| British Rail Class 110 (BRCW Calder Valley) | |
|---|---|
 | |
| In service | 1961 – 1991 |
| Manufacturer | BRCW |
| Family name | First generation |
| Replaced | Steam locomotives and carriages |
| Constructed | 1961–1962 |
| Refurbished | 1979-80 |
| Scrapped | 1963-1991 |
| Number built | 30 sets |
| Number preserved | One 3-car set, One 2-car set |
| Formation | Three-car sets: DMBC-TSL-DMCL (TSL removed from many sets in 1982) |
| Capacity | DMBC: 12 first, 33 second TSL: 72 second DMCL: 12 first 54 second |
| Operators | British Rail |
| Specifications | |
| Car length | 57 ft 6 in (17.53 m) |
| Width | 9 ft 3 in (2.82 m) |
| Height | 12 ft 9 in (3.89 m) |
| Maximum speed | 70 mph (113 km/h) |
| Weight | DMBC: 32 long tons 0 cwt (71,700 lb or 32.5 t) TSL: 24 long tons 0 cwt (53,800 lb or 24.4 t) DMCL: 31 long tons 10 cwt (70,600 lb or 32 t) |
| Prime mover(s) | Two Rolls-Royce C6NFLH engines per power car |
| Power output | 720 hp (537 kW) per set 180 bhp (130 kW) per engine |
| Transmission | 4-speed epicyclic gearbox |
| UIC classification | (1A)′(A1)′+2′2′+(1A)′(A1)′ |
| Braking system(s) | Vacuum |
| Safety system(s) | AWS |
| Coupling system | Screw-link |
| Multiple working | ■ Blue Square |
| Track gauge | 4 ft 8+1⁄2 in (1,435 mm) |
The Class 110 diesel multiple units were built by the Birmingham Railway Carriage and Wagon Company in conjunction with the Drewry Car Co. to operate services on the former Lancashire and Yorkshire main line. They originally entered service uniquely[clarification needed] in this region, which earned them the name of the 'Calder Valley' sets. They were an updated version of the Class 104, with more powerful engines, a revised cab design and raised bodyside window frames.