| NZR D class |
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| Specifications |
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Configuration:
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| • Whyte | 2-4-0T |
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| • UIC | 1B nt |
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| Gauge | 3 ft 6 in (1,067 mm) |
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| Driver dia. | 36 in (914 mm) |
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| Length | 21 ft 6 in (6.55 m) |
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| Adhesive weight | 11 long tons 10 cwt (25,800 lb or 11.7 t) |
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| Loco weight | 14 long tons 14 cwt (32,900 lb or 14.9 t) |
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| Fuel type | Coal |
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| Fuel capacity | 0 long tons 11 cwt (1,200 lb or 0.6 t) |
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| Water cap. | 300 imp gal (1,400 L; 360 US gal) |
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| Firebox: | |
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| • Grate area | 7.3 sq ft (0.68 m2) |
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| Boiler pressure | 130 psi (0.90 MPa) |
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| Heating surface | 392 sq ft (36.4 m2) |
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| Cylinders | Two, outside |
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| Cylinder size | 9.5 in × 18 in (241 mm × 457 mm) |
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| Career |
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| Operators | Public Works Department
New Zealand Railways Department |
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| Number in class | 35 |
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| Numbers | 6, 16, 18, 46-51, 108-9, 130-1, 137-145, 149, 169-171, 195-98, 221-2, 240, 315, 578 |
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| First run | May 1874 |
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| Last run | March 1927 |
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| Disposition | Seven preserved, one converted into diesel-mechanical, remainder scrapped |
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NZR D class steam tank locomotives operated on New Zealand's national railway network. The first entered service in 1874 all had been withdrawn by the end of 1927, which allowed the D classification to be used again in 1929.
