British Rail Class 115
|British Rail Class 115|
A Class 115 at Marylebone in April 1981.
|Number built||41 four-car sets|
|Capacity||DMBS: 78 Second;
TCL 30 First, 40 Second;
TS: 106 Second;
4-car total: 30 First, 302 Second
|Line(s) served||Chiltern Main Line, London to Aylesbury Line|
|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|
|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 8-12 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.
Based on the basic Derby high density design, the sets are similar to Class 127 but were internally superior as the class had larger windows, better furnishings, lighting and wall surfaces.
The Marylebone sets, which were later transferred to Bletchley but remained on Chiltern Line duties (and finally to Old Oak Common), were declared surplus after the introduction of Class 165s, from 1991 onwards. While at Bletchley and Old Oak Common depots the class found use on the Gospel Oak to Barking Line, units being formed as power twins. They were, in turn, replaced on this line by Class 117 power twins, displaced from Paddington suburban duties.
The final class 115 working out of Marylebone was on 29 July 1992. The Tyseley vehicles survived a bit longer, until February 1994.
Some of the class briefly found their way on to the Redhill to Tonbridge Line to replace ageing DEMU sets. The line was electrified in 1993, in order to allow a diversionary route for the Eurostar, and the class 115s were replaced initially with Class 411 EMUs, then ex-Merseyrail Class 508 EMUs in 1998 (after privatisation).
|Lot No.||Type||Diagram||Qty||Fleet numbers||Notes|
|30530||Driving Motor Brake Second (DMBS)||598||30||51651–51680|
|30531||Trailer Open Second (TS)||590||15||59649–59663|
|30532||Trailer Composite with lavatory (TCL)||599||15||59664–59678|
|30595||Driving Motor Brake Second (DMBS)||598||12||51849–51860|
|30596||Trailer Open Second (TS)||590||6||59713–59718|
|30597||Trailer Composite with lavatory (TCL)||599||6||59719–59724|
|30598||Driving Motor Brake Second (DMBS)||598||40||51861–51900|
|30599||Trailer Open Second (TS)||590||20||59725–59744|
|50600||Trailer Composite with lavatory (TCL)||599||20||59745–59764|
- Builder: BR Derby
- Introduced: 1960
- Coupling Code: Blue Square
- Body: 63 ft 6 in (19.35 m) x 9 feet 3 inches (2.82 m)*
- Engines: BUT (Leyland Albion) of 230 hp (172 kW) (2 per DMBS)
- Transmission: Standard mechanical
- Weight: DMBS 38 long tons (39 t; 43 short tons); TCL 30 long tons (30 t; 34 short tons); TS 29 long tons (29 t; 32 short tons)
15 vehicles are preserved. DMBS 51677 was scrapped in early 2017.
|Set number||Vehicle numbers||Livery||Location||Notes|
|-||51655||-||-||BR Green||Private Site||Static Display|
|-||51669||-||-||BR Green||Spa Valley Railway||Under Restoration|
|-||51849||-||-||BR Green||Spa Valley Railway||Stored|
|-||51859||59678||51880||BR Green||West Somerset Railway||Operational|
|-||51886||59761||51899||BR Green||Buckinghamshire Railway Centre||Stored|
|-||51887||-||-||Blood and Custard||West Somerset Railway||Under Restoration|
|-||-||59659(TS)||-||BR Green||Midland Railway||Under Restoration|
|-||-||59664||-||BR Green||Midsomer Norton railway station||Under Restoration|
|-||-||59719||-||BR Green||Dartmouth Steam Railway||Operational|
|-||-||59740(TS)||-||Black||South Devon Railway||Operational|
|-||51663||-||-||West Somerset Railway||Underframe only spare parts|
|Wikimedia Commons has media related to British Rail Class 115.|
- The Railcar Association
- Motive Power Recognition: 3 DMUs. Colin J. Marsden
- British Railway Pictorial: First Generation DMUs. Kevin Robertson
- British Rail Fleet Survey 8: Diesel Multiple Units- The First Generation. Brian Haresnape
- A Pictorial Record of British Railways Diesel Multiple Units. Brian Golding