GWR 7200 Class

The GWR 7200 Class was a fleet of 54 heavy 2-8-2 tank steam locomotives rebuilt at Swindon Works between 1934 and 1939 from the older GWR 4200 and 5200 Class 2-8-0 tanks. Designed by Charles Collett for the heavy South Wales coal traffic, the class was the GWR's heaviest tank engine and one of the heaviest tank engines ever built in Britain. Three examples have survived into preservation.

By the early 1930s the older 4200/5200 Class 2-8-0 tanks were proving inadequate for South Wales coal work: their 3-ton bunker capacity required frequent refuelling stops on long coal trips from the valleys to the docks, and the side tanks held only 1,800 gallons of water. Collett's solution was to rebuild older 4200/5200 engines as 2-8-2 tanks, fitting a new pony truck behind the rear coupled axle to support a much larger bunker (6 tons) and increased water capacity (2,500 gallons). The result was the 7200 Class, which could handle a full South Wales coal trip without refuelling.

The class was concentrated overwhelmingly in South Wales: Newport Ebbw Junction, Cardiff Cathays, Aberdare, Tondu, Pontypool Road, and Severn Tunnel Junction. They worked the South Wales coal trains from the valleys to the docks at Newport, Cardiff, Barry, and Swansea. Withdrawals began in the late 1950s as the BR Standard Class 9F displaced the older heavy mineral types, and the class was decimated through the early 1960s with the last in service withdrawn in 1965.

Three 7200s have survived: 7202 at Didcot, the prototype 7200 also at Didcot, and 7229 at the Severn Valley Railway. All have been at various stages of overhaul during their preservation careers, and the class is one of the few preserved heavy tank engines anywhere in Britain.

Design and development

Charles Collett succeeded George Jackson Churchward as locomotive engineer of the GWR in 1922 and inherited the older 4200 and 5200 Class 2-8-0 tanks of the early 1900s, used for South Wales coal traffic. By the early 1930s the older engines were proving inadequate: their 3-ton bunker capacity required frequent refuelling stops on long coal trips from the valleys to the docks, and the side tanks held only 1,800 gallons of water.

Collett's solution was to rebuild older 4200/5200 engines as 2-8-2 tanks, fitting a new pony truck behind the rear coupled axle to support a much larger bunker (6 tons) and increased water capacity (2,500 gallons). The result was the 7200 Class, which could handle a full South Wales coal trip without refuelling.

54 engines were rebuilt at Swindon Works between 1934 and 1939. The class was the GWR's heaviest tank engine and one of the heaviest tank engines ever built in Britain.

Service and withdrawals

The 7200s spent their working lives on South Wales coal traffic, hauling the long, heavy mineral trains from the valleys to the docks. Withdrawals began in the late 1950s as the BR Standard Class 9F displaced the older heavy mineral types. The class was decimated through the early 1960s and the last in service was withdrawn in 1965.

Identification features

A heavy, purposeful 2-8-2 tank with a tapered Belpaire boiler, a tall stovepipe chimney, side tanks reaching to the smokebox, and a large rectangular bunker behind the cab. The trailing pony truck under the bunker is the visible difference between the 7200 and the older 4200/5200 2-8-0 tanks.

Numbers and names

7200–7253
  1. 7200
  2. 7201
  3. 7202
  4. 7203
  5. 7204
  6. 7205
  7. 7206
  8. 7207
  9. 7208
  10. 7209
  11. 7210
  12. 7211
  13. 7212
  14. 7213
  15. 7214
  16. 7215
  17. 7216
  18. 7217
  19. 7218
  20. 7219
  21. 7220
  22. 7221
  23. 7222
  24. 7223
  25. 7224
  26. 7225
  27. 7226
  28. 7227
  29. 7228
  30. 7229
  31. 7230
  32. 7231
  33. 7232
  34. 7233
  35. 7234
  36. 7235
  37. 7236
  38. 7237
  39. 7238
  40. 7239
  41. 7240
  42. 7241
  43. 7242
  44. 7243
  45. 7244
  46. 7245
  47. 7246
  48. 7247
  49. 7248
  50. 7249
  51. 7250
  52. 7251
  53. 7252
  54. 7253

GWR 7200 to 7253. The class was rebuilt from older 4200 and 5200 Class 2-8-0 tanks; the rebuild involved fitting a new pony truck behind the rear coupled axle to convert the 2-8-0T to 2-8-2T, plus a larger bunker and additional water capacity for longer South Wales runs without refuelling.

Notable locomotives

Three 7200s have survived in preservation. 7200 (the prototype, rebuilt from 5275 in 1934) is preserved at the Didcot Railway Centre. 7202 is preserved at the Didcot Railway Centre. 7229 is preserved at the Severn Valley Railway. All three have been at various stages of overhaul and restoration through their preservation careers.

Allocations and regions

The class was concentrated overwhelmingly in South Wales: Newport Ebbw Junction, Cardiff Cathays, Aberdare, Tondu, Pontypool Road, and Severn Tunnel Junction. They worked the South Wales coal trains from the valleys to the docks at Newport, Cardiff, Barry, and Swansea, where the heavy gradients and the need to minimise refuelling stops favoured the larger tank capacity of the 7200 over the older 4200/5200.

Livery history

The class was outshopped from new in GWR-style green with the GWR roundel on the side tanks. British Railways from 1948 painted the class in plain mixed-traffic black with the early lion-and-wheel emblem. Preserved examples have appeared in both GWR-period green and BR plain black liveries.