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British Railway Steam Locomotive

Please read this statement on the accuracy of the data shown below

Note: To Obtain Consistency in the Steam System, Shed Codes used are those Registered at Nationalisation on 1st January 1948
2nd Grouping Number
1st Grouping Number
2nd Pre Grouping Number
1st Pre Grouping Number
Works/Lot Number
Name66 Squadron
Class CodeWCBB
1948 Shed71B Bournemouth
Last Shed72A Exmouth Junction
Disposal detailsEastleigh Works (B.R.)
DisposalCut Up
Disposal Date31/03/1964

Class Information

Introduced 1945. Bulleid 'West Country' and 'Battle of Britain' lightweight development of his 'Merchant Navy' Class with air smoothed casing, high boiler pressure, multiple-jet blastpipe and chain-driven Bulleid valve gear.

Locod originally built for use on the Eastern Section were given 'Battle of Britain' names, While locos originally built for use in the West of England were given 'West Country' names.

Although separately called 'West Country' and 'Battle of Britain' Classes, there were no design differences, the locomotives being identical, apart for their names.

(a) Temporarily converted for oil burning in 1947, then reconverted back.

(b) Rebuilt from 1957 with lower boiler pressure, Walschaerts valve gear, multiple-jet blastpipe and large diameter chimney. Air smoothing removed.

(c) 34036 = both (a) and (b)

(e) 34064 Fitted with Geisl oblong ejector in 1962.

Loco 86 tons 0 cwt, 90 tons 1 cwt (b) Driving Wheel: 6' 2"
Tend 40 tons 10 cwt to Boil Press: 280lb/sq in Su then reduced
50 tons 0 cwt (various) to 250lb/sq in Su; 250lb/sq in Su (b)
Cylinders: Valve Gear: Bulleid (piston valves)
Walschaerts (piston valves)(b)
Three 16 3/8" x 24" TE: 31,050 lb, reduced to 27,515 lb; 27,515 lb (b)

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