| WAGR M/Ms class |
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| Type and origin |
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| Power type | Steam |
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| Designer | Beyer, Peacock & Co |
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| Builder | Beyer, Peacock & Co |
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| Serial number | 5477-5482, 5665-5671 |
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| Build date | 1911, 1913 |
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| Total produced | 13 |
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| Specifications |
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Configuration:
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| • Whyte | 2-6-0+0-6-2 (Garratt) |
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| • UIC | - M: (1′C)(C1′) n4t
- Ms: (1′C)(C1′) h4t
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| Gauge | 3 ft 6 in (1,067 mm) |
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| Loco weight | M: 68 long tons 16 cwt (154,100 lb or 69.9 t)
Ms: 69 long tons 16 cwt (156,400 lb or 70.9 t) |
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| Fuel type | Coal |
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| Fuel capacity | 4 long tons (4.1 t) |
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| Water cap. | 2,000 imp gal (9,100 L; 2,400 US gal) |
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| Firebox: | |
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| • Grate area | 22.6 sq ft (2.10 m2) |
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| Boiler pressure | - M: 175 psi (1.21 MPa)
- Ms: 160 psi (1.10 MPa)
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| Heating surface: | |
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| • Firebox | 107 sq ft (9.9 m2) |
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| • Tubes | - M: 1,233 sq ft (114.5 m2)
- Ms: 960 sq ft (89 m2)
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| • Total surface | - M: 1,340 sq ft (124 m2)
- Ms: 1,067 sq ft (99.1 m2)
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Superheater:
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| • Type | |
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| • Heating area | - M: N/A
- Ms: 199 sq ft (18.5 m2)
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| Cylinders | 4 (Garratt) |
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| Cylinder size | - M: 12.5 in × 20 in (318 mm × 508 mm)
- Ms: 13.25 in × 20 in (337 mm × 508 mm)
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The WAGR M class was a class of 2-6-0+0-6-2 Garratt-type articulated steam locomotives operated by the Western Australian Government Railways (WAGR) between 1912 and 1955. A total of 13 were built by Beyer, Peacock & Co, Manchester in two batches.
