Mike Concannon’s Latest Steam Engine

I am building a new engine and making a video of my progress. The Video will be posted at a later date, But in the meantime, here’s a picture to whet your appetite..

This engine is going in my 1/36 scale Thames river paddle steam tug; she is about 41 inches long and weighs 18 pounds. Originally I had built a side lever engine for it, a scaled down version of the Arnold Johnson engine I had been working on at the Museum. I sailed the tug at the centennial pool event last february using a small air compressor instead of steam; problem was-no reverse. (reverse on these engines is by manually lifting off the valve rod, rotating the engine 180 degrees and re-engaging the valve -almost impossible on a small model).

This new engine is a development of a series of my own designs for a RC boat steam engines simplified for amateur construction; featuring twin double acting cylinders, piston valves and no lower cylinder heads; reversing is by an external valve exchanging inlet and exhaust, eliminating some valve operating mechanism.

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4 Responses to Mike Concannon’s Latest Steam Engine

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