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Tuesday 13 March 2012

GWR 56XX and 66XX 0-6-2 tanks

The 66XX and 56XX 0-6-2 tanks were the workhorses of the South Wales coal traffic. I have heard them referred to as 'Pocket Rockets'


Configuration0-6-2T
UIC classificationC1'ht
Gauge4 ft 12 in (1,435 mm)
Driver diameter4 ft 7 12 in (1.410 m)
Fuel typeCoal
Fuel capacity3.75 long tons (3.81 t)
Water capacity1,900 imp gal (8,600 l; 2,300 US gal)
Boiler pressure200 psi (1.38 MPa)
Superheater typeYes
CylindersTwo, inside
Cylinder size18 × 26 in (460 × 660 mm)
Valve gearStephenson's



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