British Rail Class 41 (HST)

Specifications
Specifications
Configuration:;
• UIC	Bo′Bo′
• Commonwealth	Bo-Bo
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	12 ft 10 in (3.91 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	415 V AC 3-phase (prototype); 1000 V DC Electric Train Heat (preservation);
Train brakes	Air

British Rail Class 41 (HST)
British Rail Class 41 (HST)
	41001 at the Railway Technical Centre in 1972
Power type
Type and origin
Power type	Diesel-electric
Builder	BREL Crewe Works
Build date	1972
Total produced	2
Configuration:;
Specifications
Configuration:;
• UIC	Bo′Bo′
• Commonwealth	Bo-Bo
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	12 ft 10 in (3.91 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	415 V AC 3-phase (prototype); 1000 V DC Electric Train Heat (preservation);
Train brakes	Air
Maximum speed
Performance figures
Maximum speed	125 mph (201 km/h)
Power output	Engine: 2,250 bhp (1,678 kW)
Tractive effort	17,980 lbf (80.0 kN)
Operators
Career
Operators	British Rail
Numbers	41001–41002; 43000-43001 (While 252001); later ADB975812–813
Axle load class	Route availability 5
Withdrawn	January 1982
Disposition	1 preserved, 1 scrapped

The British Rail Class 41 were two powercars built in 1972 by British Rail Engineering Limited's Crewe Works to operate with the prototype High Speed Train (HST) with Mark 3 carriages.

^ Haresnape, Brian (June 1983). British Rail Fleet Survey 5: High Speed Trains. Shepperton: Ian Allan Publishing. p. 41. ISBN 0-7110-1297-0. GE/0683.
^ Maclean, Stuart (4 June 2014). "NRM HST prototype 41001". National Preservation. Archived from the original on 26 November 2015. Retrieved 25 November 2015. has its original 110 V/1000 V Auxiliary Alternator fitted so isn't compatible with production HST electronics. … standard DC ETH rather than the 415 V AC of an HST so more useful for a role on preserved railways. … not being able to provide train supply to an HST set,