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British Rail Class 74 facts for kids

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British Rail Class 74
74 003 in BR blue with full yellow ends
Power type Electro-diesel
Builder British RailwaysDoncaster Works; rebuilt BR Crewe Works
Build date 1958–1960; Rebuilt 1967–1968
Total production 10 (rebuilt)
Configuration Bo-Bo
UIC classification Bo'Bo'
Gauge 4 ft 8 12 in (1,435 mm)
Wheel diameter 4 ft 0 in (1.219 m)
Locomotive weight 77 long tons (78 t)
Electric system(s) 650–750 V Direct Current
Current collection method Third rail
Prime mover Paxman 6YJXL
Traction motors English Electric 532A, 4 off
Power output Electric (continuous): 2,300 hp (1,715 kW)
Electric (one-hour): 2,552 hp (1,903 kW)
Engine: 650 bhp (485 kW)
Tractive effort Electric: 47,500 lbf (211.3 kN)
Diesel: 40,000 lbf (177.9 kN)
Train heating Electric Train Heating
Train brakes Vacuum, Air, Electro-Pneumatic
Career British Railways’ Southern Region
Number E6101–E6110
Axle load class Route availability 7
Disposition All scrapped

British Rail class 74 was an electro-diesel locomotive that operated on the Southern Region of British Railways, rebuilt from redundant Class 71 locomotives in the late 1960s. An electro-diesel locomotive is one that can operate either from an electrical supply, such as overhead lines or an energized third rail, or from an onboard diesel engine.

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