Air valve

This air engine was inspired by TomStanton Diaphragm Air Engine
https://www.thingiverse.com/thing:4663285

The TomStanton design is very simple and clever, but has one main drawback - the diaphragm with punched hole in the middle. From view point of mechanical strength and reliability this is not the best approach - the diaphragm is exposed to extreme forces and ware out.

One solution is to use proper air valve and control precisely the air flow.

See my first version of the air engine (still in construction), soon will update the data and add more details / pictures. Attached is the STEP model of the engine.

A short video showing how the engine works is on the following link:
https://youtu.be/09NNFS2ehyo

Thanks.