Derby Works 45/1

Built by Derby Works

Top speed

145 km/h

90 mph

Power output

1,491 kW

1,999 hp

Weight

135 t

297,624 lb

Length

20.7 m

67 ft 11 in

Track gauge

1,435 mm

Standard gauge

Axle arrangement

(1'Co)(Co'1)

Overview of the Derby Works 45/1

Explore the powerful BR 45/1 diesel locomotive, a significant piece of British railway history.

Built by Derby Works, this impressive locomotive boasts a UIC axle configuration of (1'Co)(Co'1) and delivers a formidable 1491 kW of power.

With a top speed of 145 km/h, the BR 45/1 is adept at handling demanding tasks in freight and passenger services.

Measuring 20.7 meters in length and weighing 135 tonnes, it represents robust engineering and enduring reliability within the British Railways Board fleet.

Derby Works 45/1 technical specifications

	Value	Imperial / US
Series	BR45
Built by	Derby Works
Top speed	145 km/h90 mph	90 mph
Power output	1,491 kW1,999 hp	1,999 hp
Tractive effort	245 kN55,078 lbf	55,078 lbf
Track gauge	1,435 mmStandard gauge4 ft 8½ in	4 ft 8½ in
UIC axle arrangement	(1'Co)(Co'1)
Length	20.7 m67 ft 11 in	67 ft 11 in
Width	2.71 m8 ft 11 in	8 ft 11 in
Height	3.91 m12 ft 10 in	12 ft 10 in
Weight	135 t297,624 lb	297,624 lb