Air Pressure (or Steam) Engine

thingiverse

I'm a novice in Cinema 4D, having just begun my learning journey, and decided to recreate an old design from high school metal shop days. I built the original back then and thought of sharing it with you all. Once I locate my old one (hidden in the garage), I'll post real images. The C4D files are also available for tinkering. This is a simple design, but its 3D model is untested; adjustments might be needed for port positions and dimensions, particularly for cylinder/piston precision and cylinder/block surfaces. While the instructions call for metal parts based on my experience, plastic parts can work with some machining for tight fits. Functionality-wise, during the downstroke, the crank rotating clockwise tilts the cylinder to align with the intake hole, receiving pressure. The upstroke, aided by a heavy flywheel, lines up the cylinder with the exhaust port to prevent pressure buildup that might hinder upward motion. If anyone manages to assemble and operate this design, I'd love to hear about it! Enjoy! A related YouTube video: [http://www.youtube.com/watch?v=vcaFWg-FvbQ](http://www.youtube.com/watch?v=vcaFWg-FvbQ) The original design used aluminum for the main block and cylinder, brass for the piston, steel for the crank. However, the STL files don't include a flywheel, bolt and spring, or base plate. For demonstration purposes, check out this video: [http://www.youtube.com/watch?v=b0etGWFQWyk](http://www.youtube.com/watch?v=b0etGWFQWyk) Note that the two C4D files differ: "Layout" has precise measurements for CNC work, while "Physics" is just a demonstration using C4D's dynamics engine and not suitable for building.