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British Rail Class 115: Wikis

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British Rail Class 115
Norton Fitzwarren 51859 August 2009.jpg
A set preserved on the West Somerset Railway
In service 1960-1998
Manufacturer BR Derby
Number built 41
Formation 4 cars per unit: DMBS - TCL - TS - DMBS
Capacity 332 (4 cars)
Operator British Rail
Line(s) served Chiltern Main Line, London to Aylesbury Line
Specifications
Maximum speed 70 mph (110 km/h)
Weight 135 tons per trainset
Engine(s) 2x (230hp BUT (Leyland Albion)) per DMBS
Safety system(s) AWS
Gauge 4 ft 8+12 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.

Some sets were also built for the CLC line between Liverpool and Manchester. These were later transferred to Marylebone. They also worked from Tyseley in the later years.

The Marylebone sets, which were later transferred to Bletchley but remained on Chiltern Line duties, were declared surplus after the introduction of Class 165s, from 1991 onwards. While at Bletchley depot the class was also used 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.

The final Class 115 working out of Marylebone was in July 1992. The Tyseley sets survived a bit longer, until February 1994.

Technical details

  • Builder: BR Derby
  • Introduced: 1960
  • Coupling Code: Blue Square
  • Body: 63ft 6in x 9ft 3in
  • Engines: BUT (Leyland Albion) of 230hp
  • Transmission: Standard mechanical
  • Weight: DMBS 38 tons; TCl 30 tons; TS 29 tons

Preservation

16 vehicles are preserved.

References

  • 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

Simple English

British Rail Class 115
In service 1960-1998
Manufacturer BR Derby
Number built 41
Formation 4 cars per trainset
Operator British Rail
Line(s) served Chiltern Main Line, London to Aylesbury Line
Specifications
Maximum speed 70 mph
Weight 38 tonnes
Engine(s) BUT (Leyland Albion) of 230hp
Gauge 1435 mm (4 ft 8½ in)

These 41 high density sets 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, the 115 were 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.

Some sets were also built for the CLC line between Liverpool and Manchester. These were later transferred to Marylebone. They also worked from Tyseley in the later years.

The Marylebone sets, which were later transferred to Bletchley but remained on Chiltern Line duties, were declared surplus after the introduction of Class 165s, from 1991 onwards. While at Bletchley depot the class was also used 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.

The final Class 115 working out of Marylebone was in July 1992. The Tyseley sets survived a bit longer, until February 1994.


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