Specifications |
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Configuration:
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• Whyte | 4-8-2 (Mountain) |
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• UIC | 2'D1'h2 |
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Driver | 2nd coupled axle |
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Gauge | 3 ft 6 in (1,067 mm) Cape gauge |
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Leading dia. | 34 in (864 mm) |
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Coupled dia. | 63 in (1,600 mm) |
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Trailing dia. | 34 in (864 mm) |
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Tender wheels | 34 in (864 mm) |
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Minimum curve | 300 ft (91 m) |
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Wheelbase | ♠ 77 ft 8+1⁄2 in (23,686 mm) ♥ 78 ft 2+1⁄2 in (23,838 mm) |
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• Engine | 37 ft 1⁄2 in (11,290 mm) |
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• Leading | 7 ft 2 in (2,184 mm) |
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• Coupled | 16 ft 6 in (5,029 mm) |
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• Tender | 30 ft 8 in (9,347 mm) |
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• Tender bogie | 8 ft 8 in (2,642 mm) |
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Length:
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• Over couplers | 87 ft 2+1⁄4 in (26,575 mm) |
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Height | 12 ft 11+1⁄2 in (3,950 mm) |
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Frame type | Bar |
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Axle load | ♠ 18 LT 17 cwt (19,150 kg) ♥ 18 LT 14 cwt (19,000 kg) |
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• Leading | ♠ 20 LT 7 cwt (20,680 kg) ♥ 20 LT 17 cwt (21,180 kg) |
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• 1st coupled | ♠ 17 LT 16 cwt (18,090 kg) ♥ 17 LT 12 cwt (17,880 kg) |
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• 2nd coupled | ♠ 18 LT 17 cwt (19,150 kg) ♥ 18 LT 14 cwt (19,000 kg) |
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• 3rd coupled | ♠ 18 LT 15 cwt (19,050 kg) ♥ 18 LT 13 cwt (18,950 kg) |
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• 4th coupled | ♠ 17 LT 16 cwt (18,090 kg) ♥ 17 LT 11 cwt (17,830 kg) |
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• Trailing | ♠ 17 LT 8 cwt (17,680 kg) ♥ 17 LT 15 cwt (18,030 kg) |
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• Tender bogie | Bogie 1: ♠ 54 LT 14 cwt (55,580 kg) ♥ 53 LT 17 cwt (54,710 kg) Bogie 2: ♠ 54 LT (54,870 kg) ♥ 53 LT 17 cwt (54,710 kg) |
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• Tender axle | ♠ 18 LT (18,290 kg) ♥ 17 LT 19 cwt (18,240 kg) |
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Adhesive weight | ♠ 73 LT 4 cwt (74,370 kg) ♥ 72 LT 10 cwt (73,660 kg) |
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Loco weight | ♠ 110 LT 19 cwt (112,700 kg) ♥ 111 LT 2 cwt (112,900 kg) |
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Tender weight | ♠ 104 LT 5 cwt (105,900 kg) ♥ 107 LT 14 cwt (109,400 kg) |
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Total weight | ♠ 215 LT 4 cwt (218,700 kg) ♥ 218 LT 16 cwt (222,300 kg) |
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Tender type | EW (3-axle bogies) |
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Fuel type | Coal |
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Fuel capacity | 18 LT (18.3 t) |
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Water cap. | ♠ 9,200 imp gal (41,800 L) ♥ 9,500 imp gal (43,200 L) |
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Firebox: | |
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• Type | Round-top |
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• Grate area | 63 sq ft (5.9 m2) |
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Boiler:
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• Model | Watson Standard no. 3B |
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• Type | Domeless |
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• Pitch | 9 ft (2,743 mm) |
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• Diameter | 6 ft 2+1⁄4 in (1,886 mm) |
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• Tube plates | 22 ft 6 in (6,858 mm) |
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• Small tubes | 136: 2+1⁄2 in (64 mm) |
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• Large tubes | 36: 5+1⁄2 in (140 mm) |
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Boiler pressure | 225 psi (1,551 kPa) |
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Safety valve | Ross-pop |
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Heating surface: | |
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• Firebox | 206 sq ft (19.1 m2) |
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• Tubes | 3,168 sq ft (294.3 m2) |
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• Arch tubes | 26 sq ft (2.4 m2) |
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• Total surface | 3,400 sq ft (320 m2) |
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Superheater:
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• Heating area | 676 sq ft (62.8 m2) |
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Cylinders | Two |
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Cylinder size | 24 in (610 mm) bore 28 in (711 mm) stroke |
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Valve gear | Walschaerts |
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Valve type | Piston |
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Valve travel | 7+1⁄2 in (191 mm) |
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Couplers | AAR knuckle |
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