Darlington Works 25/1

Built by Beyer & Peacock, Crewe Works, Darlington Works, Derby Works

Top speed

145 km/h

90 mph

Power output

932 kW

1,250 hp

Length

15.39 m

50 ft 6 in

Track gauge

1,435 mm

Standard gauge

Axle arrangement

Bo'Bo'

Overview of the Darlington Works 25/1

Discover the impressive 25/1 diesel locomotive, a robust piece of British railway engineering.

This powerful machine boasts a Bo'Bo' axle configuration, delivering 932 kW of power and reaching a top speed of 145 km/h.

With a length of 15.39 meters, the 25/1 series is a testament to the UK's railway history, built by renowned manufacturers like Beyer & Peacock, and Crewe, Darlington, and Derby Works.

Today, this locomotive class continues to serve and be preserved by private owner groups and heritage railways like the North Norfolk Railway.

Explore the legacy of the 25/1 and its enduring presence on the rails.

Darlington Works 25/1 technical specifications

	Value	Imperial / US
Series	BR25
Built by	Beyer & Peacock, Crewe Works, Darlington Works, Derby Works
Top speed	145 km/h90 mph	90 mph
Power output	932 kW1,250 hp	1,250 hp
Tractive effort	170 kN38,218 lbf	38,218 lbf
Prime mover	Sulzer 6LDA28-B
Track gauge	1,435 mmStandard gauge4 ft 8½ in	4 ft 8½ in
UIC axle arrangement	Bo'Bo'
Length	15.39 m50 ft 6 in	50 ft 6 in
Width	2.77 m9 ft 1 in	9 ft 1 in
Height	3.86 m12 ft 8 in	12 ft 8 in

Source of the data: en.wikipedia.orgView this model on trainspo.com Spotted an error? Let us know

Operators of the Darlington Works 25/1

Railway companies that have operated the 25/1, with the class designation used by each of them.

Operator	Class	Country
British Railways Board	BR 25/1	United Kingdom
North Norfolk Railway	NNR 25/1	United Kingdom
Private owners group	@private-uk 25/1	United Kingdom
Private owners group	@private-uk 25/1	United Kingdom