| British Rail Class 115 | |
|---|---|
.jpg) A Class 115 at Marylebone in April 1981. | |
| In service | 1960–1998 |
| Manufacturer | BR Derby |
| Family name | First generation |
| Replaced | Steam locomotives and carriages |
| Number built | 41 four-car sets |
| Number preserved | 15 cars
9 (DMBS) 4 (TCL) 2 (TS) |
| Successor | Class 165 |
| Formation | DMBS–TCL–TS–DMBS |
| Capacity | DMBS: 78 Second; TCL 30 First, 40 Second; TS: 106 Second; 4-car total: 30 First, 302 Second |
| Operators | British Rail |
| Lines served | Chiltern Main Line, London to Aylesbury Line |
| Specifications | |
| Car length | 63 ft 6 in (19.35 m) |
| Width | 9 ft 3 in (2.82 m) |
| Maximum speed | 70 mph (110 km/h) |
| Weight | 135 long tons (137 t; 151 short tons) trainset |
| Prime mover(s) | Two 230 hp (172 kW) BUT (Leyland Albion) per DMBS |
| Power output | 920 hp (686 kW) per set |
| Auxiliaries | Albion |
| Safety system(s) | AWS, Tripcock |
| Multiple working | ■ Blue Square |
| Track gauge | 4 ft 8+1⁄2 in (1,435 mm) |
The British Rail Class 115 diesel multiple units were 41 high-density sets which operated the outer-suburban services from Marylebone usually to destinations such as High Wycombe, Aylesbury and Banbury which are on the Chiltern Main Line and Great Central Main Line (now the London to Aylesbury Line). Sometimes, these sets used to operate 8- or 12-car-long expresses to Nottingham Victoria in the final years of the GCML. Coincidentally, Class 115 units operated services under Table 115 in the British Rail timetable.