British Rail Class 25

The British Rail Class 25 diesel locomotives were originally known as British Railways Type 2. They were nicknamed Rats. 327 locomotives of this type were built between 1961 and 1967.

British Rail Class 25
Class 25 locomotive stands on Springs Branch Traction Maintenance Depot at Wigan
Power type Diesel-electric
Builder British RailwaysCrewe Works, Darlington Works and Derby Works; Beyer, Peacock & Co.
Build date 1961–1967
Total production 327
Configuration Bo-Bo
UIC classification Bo'Bo'
Gauge Lua error in package.lua at line 80: module 'Module:Track gauge/data' not found.
Wheel diameter 3 ft 9 in (1.143 m)
Minimum curve 4.5 chains (91 m)
Wheelbase 36 ft 6 in (11.125 m)
Length 50 ft 6 in (15.392 m)
Width 9 ft 1 in (2.769 m)
Height 12 ft 8 in (3.861 m)
Locomotive weight Lua error in Module:Convert at line 1850: attempt to index local 'en_value' (a nil value). to Lua error in Module:Convert at line 1850: attempt to index local 'en_value' (a nil value).
Fuel capacity 500 imp gal (2,300 l; 600 US gal)
Prime mover Sulzer 6LDA28-B
Transmission DC generator, DC traction motors
Multiple working Blue Star
Top speed 90 mph (145 km/h)
Power output Engine: 1,250 hp (932 kW)
Tractive effort Maximum: Lua error in Module:Convert at line 1850: attempt to index local 'en_value' (a nil value). to Lua error in Module:Convert at line 1850: attempt to index local 'en_value' (a nil value).
Train heating Steam generator
Locomotive brakeforce 38 long tons-force (380 kN)
Train brakes Vacuum
Career British Railways
Number D5151–D5299, D7500–D7677; later 25001–25327
Nicknames Rats
Axle load class Route availability 4


British Rail Class 25 Media