All-Metal Mini Single-Cylinder Engine Model – High-Challenge DIY Mechanical Assembly Kit with 130 Metal Parts, Motorized Operation, Educational Industrial Model for Adults and Collectors

All-Metal Mini Single-Cylinder Engine Model – High-Challenge DIY Mechanical Assembly Kit with 130 Metal Parts, Motorized Operation, Educational Industrial Model for Adults and Collectors

• ?️【Inspired by Early Single-Cylinder Engine History】Based on classic early internal combustion engine inventions, this model recreates the historical birth and principles of the single-cylinder four-stroke engine, offering an intuitive view into industrial-era mechanical innovation.
• ✨【Premium All-Metal Craftsmanship】Made from aluminum alloy and stainless steel with CNC-machined precision, anodized coloring, and finely polished 130 metal parts, the model showcases exquisite workmanship and industrial-era craftsmanship.
• ?【Visible Mechanical Transmission Structure】The operating mechanism is completely visible, revealing the logic, movement, and mechanical beauty of power transfer. Every rotation and linkage is clearly displayed for an immersive engineering appreciation.
• ?【High-Difficulty DIY Assembly Experience】Featuring 130 components, this high-challenge model requires users to assemble every part manually, simulating a professional assembly-line process. The build takes over 4 hours with a 4.5-star difficulty rating, making it engaging and rewarding.
• ?【Lithium-Powered Functional Display Model】Powered by a 500mAh lithium battery, the engine can run for over 30 minutes on a full charge. Charging takes approximately 2 hours via DC 5V input. Suitable for users aged 10 and above.