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3 1/2 inch gauge "Conway" - stock code 3912

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3 1/2 inch gauge
3 1/2 inch gauge
3 1/2 inch gauge
3 1/2 inch gauge
3 1/2 inch gauge
3 1/2 inch gauge
3 1/2 inch gauge
3 1/2 inch gauge
3 1/2 inch gauge
3 1/2 inch gauge
3 1/2 inch gauge

A 3 1/2 inch Hunslet to Martin Evans' "Conway" design - larger than the diminutive "Alice" class quarry engines, it's more like the "Port" class locomotives and makes for a decent-sized engine in this gauge.

Silver soldered copper boiler, working pressure 80psi, feed by injector and axle pump with auxiliary hand pump on the fooplate. Stephenson's valve gear with pole reverser in cab, mechanical "ratchless" lubricator on nearside running board.

Sam steamed this one last week in the workshop - there's a short clip of it running here.

Length 27 inches
Weight approx 70 pounds

gauge 3 1/2 inch