Ken Stuempges Atkinson Cycle engine

Congratulations to Ken Stuempges who just completed building the Atkinson Cycle engine. He sent me these photos of his great looking engine and he writes the following. . .

I had the opportunity of seeing Dave Smith's engine at a small show in Shell Knob MO. last June. He and another gentleman were there with their Atkinson's. I bought the book, made the patterns and castings, and just completed the engine. I made a few changes (doesn't everyone?) but they are minor. It runs great, but the carb is a little "touchy", and I want to balance the flywheel yet. . . .

I made the water jacket out of a piece of 3" round Aluminum bar stock, milled flat topand bottom, and hollowed out to provide a space around the cylinder, then press-fittedthe cylinder in. The base for it is a small "lost foam" casting. I used lost foam because of the complexity of the shape. I also used a little lost foam casting for the rocker armbracket. I also made the oiler. The finish I used is Powder-Coat. This is my first ICengine, after 4 stirling and 4 steam types.

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