Description
I built the Roxy from drawing bought in Germany.
I have changed a few things according to my own insight in material and execution.
The power piston is 30 mm and is made of bronze, the cylinder is made of steel, and the piston stroke is 38 mm. The displacer piston is 34 mm and is made of aluminum and the cylinder is made of steel. Flywheel diameter is 149 mm and is 25 mm wide and made of aluminum, the pulley diameter is 56 mm and is made of aluminum