Square Engine

This is a novelty engine."Cylinder" is a 1/2" square brass tubing soldered to a brass frame. The piston is a round brass tube placed crossways to take the oscillating motion from the Crank. You might say it is a round Piston in a square"Cylinder". The rest of the materials are optional. The model as shown has a 1-1/4"aluminum flywheel but it would perform better with the weight of one made of steel.