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British Rail Class 45 facts for kids

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Derby Type 4
British Rail Class 45
Power type Diesel-electric
Builder British Railways’ Derby Works and Crewe Works
Build date 1960–1962
Total production 127
Configuration 1Co-Co1
UIC classification (1Co)'(Co1)'
Wheel diameter 3 ft 9 in (1.143 m)
Minimum curve 5 chains (100 m)
Wheelbase 59 ft 8 in (18.19 m)
Length 67 ft 11 in (20.70 m)
Width 8 ft 10+12 in (2.71 m)
Height 12 ft 10 in (3.91 m)
Locomotive weight 133 long tons (135 t)
Fuel capacity 840 imp gal (3,800 L; 1,010 US gal)
Prime mover Sulzer 12LDA28-B
Multiple working Blue Star
Top speed 90 mph (145 km/h)
Power output Engine: 2,500 bhp (1,864 kW)
At rail: 2,000 hp (1,491 kW)
Tractive effort Maximum: 55,000 lbf (245 kN)
Train heating 45/0: Steam generator
45/1: Electric Train Heat
Locomotive brakeforce 63 long tons-force (628 kN)
Train brakes Vacuum
Career British Railways
Number D11–D137; later 45001–45077, 45101–45150
Nicknames 'Peak'
Axle load class Route availability 7

The British Rail Class 45 also known as the Sulzer Type 4 diesel locomotives were built by British Rail at their Derby and Crewe Works between 1960 and 1962. They were the successors to the Class 44 locomotives. When initially put into service the locomotives were fitted with multi-unit working and steam heating boilers for passenger service. In the early 1970s fifty were fitted with electric train supply in place of their steam heating boilers, and assigned to work services on the Midland Main Line from London St Pancras to Nottingham, Derby and Sheffield. All were withdrawn from service by 1989.

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