Bohaboy-Haas Poppet Valve Steam Engine

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2023_01_09: Finally got my hands on a Smart car engine and am making measurements. Stay tuned! :-)
2022_04_21:
--I had a major re-think on the design of this engine a while back. The full-size engine will be built by modifying an engine from a Smart For Two car. By using the bottom half, including the crankcase, crankshaft and connecting rods the 'hard part' is already don