
But since there wasn’t a concept of gears, as long as there wasn’t a reference, it was hard to make it perfect .
「Hmm, how exactly can I make the model . 」
Jin was grumbling as he ate breakfast . Reiko was worrying at the situation .
「Father, you have to stop thinking about it during meals . 」
「Oh, ah? You’re right . ……In short first divide the circumference equally……」
「Father!」
Unable to hold it in, Reiko finally scolded Jin .
「……Reiko?」
Surprised by Reiko’s yelling, Jin looked at Reiko .
「Ah, ah, a……」
Reiko herself was surprised that she yelled at Jin .
「I-I’m very sorry . 」
Whoever she learned from, Reiko went into a dogeza .
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「I have had an irreverent attitude to Father . Please punish me! 」
Jin reached for Reiko . Reiko had already determined her resolution . She wouldn’t defend or do anything, when Jin’s hands touched her, she would be deconstructed in a blink of an eye .
But contrary to expectation, Jin’s hands gently stroked Reiko’s head .
「Sorry Reiko, I made you worry . It’s as you say . From now on correct me if I’m wrong . 」
「……You’re not angry?」
「Why should I be mad . Reiko yelled because you were thinking of me . 」
Jin said while eating the rest of breakfast .
Jin had been thinking since the morning but hadn’t come up with any good ideas . After lunch, Jin was drinking tea at the mansion . The cup in his hand was cylindrical . He fiddled around with it while thinking of gears .
「In short, I can translate a single gear into copies . With that I can make any number of identical teeth . 」
Ball bearings only need to be the same weight and spherical but a gear cannot deviate even slightly .
「Father, please don’t try the impossible . 」
Reiko was anxious seeing Jin suffer like this .
But Jin didn’t seem to hear it .
Reiko came to the conclusion that it wasn’t possible to stop Jin from thinking about it . Instead it would be better to help him to get him out of this state .
Therefore, using Engineering magic, Reiko processed a wooden board that was at hand into a circular shape . Shapes of various diameters were created and placed in front of Jin .
「Hmm? This is?」
Jin noticed it and looked up .
「I was wondering if this could help Father think . 」
Jin took one in his hand . Disc . When combined it made a friction drive . In order to increase friction, teeth were cut into the side of the disc .
(TLSilent: needs to be double checked . )
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「First you have to think about the materials, you want a material that won’t slip……」
A thought suddenly hit Jin .
「That’s right! First of all create a linear gear……rack . Then cut the number of teeth required, round them off……done!」
「Father?」
「Ah, Reiko . Looking at the disc you made me, I thought of something . Thank you . 」
Jin stroked Reiko’s head while saying so . Reiko’s narrowed eyes looked very happy .
「With this, I can probably make spur gears . If I can make spur gears, it is likely I can also make bevel gears . 」
In short, because of the equal divisions of the circumference, it is easy to make, using that as a reference, harder production is possible .
「Father, it’s time for dinner . 」
Reiko said,
「Hmm? It’s this time already . 」
The moon was already in the sky .
「I’m starting to feel hungry as well . 」
Jin stretched while saying so and went for the meal .
But after dinner, Jin started thinking of a wide variety of ways to fabricate gears, very late at last came up with a method .
「Okay, you can go to sleep now . Goodnight Reiko . 」
「Yes Father, goodnight . 」
Relieved that Jin also went to bed, Reiko was glad to be patted by Jin today .
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