British Rail Class 41 (HST)

British Rail Class 41 (HST)
Type and origin Power type Diesel-elctric Builder BREL Crewe Works Build date 1972 Total produced 2
Specifications Configuration: ​  • Whyte Bo-Bo  • UIC B'B' Gauge 4 ft 8 1⁄2 in (1,435 mm) standard gauge Wheel diameter 3 ft 4 in (1.016 m) Wheelbase 42 ft 4 in (12.90 m) Length 56 ft 4 in (17.17 m) Width 8 ft 11 in (2.72 m) Height 18 ft 11 in (5.77 m) Loco weight 68.5 tonnes (67.4 long tons; 75.5 short tons) Prime mover Paxman Valenta 12RP200L Traction motors Brush TMH68-46, frame mounted MU working Within class only Train heating Electric Train Heat Train brakes Air
Performance figures Top speed 125 mph (201 km/h) Power output Engine: 2,500 bhp (1,864 kW) Tractive effort 17,980 lbf (80.0 kN)
Career Railroad(s) British Rail Number 41001–41002; later ADB975812–813 Axle load class Route availability 6 Disposition preserved

41001 front view

41001 rear/side view

The British Rail Class 41 was the original classification for the power cars of the prototype High Speed Train. However, the train was later re-classified as a diesel-electric multiple unit, and the whole set became Class 252. They were of Bo-Bo wheel arrangement.