British Rail Class 104
The British Rail Class 104 diesel multiple units were built by Birmingham Railway Carriage and Wagon Company from 1957 to 1959.
| British Rail Class 104 | |
|---|---|
Class 104 formed from vehicles M50564, M59182, M50594 at Tottenham Hale in March 1976 | |
| In service | 1957–1993 |
| Manufacturer | Birmingham Railway Carriage and Wagon Company |
| Family name | First generation |
| Replaced | Steam locomotives and carriages |
| Constructed | 1957–1959 |
| Number built | 71 DMBS, 108 DMCL, 15 DTCL, 56 TCL, 26 TBSL, 26 TSL. Total: 302 cars |
| Number preserved | 13 |
| Formation | 2 car sets: DMBS-DTCL 3 car sets: DMBS-TCL-DMCL 4 cars sets:DMCL-TSL-TBSL-DMCL |
| Capacity | DMBS: 52, DMCL/DTCL: 12F 51S, TCL: 12F 54, TBSL: 51, TSL: 69 |
| Operators | British Rail |
| Specifications | |
| Car body construction | Steel |
| Car length | 57 ft 6 in (17.53 m) |
| Width | 9 ft 3 in (2.82 m) |
| Maximum speed | 70 mph (110 km/h) |
| Weight | DMCL/DMBS: 31 long tons (31.5 t), TBSL: 25 long tons (25.4 t), DTCL/TCL/TSL: 24 long tons (24.4 t) |
| Prime mover(s) | Two B.U.T. (Leyland) 6-cylinder diesels of 150 bhp each |
| Power output | 300 bhp (220 kW) |
| Transmission | Mechanical: 4 speed epicyclic gearbox |
| Braking system(s) | Vacuum |
| Safety system(s) | AWS |
| Track gauge | 4 ft 8+1⁄2 in (1,435 mm) |
A product of British Rail's Modernisation Plan of 1954, the 104s were designed for general branch line and commuter routes. The first units ordered were for the London Midland Region, with the majority of the class for use in North West of England. The Class 110 was a re-engineered version of the 104 with more powerful engines, but did not last as long in service. The 104s had asbestos insulation removed during the 1970s.
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