Class of steam locomotive
Great Western Railway 6800 Class Specifications Configuration: • Whyte 4-6-0 • UIC 2′C h2 Gauge 4 ft 8+ 1 ⁄2 in (1,435 mm ) standard gauge Leading dia. 3 ft 0 in (0.914 m) Driver dia.5 ft 8 in (1.727 m) Minimum curve 8 chains (530 ft; 160 m) normal, 7 chains (460 ft; 140 m) slow Length 63 ft 0+ 1 ⁄4 in (19.21 m)Width 8 ft 11+ 1 ⁄4 in (2.724 m)Height 13 ft 0 in (3.962 m) Axle load 18 long tons 8 cwt (41,200 lb or 18.7 t) (20.6 short tons) Adhesive weight 55 long tons 2 cwt (123,400 lb or 56 t) (61.7 short tons) Loco weight 74 long tons 0 cwt (165,800 lb or 75.2 t) (82.9 short tons) full Fuel type Coal Fuel capacity 7 long tons 0 cwt (15,700 lb or 7.1 t) (7.8 short tons) Water cap. 3,500 imp gal (16,000 L; 4,200 US gal) Firebox: • Grate area 27.07 sq ft (2.515 m2 ) Boiler GWR Standard No. 1 Boiler pressure 225 psi (1.55 MPa ) Heating surface: • Firebox 154.78 sq ft (14.380 m2 ) • Tubes and flues 1,686.60 sq ft (156.690 m2 ) Superheater: • Heating area 4-element: 191.8 sq ft (17.82 m2 ), 6-element: 253.38 sq ft (23.540 m2 ) Cylinders Two, outside Cylinder size 18.5 in × 30 in (470 mm × 762 mm)
The Great Western Railway (GWR) 6800 Class or Grange Class was a mixed-traffic class of 4-6-0 steam locomotive, built to replace the GWR 4300 Class 2-6-0 . There were 80 in the class, all built at the Swindon works, using some reconditioned parts from withdrawn 4300 Class locomotives.