Maxwell Hemmens 3/4" x 3/4" marine steam engine No.2

My largest engine, the Maxwell Hemmens single cylinder slide valve marine engine. 5.4 cm3.
A temperamental engine, difficult boiler to fill, sometimes totally refuses to start, drinks gas and steam, and she always burns me. Unfortunately the water pump is not working in this video, but besides that this gives a good idea of the performance of this engine and boiler. The boiler comes with a grate and ash box for coal firing. I've added a gas tank to this plant, but I am not using it this time.

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Science & Technology

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• stevenson's linkage

[mechanicsnut]

very good looking engine and boiler! I can't believe that she is that tempermental? I wish I had one! Great shot of the blowdown!

[mnewlyn]

@mechanicsnut I've converted it back to coal now, and it performs much better.

[mnewlyn]

Thank you, yes, the boiler is Hemmens too. They also sold horizontal boiler.

[1CaptainAustralia1]

good looking engine

[francovance1]

Very nice engine/boiler arrangement- does the boiler come from the same manufacturer?