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Interactive STEM Learning - Demonstrates heat→mechanical→kinetic energy conversion. Perfect for science fairs, physics classrooms, or educational play with gift-ready packaging (750g box) Alcohol-Powered Operation - Requires 95% fuel (not included). Simple startup: Preheat quartz cylinder 30 seconds, hand-crank flywheel to activate wheel-driven motion. STRICTLY no gasoline/kerosene ️ Industrial-Grade Durability - CNC-machined metal frame + high-temp glass cylinder withstands repeated use. Piston engineered for minimal wear during extended runs Unique Moving Physics Model - engine powers actual wheel movement! Features 55mm precision-milled alloy flywheel and high-strength metal chassis for stable operation (18×12.5cm when assembled) ️ Complete DIY Assembly Experience - All metal components included with illustrated instructions. Develops engineering skills through hands-on construction - no glue/soldering required (suitable ages 15+)