Building off of my earlier sliding valve air engine( https://www.thingiverse.com/thing:2492963), here is a 2 cylinder version. This design runs well, but it needs lots of air.
Included in the files is a list of parts and hardware - See BOM_list.pdf. There are also pictures to help set the eccentric orientation during assembly.
Also a .step file is included if you want to make changes.
Slider_3 was optimized for the single cylinder engine and may be a better option for this engine too. It works well with Slider_2
Here are a couple videos of the engine in action.
Unassociated tags: air powered, sliding valve, steam engine
Printer Brand: Prusa
Printer: I3 MK3S
Supports: Yes
Infill: Varies
Notes:
Support where needed, many parts don't need it.
Infill 100% on rotating components for sure. Flywheels need the mass.
Printed this in PLA for a fit and function test, seems to work ok.
The author marked this model as their own original creation. Imported from Thingiverse.