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British Rail Class 950
Class 950 at Upton in January 2014
Manufacturer
British Rail Engineering Limited
Built at
Holgate Road Works, York
Family name
Sprinter
Constructed
1987
Number built
1
Number in service
1
Formation
2 cars: DM-DM
Fleet numbers
Unit: 950001
Vehicles: 999600 and 999601[1]
Operators
Network Rail
Depots
Railway Technical Centre (Derby)[1]
Specifications
Car body construction
Steel[2]
Car length
19.930 m (65 ft 4.6 in)[2]
Width
2.816 m (9 ft 2.9 in)[2]
Height
3.774 m (12 ft 4.6 in)
Maximum speed
75 mph (121 km/h)
Prime mover(s)
2 × Cummins NT855-R5 (one per vehicle)[2]
Engine type
Inline-6 4-stroke turbo-diesel[3]
Displacement
14 L (855 cu in) per engine[3]
Power output
213 kW (286 hp) per engine
Transmission
Voith T 211 r (hydrokinetic)
UIC classification
2′B′+B′2′
Braking system(s)
Electro-pneumatic (tread)
Track gauge
1,435 mm (4 ft 8+1⁄2 in) standard gauge
The British Rail Class 950 is a diesel multiple unit that was purpose-built by British Rail Engineering Limited's Holgate Road carriage works for the British Rail Research Division for use as a track assessment unit. It is currently operated by Network Rail.
^ abFox, Peter; Hughes, Barry (1994). DMUs & Channel Tunnel Stock. British Railways Pocket Book No.3 (7th ed.). Platform 5. p. 50-51. ISBN 978-1-8725-2459-7. OL 12078214M. Wikidata Q112224435.
^ abcdVehicle Diagram Book No. 220 for Diesel Multiple Unit Trains (Railcars)(PDF). Derby: British Railways Board. 1982. DP238 & DP239. Archived from the original (PDF) on 21 January 2015. Retrieved 18 February 2016 – via Barrowmore MRG.
^ abMarine Engine General Data Sheet N/NT/NTA 855-M(PDF). Columbus, Indiana: Cummins Engine Company. 18 February 2002. p. 1. DS-4962. Archived (PDF) from the original on 7 December 2022. Retrieved 7 December 2022.
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