Derby Works BR 11

Built by Derby Works, Darlington Works

Top speed

32 km/h

20 mph

Weight

48 t

105,822 lb

Length

8.88 m

29 ft 2 in

Track gauge

1,435 mm

Standard gauge

Years built

1945–1952

120 units

Axle arrangement

Overview of the Derby Works BR 11

Discover the robust BR 11 diesel locomotive, a testament to British engineering from 1945-1952.

Built by Derby and Darlington Works for British Railways Board, this iconic locomotive was a workhorse on the UK's rail network.

With a weight of 48 tonnes and a tractive effort of 155 kN, it was designed for demanding tasks, reaching a top speed of 32 km/h.

The BR 11 boasts practical dimensions, measuring 8.88 meters in length, 2.57 meters in width, and 3.8 meters in height, with a standard gauge of 1435 mm.

Its UIC axle classification of C highlights its suitability for the railway infrastructure of its era.

Explore the history and capabilities of this durable and reliable diesel locomotive.

The BR 11, a symbol of power and endurance on British rails.

Derby Works BR 11 technical specifications

	Value	Imperial / US
Series	BR 11
Built by	Derby Works, Darlington Works · 1945–1952120 units
Top speed	32 km/h20 mph	20 mph
Tractive effort	155 kN34,845 lbf	34,845 lbf
Track gauge	1,435 mmStandard gauge4 ft 8½ in	4 ft 8½ in
UIC axle arrangement	C
Length	8.88 m29 ft 2 in	29 ft 2 in
Width	2.57 m8 ft 5 in	8 ft 5 in
Height	3.8 m12 ft 6 in	12 ft 6 in
Weight	48 t105,822 lb	105,822 lb