SEMTO Engine ST-NF2 7.0cc Mini Inline Double-Cylinder Four-Stroke Air-Cooled Nitro Internal Combustion Engine Model Kit That Works, DIY Engine Model Gift for Hobbyists

.High Simulation: The engine model with a realistic appearance and red sport elements meaning thunderbolt movement is closer to a real engine. .Miniature: Treated by aluminum CNC processing and oxidation coloring, the delicate engine features a meticulous surface, compact structure and lightweight body. .Dual Synchronous Belt: The timing structure of a dual synchronous belt pulley greatly reduces the risk of gear jumping in high-speed function. .Rocker Arm: The short rocker arm makes the valve switch function more accurate. .Carburetor: Enjoy easier adjustment and more sensitive throttle response thanks to the brand-new signal carburetor. .Crankshaft: Adopts asynchronous crankshaft structure for strong power, smoother function and a max speed of up to 16000rpm. .Electrical Starting: Equipped with a high-torque 480 brush DC motor for a more convenient and smooth start. .DIY: You can walk through the internal structure and mechanical function principle of the engine while enjoying DIY assembling fun with the desktop engine model. .Wide Applications: Blending perfectly with a gearbox for superior compatibility and an excellent guarantee to upgrade, the product makes a stunning mechanical artware, an ideal gift for mechanical engine enthusiasts and a superb teaching aid for demonstration teaching in physical&mechanical classes. So many of our clients are teachers from schools. .Note: Starting Ignition set is not included, please prepare or buy it by yourself. If you have any questions about the product, please contact us in time.