Didactic Four Stroke-cycle Engine Demonstrator Finger Engine Features:.Tribute to the classic: Tribute to the first four-stroke internal combustion engine in history, this internal combustion engine model adopts a single-cylinder four-stroke 2-valve double-cam ejector structure, with a simple structure, light and exquisite, and is a mini-handcraft that you can't put it down..Sophisticated craftsmanship: All-metal refined, highly textured metal parts, strong and impressive mechanical sense, can bring you knowledge about the wonderful world of physical and mechanical engineering in the process of playing..Simulation operation: It is not only a decoration model, but also a simulation dynamic model that can simulate the operation of a real engine.
Running the flywheel by hand, the piston is movable, the timing of the intake/exhaust valve corresponds, the working process of the engine is visualized, and the working principle is clear at a glance..Science and education Assembly: It truly restores the working principle of the OHV engine and can be used for teaching demonstrations. At the same time, it is also a decompression handheld toy for mechanical enthusiasts, and it is also a good physical and mechanical educational toy for children..This model has been assembled, do not disassemble at will.
Do not play with violence to avoid damage to the model.

