Indian steam locomotive class
Indian locomotive class HG |
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Specifications |
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Configuration:
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• Whyte | 2-8-0 |
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• UIC | 1'D n2 (HG class) 1'D h2 (HGS/HGC class) |
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Gauge | 1,676 mm (5 ft 6 in) |
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Leading dia. | 3 ft 7 in (1,090 mm) |
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Driver dia. | Variant A: 5 ft 1+1⁄2 in (1,562 mm) Variant B: 4 ft 8+1⁄2 in (1,435 mm) |
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Wheelbase: | |
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• Coupled | Variant A: 17 ft (5.2 m) Variant B: 16 ft (4.9 m) |
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• incl. tender | Variant A with 4000 gallon tender: 51 ft 6+7⁄8 in (15.719 m) Variant B with 4000 gallon tender: 50 ft 4+1⁄2 in (15.354 m) |
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Length:
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• Over buffers | Variant A with 4000 gallon tender: 61 ft 6+1⁄4 in (18.752 m) Variant B with 4000 gallon tender: 60 ft 3+7⁄8 in (18.386 m) |
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Width | 9 ft 6 in (2,900 mm) |
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Height | 13 ft 6 in (4,110 mm) |
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Axle load | Variant A: 16.3 long tons (16.6 t) Variant B: 15.7 long tons (16.0 t) |
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Fuel type | Coal, later converted to oil-firing |
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Fuel capacity | 7.6t of coal (3000/4000 gal tenders) 10.2t of coal (4500 gal tender) |
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Water cap. | 3,000 or 4,000 or 4,500 imp gal (14,000 or 18,000 or 20,000 L; 3,600 or 4,800 or 5,400 US gal) |
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Firebox: | |
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• Type | Belpaire |
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• Grate area | Variant A: 35 sq ft (3.3 m2) Variant B: 32 sq ft (3.0 m2) |
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Boiler pressure | 180 psi (12.4 bar; 12.7 kgf/cm2) |
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Superheater | Classes HGS & HGC: Schimdt |
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Cylinders | Two, outside |
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Cylinder size | Variant A: 21 in × 26 in (533 mm × 660 mm) Variant B: 20 in × 26 in (508 mm × 660 mm)[1] |
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Valve gear | Walschaerts |
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Valve type | Slide (HG class) Piston (HGS/HGC class) |
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Performance figures |
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Tractive effort | Starting at 11.2 bar boiler pressure: * Variant A: 146 kN (33,000 lbf) * Variant B: 134 kN (30,000 lbf) |
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Career |
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Operators | Indian Railways Pakistan Railways |
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Locale | British Raj (until 1947) India (from 1947) Pakistan (from 1947) |
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Retired | Up until 2006 |
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Preserved | 2 (India) 4 (Pakistan) |
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Disposition | At least six preserved, remainder scrapped. |
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The Class HG (Heavy Goods) is a 2-8-0 goods steam locomotive, which was one of seven standard classes of broad gauge steam locomotives designed by the British Engineering Standards Association (BESA) for use in the British Raj in the mid-1900s.
This design was used by various railway companies of the British Raj, later passing on to Indian Railways and Pakistan Railways after the partition, the latter of which continued using these locomotives into the 21st century to haul the Khyber Steam Safari on the rugged Khyber Pass Railway.