Single Cylinder Air Engine, Experimental

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A few months ago (June 2017), I uploaded a video on my YouTube channel (youtube.com/user/popzct0214/videos) showcasing an Experimental Single Cylinder Air Engine. After experiencing repeated propeller strikes on my fingers, I put the project on hold and decided not to release it initially. Since then, several users have requested access to the STL files, which I'm providing here. Please note that this engine is still experimental, and running the 10" propeller can be hazardous; thus, be prepared for precise assembly, fine adjustments, and protective gear (gloves, face shield) if you decide to run it. This design relies on a cam, pushrod, ball bearing, and spring to pressurize the cylinder at the right moment. The engine's performance is dependent on cylinder blow-by for exhaust, resulting in lower efficiency but making an interesting conversation piece and impressive noise. As usual, I may have overlooked some files or details, so don't hesitate to ask if you have any questions; I make mistakes frequently.