British Rail Class 116

British Rail Class 116
Class 116 near Kenilworth in 1976
Interior
In service	1957–1995
Manufacturer	Derby Litchurch Lane Works
Built at	Derby
Family name	First generation
Replaced	Steam locomotives and carriages
Constructed	1957–1961
Number built	DMBS: 108 DMS: 108 TC: 94
Number preserved	DMBS: 5 TC: 1
Number scrapped	DMBS: 103 DMS: 108 TC: 93
Formation	2 or 3 cars per trainset
Capacity	DMBS: 85 second DMS: 95 second TC: 28 first, 74 second
Operator	British Rail
Specifications
Car body construction	Steel
Car length	64 ft 0 in (19.51 m)
Width	9 ft 3 in (2.82 m)
Height	12 ft 4+1⁄2 in (3.77 m)
Maximum speed	70 mph (113 km/h)
Weight	Power cars: 36 long tons 0 cwt (80,600 lb or 36.6 t), Trailer cars: 28 long tons 10 cwt (63,800 lb or 29 t)
Prime mover	Two BUT of 150 hp (112 kW) per power car
Power output	600 hp (447 kW) per set
Multiple working	■ Blue Square
Track gauge	4 ft 8+1⁄2 in (1,435 mm)

The British Rail Class 116 diesel multiple units were built by BR Derby from 1957 to 1961. Introduced as part of the British Railways Modernisation Plan in the mid-1950s, as with other first generation DMUs the 116 was intended to replace steam trains and reduce costs across the rail network. Alongside Metro-Cammell, BR Derby had prior experience with DMUs, having developed a Lightweight Unit, and so was awarded a contract for a new design.