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British Rail Class 01

British Rail Class 01
Type and origin
Power typeDiesel-mechanical
BuilderAndrew Barclay Sons & Co.
Serial number395–398, 424
Build date1956 (4), 1958 (1)
Total produced5
Specifications
Configuration:
​
 • Whyte0-4-0
 • UICB
Gauge4 ft 8 1⁄2 in (1,435 mm)
Wheel diameter3 ft 2 in (0.965 m)
Minimum curve1.06 chains (21 m)
Wheelbase6 ft 0 in (1.83 m)
Length23 ft 8 in (7.21 m)
Width8 ft 5+1⁄2 in (2.578 m)
Height11 ft 10+1⁄2 in (3.620 m)
Loco weight25 long tons (25 t)
Fuel capacity325 imp gal (1,480 L; 390 US gal)
Prime moverGardner 6L3
RPM range1,200 (max)
Engine typeFour-stroke diesel
TransmissionMechanical: Wilson SE4, 4-speed epicyclic gear box, Vulcan-Sinclair type 23 rigid hydraulic coupling, to a Wiseman 15LGB reverse and final drive unit.
Loco brakeStraight Air
Train brakes11503–11506: none
18: Vaucuum
Performance figures
Top speed14.5 mph (23.3 km/h)
Power outputEngine: 153 hp (114 kW)
At rail: 102 hp (76 kW)
Tractive effort12,750 lbf (56.7 kN) (max)
Brakeforce15 long tons-force (150 kN)
Career
Railroad(s)British Railways
Number11503–11506, 81 (departmental); later D2953–D2956; later 01001–01002
Axle load classRA 1
Retired1966–1981

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British Rail's Class 01 diesel locomotives were a short wheelbase 0-4-0 diesel-mechanical design intended for use in areas with tight curves and limited clearance.

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