| Tasmanian Government Railways M class |
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| Specifications |
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Configuration:
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| • Whyte | 4-6-2 |
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| Gauge | 1,067 mm (3 ft 6 in) |
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| Leading dia. | 2 ft 2.5 in (0.673 m) |
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| Driver dia. | M: 4 ft 7 in (1,397 mm)
MA: M: 4 ft 0 in (1,219 mm) |
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| Trailing dia. | 2 ft 4+1⁄2 in (0.724 m) |
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| Length | 59 ft 2+3⁄4 in (18.053 m) |
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| Axle load | - Loco: 10.20 long tons (10.4 t)
- Tender: 10.60 long tons (10.8 t)
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| Adhesive weight | 37.25 long tons (37.8 t) |
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| Loco weight | 54.20 long tons (55.1 t) |
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| Tender weight | 42.40 long tons (43.1 t) |
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| Fuel type | Coal |
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| Fuel capacity | 6 long tons (6.1 t) |
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| Water cap. | 4,000 imp gal (18,184.4 L) |
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| Firebox: | |
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| • Grate area | 23.1 sq ft (2.146 m2) |
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| Boiler pressure | 180 lbf/in2 (1.24 MPa) |
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| Heating surface: | |
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| • Firebox | 371 sq ft (34.5 m2) |
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| • Tubes | 601 sq ft (55.8 m2) |
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| • Flues | 371 sq ft (34.5 m2) |
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Superheater:
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| • Type | 18 element |
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| • Heating area | 371 sq ft (34.5 m2) |
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| Cylinders | 2 outside |
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| Cylinder size | 16 in × 24 in (406 mm × 610 mm) |
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The Tasmanian Government Railways M class is a class of 4-6-2 steam locomotives operated by the Tasmanian Government Railways.
