British Rail Class 23

British Rail Class 23, originally called English Electric Type 2, was a class of ten diesel-electric locomotives built by the English Electric Company in 1959. They were numbered from D5900 to D5909. The power unit was a Napier Deltic T9-29 9 cylinder engine of 1,100 bhp. This drove an EE generator, which powered the four traction motors. The Class 23 was nicknamed "Baby Deltic" because of its similarity to the Class 55.

English Electric Type 2
British Rail Class 23
“Baby Deltic” D5901 with the revised cab front.
Power type Diesel-electric
Builder English Electric at Vulcan Foundry
Build date 1959
Total production 10
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 7 in (1.092 m)
Minimum curve 4 chains (80 m)
Wheelbase 40 ft 6 in (12.34 m)
Length 52 ft 6 in (16.00 m)
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Height 12 ft 8 in (3.86 m)
Locomotive weight Lua error in Module:Convert at line 1850: attempt to index local 'en_value' (a nil value).
Fuel capacity 550 imp gal (2,500 l; 660 US gal)
Prime mover Napier T9-29 Deltic
Transmission DC generator, DC traction motors
Multiple working Blue star
Top speed 75 mph (121 km/h)
Power output Engine: Lua error in Module:Convert at line 1850: attempt to index local 'en_value' (a nil value).
Tractive effort Maximum: 47,000 lbf (209.1 kN)
Train heating Steam generator
Train brakes Vacuum
Career British Railways
Number D5900–D5909
Nicknames Baby Deltic
Axle load class Route availability


British Rail Class 23 Media