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British Rail Class 12 facts for kids

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British Rail Class 12
Power type Diesel-electric
Builder British Railways’ Ashford Works
Order number SR 3413 (15), 3537 (11)
Build date 1949–1952
Total production 26
Configuration 0-6-0
UIC classification C
Gauge ft 8+12 in (1,435 mmstandard gauge
Wheel diameter 4 ft 6 in (1.372 m)
Wheelbase 11 ft 6 in (3.51 m)
Length 29 ft 5 12 in (8.98 m)
Width 9 ft 0 in (2.74 m)
Height 12 ft 8 12 in (3.87 m)
Locomotive weight 48 long tons (48.8 t)
Fuel capacity 660 imp gal (3,000 l; 790 US gal)
Prime mover English Electric 6KT
Traction motors English Electric 506A, 2 off
Transmission DC generator, DC traction motors, double reduction gearing
Multiple working Not fitted
Top speed 27.5 mph (44.3 km/h)
Power output Engine: 350 hp (261 kW)
Tractive effort Maximum: 24,600 lbf (109.4 kN)
Train heating None
Train brakes None; 15230–15232 Air from 1970
Career British Railways
Number 15211–15236
Axle load class RA 5

The British Rail Class 12 is a diesel locomotive built mainly for shunting duties.

This was the second batch of standard Southern Railway shunters based on the English Electric 6KT 350 hp (260 kW) diesel engine. These locomotives (BR numbers 15201-15203) were built by the SR in 1937 and were later classified D3/12.

The Class 12 locomotives were built at the BR Ashford Works over the period 1949–1952. They were numbered 15211–15236 and became Class 12. No locomotives survived long enough to acquire Class 12 TOPS numbers though.

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