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British Rail 10100 facts for kids

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British Rail 10100
Power type Diesel-mechanical
Builder LMS, Derby Works
Build date 1952
Configuration 4-8-4
UIC classification 2'D2'
Gauge 4 ft 8 12 in (1,435 mm)
Leading wheel diameter 39 in (0.991 m)
Driver diameter 51 in (1.295 m)
Wheel diameter 51 in (1,300 mm) driving,
39 in (990 mm) pony
Minimum curve 5 chains (100 m)
Wheelbase 41 ft 4 in (12.60 m) 41 ft 4 in (12.60 m)
Length 50 ft 0 in (15.24 m) 50 ft 0 in (15.24 m)
Width 9 ft 0 in (2.74 m) 9 ft 0 in (2.74 m)
Height 13 ft 0 in (3.96 m) 13 ft 0 in (3.96 m)
Locomotive weight 120 long tons (122 t)
Fuel capacity 720 imp gal (3,300 L; 860 US gal)
Coolant capacity 60 imp gal (270 L; 72 US gal)
Water capacity 500 imp gal (2,300 L; 600 US gal)
Prime mover Paxman 12RPH, 4 off
Transmission Fell central gearbox
Top speed 84 mph (135 km/h)
Power output 2,000 bhp (1,500 kW)
Tractive effort 25,000 lbf (111 kN)
Train heating Steam generator
Train brakes Vacuum
Career British Railways
Power class 6P5F, later Type 4
Number 10100
Nicknames Fell locomotive
Retired September 1958
Scrapped Derby Works, January 1960

British Railways 10100 was an unusual experimental diesel locomotive known informally as The Fell Diesel Locomotive (after Lt. Col. L.F.R. Fell, who was one of the designers). It was the joint production of Davey Paxman & Co, Shell Refining & Marketing Co and Lt-Col L.F.R. Fell, built for them by the London, Midland and Scottish Railway at Derby. Sir Harry Ricardo was also involved. By the time it emerged in 1950, nationalisation had taken place and it carried British Railways livery. The locomotive had six diesel engines, four of them used for traction. The auxiliary engines drove the pressure-chargers for the main engines and the purpose of this arrangement was to enable the main engines to deliver very high torque at low crankshaft speed.

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