fivecylinder radial engine DM116 Product overview A detailed 1/6 scale fivecylinder radial engine model built from aluminum alloy and stainless steel. This metal construction model combines realistic moving parts with a rechargeable power system so you can assemble, run, and display an accurate mechanical replica. Key benefits Realistic mechanical display: Metal construction and precisionmachined components reproduce the look and movement of a radial engine for an authentic mechanical decoration. Working dynamic model: The builtin rechargeable 3.7V 800mAh battery and motorized drive let the engine run so you can observe piston and crank motion in operation. Safe automatic cutoff: The model automatically powers off when it encounters external resistance to protect gears and components during operation. Educational and handson: A multipart assembly encourages practical learning in mechanics, logic, and problem solving while providing an engaging STEAM project. presentation: Packaged in a end metal gift box, suitable for display, gifting, or storage. Highlights and what makes it stand out Durable materials: Main components in aluminum alloy and stainless steel for lasting detail and stability. Readily rechargeable: Charges over a standard USB DC 5V input; typical charging time is about 2 hours. Manageable build: About 250 plus parts and an assembly time of around 4 hours with a difficulty rating of 4 out of 5, designed for hobbyists and older children. Complete set: Includes the engine assembly kit, installation tools, and an instruction manual to guide the build. Technical specifications Product name: fivecylinder radial engine Model: DM116 Scale: 1/6 Number of parts: 250 plus pieces Materials: aluminum alloy and stainless steel Battery: Lithium 3.7V 800mAh Charging voltage: DC 5V via USB cable Charging time: about 2 hours Function: Automatic power off when encountering external resistance Assembly difficulty: 4 stars (4 out of 5) Assembly time: about 4 hours Recommended age: 12 years and above Product dimensions: 19.9 x 19.9 x 11.4 cm Product weight: 1900 g Package dimensions: 34 x 24 x 14.5 cm Package weight: 2500 g Packing: end metal gift box Package contents Engine 1 set Installation tool 1 set Instruction manual 1 Practical use scenarios 1. Desk or shelf display: Assemble and run the model as a mechanical centerpiece for an office desk, workshop shelf, or study, showcasing moving pistons and crankshaft motion. 2. STEM learning project: Use the kit in classroom or home education settings to demonstrate basic engine mechanics, cause and effect, and handson assembly skills. 3. Hobbyist build and photography: Ideal for hobbyists who enjoy metal model assembly, mechanical photography, or creating stop motion and demonstration videos of working mechanisms. Notes for users Recommended for ages 12 and up due to small parts and assembly complexity. Charge via a DC 5V USB power source; typical charge time is about 2 hours. The automatic poweroff feature reduces risk of damage if the mechanism is obstructed during operation.