The prototype for this engine had extended piston rods on the front of the cylinder. I will use the boss shown on the left above as a mount for the extended piston rod cover (decoration only).
I made rings from 3-1/2 inch x 1/4 inch Cold Rolled Steel to fit over the ends of the cylinders because the steam ports were too close to the edge and I was afraid they would leak. The rings were pressed (approximately 0.002 inch press) on with Locktite No. 609.
Turning the outside diameter of the rings (all four were bolted together for this operation).
Each ring was bored to size for the end of the cylinders. I made the aluminum spacer shown above, behind the ring mounted in the six jaw chuck.
The photo above shows the setup I used to mill off excess material from the cylinder casting. I finished that section of the casting with an abrasive disc, so the material was slightly below the end rings.
The cylinder heads were made from 3-1/2 inch diameter cast iron. It took about twenty minutes to slice through the bar. I needed four slices!
The cylinder heads were turned from the cast iron stock.
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