| New Zealand E class locomotive (1906) |
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| Specifications |
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Configuration:
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| • Whyte | 2-6-6-0T |
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| Gauge | 3 ft 6 in (1,067 mm) |
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| Driver dia. | 36.5 in (0.927 m) |
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| Length | 37 ft 2 in (11.33 m) over couplers |
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| Adhesive weight | 61 long tons 2 cwt (136,900 lb or 62.1 t)
61 long tons 2 cwt (62.1 t; 68.4 short tons) |
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| Loco weight | 65 long tons 16 cwt (147,400 lb or 66.9 t)
65 long tons 16 cwt (66.9 t; 73.7 short tons) |
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| Fuel type | Coal |
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| Fuel capacity | 3 long tons 4 cwt (7,200 lb or 3.3 t)
3 long tons 4 cwt (3.3 t; 3.6 short tons) |
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| Water cap. | 1,250 imp gal (5,700 L; 1,500 US gal) |
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| Firebox: | |
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| • Grate area | 26.0 sq ft (2.42 m2) |
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| Boiler pressure | 200 lbf/in2 (1,400 kPa; 14 kgf/cm2) |
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| Heating surface | 1,540 sq ft (143 m2) |
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| Cylinders | 4 HP, 4 LP, Vauclain compound |
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| High-pressure cylinder | 9.5 in × 18 in (241 mm × 457 mm) |
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| Low-pressure cylinder | 16 in × 18 in (406 mm × 457 mm) |
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| Career |
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| Operators | NZGR |
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| Numbers | E 66 |
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| Nicknames | Pearson's Dream |
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| First run | 1906 |
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| Withdrawn | 1917 |
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| Disposition | Scrapped |
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The New Zealand E class locomotive comprised a single Mallet steam locomotive operated by New Zealand Railways (NZR) from 1906 until 1917. Classified as E 66 and nicknamed Pearson's Dream after its designer, it was an experimental Mallet locomotive designed to work on the Rimutaka Incline. The "E" classification was previously used by the Double Fairlie E class of 1872-75, but the classification was free as they had all been withdrawn by the time E 66 entered service. After the withdrawal of E 66, "E" was again re-used on the battery-electric E class of 1922. It was the only Mallet locomotive to operate for the NZR
