Radial Air Engine

This is a video of a simple, model oscillating radial air engine I built in 2007. In this video I am running this self-starting engine with an air compressor.
The plans for this engine came from McCabe's model engine website (http://npmccabe.tripod.com/steam.htm). I made a slight modification by using ball bearings and an outer bearing to make the crankshaft more stable. The cylinders are steel, and the pistons are brass rod. Each cylinder has one hole at the end of the bore for the inlet and exhaust port. The three manifold pieces are drilled for inlet and exhaust passage of the air from the compressor. It is routed as you can see from the manifold block at the back where the airline comes in. The flywheel was machined and mounted on a rotary table to mill the spokes. The engine has very little output power because it runs on less than 10psi air pressure.
This engine was a fun build, but it isn't an efficient style engine.
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