| Dolgoch |
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| Specifications |
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Configuration:
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| • Whyte | 0-4-0WT |
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| Gauge | 2 ft 3 in (686 mm) |
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| Driver dia. | 2 ft 4 in (711 mm) |
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| Wheelbase | 6 ft 6 in (1.98 m) |
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| Length | 17 ft 5 in (5.31 m) |
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| Loco weight | 10 long tons 5 hundredweight (11.5 short tons; 10.4 t) |
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| Boiler pressure | 150 lbf/in2 (1.03 MPa) |
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| Cylinders | Two, outside |
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| Cylinder size | 7+5⁄8 in × 16 in (194 mm × 406 mm) |
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Dolgoch is a narrow gauge 0-4-0WT steam locomotive. It was built by Fletcher, Jennings & Co. and is one of the oldest locomotives still in active service. It was delivered to the Talyllyn Railway in 1866 and continues to run on this railway to this day.
Dolgoch was the only serviceable locomotive on the Talyllyn Railway when it was preserved by volunteers in 1951 and kept the railway running during this time.
