Joytopiaminds All-Metal Vertical Dual-Cylinder Steam Engine Model with Boiler & Dynamically Balanced Crankshaft, Physical Science Experiments Toys for Adults - RTR

• ⚙️【Precision Engineering Excellence】Crafted from premium stainless steel, brass, and aluminum alloy with a semi-circular dynamically balanced crankshaft. Features CNC-machined components for ultra-low axial runout (<0.005mm) and seamless power transfer
• 🔥【High-Efficiency Boiler System】Integrated vertical aluminum boiler (167ml capacity) with conical combustion chamber maximizes steam generation. Includes safety valve and water-level monitoring to prevent dry burns (25+ minutes runtime)
• 🎓【STEM Learning & Industrial Display】Demonstrates 18th-century steam engine principles through RTR functionality. Ideal for classrooms, collectors, or engineers seeking a hands-on mechanical model (ages 15+)
• 🔧【Premium Durability】Stainless steel connecting rods, F684/F696 precision bearings, and a 78mm inertia flywheel ensure quiet, stable, and long-lasting operation. Perfect for motor-driven experiments or decorative industrial displays
• 🎁【Complete Ready-to-Use Kit】Includes boiler, alcohol lamp, and detailed instructions. Pre-assembled for immediate operation—just add fuel and water. A standout gift for history buffs, hobbyists, or STEM educators

Specifications: .Material: Stainless Steel + Brass + Aluminum Alloy + Bamboo .Model: All-metal Vertical Twin-cylinder One-way Piston Steam Engine & Boiler Model .Item Number: K007 .Engine Form: RTR Version .Boiler Capacity: 167ml .Boiler Outer Diameter: 68mm .Piston Diameter: 14mm .Piston Stroke: 12mm .Flywheel Diameter: 78mm .Boiler Endurance: 25min .Product Weight: 1700g .Product Dimensions: 22 x 10 x 19.7cm .Package Dimensions: 26 x 20 x 15cm .Package Weight: 2100g .Paking: Box .Ages: 15+ Package Including .Steam Engine Set *1 .Boiler *1 .Alcohol Lamp *1 .Instructions *1