| New Zealand F class |
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| Specifications |
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Configuration:
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| • Whyte | 0-6-0ST |
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| Driver dia. | 36 in (914 mm) |
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| Wheelbase | 10 ft 6 in (3,200 mm) |
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| Length | 23 ft 3+1⁄2 in (7,099 mm) |
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| Loco weight | 19.2 long tons
(21.5 short tons; 19.5 tonnes) |
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| Fuel type | Coal |
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| Fuel capacity | 0.95 long tons
(1.06 short tons; 0.97 tonnes) |
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| Water cap. | 350 imp gal (1,600 L; 420 US gal) |
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| Firebox: | |
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| • Grate area | 9.5 sq ft (0.88 m2) |
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| Boiler pressure | 130 psi (0.90 MPa) |
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| Heating surface | 486 sq ft (45.2 m2) |
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| Cylinders | Two, outside |
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| Cylinder size | 10.5 in × 18 in
(267 mm × 457 mm) |
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The NZR F class was the first important class of steam locomotive built to operate on New Zealand's railway network after the national gauge of 3 ft 6 in (1,067 mm) was adopted. The first locomotives built for the new gauge railways were two E class double Fairlies for the Dunedin and Port Chalmers Railway Company. The F class was the first class ordered by the central government, and between 1872 and 1888, a total of eighty-eight members of the class were constructed.
