Valved Compressed Air Engine

thingiverse

https://www.youtube.com/watch?v=W9QeCIgOXYA This is an engine design inspired by Tom Stanton's compressed air engine. This is a work in progress and is being refined and optimized. In its current state, The engine is using the inner half of a VW beetle generator pulley as a flywheel, However the flywheel can be made with any object you desire if you can create your own connector. The engine uses mostly M3 bolts with a few M2 bolts. The valves use two 6mm X 11mm springs. The input is designed to use an air brush hose. There are two rubber gaskets as well as paper gaskets used for the head. There needs to be sanding done to all the moving parts, I recommend at least 400 Grit finish. The crankshaft is designed to work with two 3/4 inch wheel bearings. The cam for the intake will wear rather quickly, however, I found that the engine still ran fine for now. This engine is not like many other air engines, as it will only run in one direction. If the input and exhaust are switched the engine can run in reverse. I printed all the parts with a .1 mm layer height, and a infill density of 60-80%, Results will vary with different printers so use a number from that range. temp 210 C, With supports. The orientation of the parts works best if you build all round pieces upright. I used a 3mm X .5 Tap to cut all the threads a bit nicer than they printed, but depending on your printer this may not be necessary. If you have any other questions about any part of the process or design feel free to message me. Thanks, Andrew