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Two-Cylinder Lego Pneumatic Engine
Specifications:
The Engine:
Two Lego
pneumatic cylinders convert linear motion of the cylinders into
rotational motion via a cam-action. As the cams turn they also turn
a set of pneumatic valves controlling the input air to each cylinder
(like a real engine the valves have to be timed when they provide
air or not). The cylinders also drive a set of 40-tooth gears to
provide power to a transmission. It operates between 25 to 50 psi of
pressure from an airbrush compressor.
The Transmission: Connected to the engine, it gears the engine up by a factor of 15. In turn the ratio at the output axle is 1:15 meaning every time the engine rotates completely once, the output axle (where the wheels are) rotate completely fifteen times. The engine turns slowly however it produces a significant amount of torque. |
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