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British Rail Class 168 Clubman
Chiltern Railways Class 168/0 at Birmingham Moor Street
Refurbished Class 168/0 saloon
In service
20 May 1998 – present
Manufacturer
Adtranz
Bombardier Transportation
Built at
Derby Litchurch Lane Works
Family name
Clubman / Turbostar
Constructed
1998–2004
Refurbished
2007–2008[1]
Number built
19 (plus 9 converted from Cl. 170/3)
Formation
4 cars per 168/0 unit: DMSL(W)-MSL-MS-DMSL
3 or 4 cars per 168/1 unit: DMSL(W)-MS-DMSL DMSL(W)-MSL-MS-DMSL
3 or 4 cars per 168/2 unit: DMSL(W)-MS-DMSL(W) DMSL(W)-MS-MS-DMSL(W)
2 cars per 168/3 unit: DMSL(W)-DMSL[2]
Fleet numbers
168/0: 168001–168005
168/1: 168106–168113
168/2: 168214–168219
168/3: 168321–168329
Capacity
3-car: 204 seats
4-car: 272 seats
Owners
Eversholt Rail Group[3]
Porterbrook[4]
Operators
Chiltern Railways
Lines served
Chiltern Main Line
London Marylebone – Aylesbury
London Marylebone – Oxford
Princes Risborough – Aylesbury
Specifications
Car body construction
Welded aluminium, with steel body ends[5]
Car length
168/0 DM vehicles: 24.10 m (79 ft 1 in)
Other DM vehicles: 23.62 m (77 ft 6 in)
Intermediate vehicles: 23.61 m (77 ft 6 in)
Width
2.69 m (8 ft 10 in)
Height
3.77 m (12 ft 4 in)
Doors
Double-leaf sliding plug (2 per side per car)
Maximum speed
100 mph (160 km/h)
Prime mover(s)
All units except 168329: 2–4 × MTU 6R 183 TD 13H[6]
Unit 168329: 2 × MTU 6H 1800 R76[7][8]
(all one per car)
Engine type
6R 183: I6 4-stroke turbo-diesel
6H 1800: same, plus SCR[8]
Displacement
6R 183: 13 L (790 cu in)[citation needed]
6H 1800: 12.81 L (782 cu in)[8]
(all per engine)
Power output
315 kW (422 hp) per engine[9][8]
Transmission
All units except 168329: Voith T 211 rzze (hydrokinetic)[10]
Unit 168329: ZF EcoWorld 6 AP 2500R[11][12]
(all one per car)
Acceleration
0.5 m/s2 (1.1 mph/s)[3]
Bogies
Adtranz/Bombardier
Powered: P3-23
Unpowered: T3-23
Braking system(s)
Electro-pneumatic (disc)
Safety system(s)
AWS
BR ATP (except 168/3s)
TPWS
Tripcock
Coupling system
BSI[13]
Multiple working
Within class, and with Class 165[14]
Track gauge
1,435 mm (4 ft 8+1⁄2 in) standard gauge
Notes/references
Sourced from [9] except where otherwise noted
The Class 168 Clubman is a British diesel multiple unit (DMU) passenger train used on Chiltern Line services between London Marylebone and the West Midlands. The trains were built by Adtranz at the Derby Litchurch Lane Works in several batches from 1998.
The first batch was classified 168/0 under TOPS and resembled the Class 165 units previously built by BREL York. The Networker-design cab was an interim solution pending the design of a completely new cab for further Turbostar batches. Subsequent builds, subclassed as 168/1 and 168/2, were constructed at the same time as the Class 170 Turbostar and thus are part of the Turbostar family of trains.
The first batch of Clubman 168/0 carriages ordered by Chiltern Railways were the first units ordered by any train operating company since the privatisation of the UK industry in 1996. They were delivered as 3-car sets but later lengthened to 4-car sets.
One unit has been converted to hybrid operation as of 2022, but is to be converted back to normal specifications following failed operations.[15]
^"Chiltern Railways: About us - Our train fleet". Chiltern Railways. Archived from the original on 3 July 2010. Retrieved 23 August 2010.
^Class 170 & 171 Diesel Multiple Unit(PDF) (1A ed.). Derby: Porterbrook Leasing Company. September 2013. Archived from the original (PDF) on 23 November 2015. Retrieved 13 December 2022.
^ ab"Class 168". London: Eversholt Rail Group. Archived from the original on 6 August 2021. Retrieved 5 August 2021.
^Sherratt, Philip, ed. (2023). "ROSCO Fleets". Modern Railways: Review 2023. Stamford: Key Publishing. pp. 18–19. ISBN 978-1-80282-569-5.
^"Turbostar – United Kingdom". Bombardier Transportation. Archived from the original on 13 June 2011. Retrieved 13 December 2022.
^MTU Rail Power for the UK & Ireland(PDF). MTU Friedrichshafen GmbH. September 2018. p. 2. Archived from the original (PDF) on 3 December 2022. Retrieved 3 December 2022.
^"HybridFLEX Battery-Diesel Train, UK". Railway Technology. London: Verdict Media. Archived from the original on 23 September 2021. Retrieved 14 December 2022.
^ abcdMTU Hybrid Powerpack Series 1800 for Railcar Applications(PDF) (01/22 ed.). Friedrichshafen: Rolls-Royce Power Systems AG. 26 August 2022. Archived (PDF) from the original on 14 December 2022. Retrieved 14 December 2022.
^ abClass 168 Diesel Multiple Unit(PDF) (1A ed.). Derby: Porterbrook Leasing Company. September 2013. Archived from the original (PDF) on 1 July 2015. Retrieved 13 December 2022.
^"Turbo Star" Class 168: Chiltern Railways Diesel Railcars with Voith T 211 rzze Turbo Transmission (07/2000 ed.). Heidenheim: Voith Turbo GmbH & Co. KG. G 1520 e.
^"Cutting Emissions – cleaner, greener Turbostars". Rail Engineer. Coalville: Rail Media Group. 26 April 2022. Archived from the original on 23 May 2022. Retrieved 14 December 2022.
^"Hybrid Powerpacks for Railcars". Rail Solution Guide(PDF) (01/22 ed.). Friedrichshafen: Rolls-Royce Power Systems AG. 26 August 2022. p. 13. Archived (PDF) from the original on 14 December 2022. Retrieved 14 December 2022.
^System Data for Mechanical and Electrical Coupling of Rail Vehicles in support of GM/RT2190(PDF). London: Rail Safety and Standards Board. 22 June 2011. p. 4. SD001. Archived from the original (PDF) on 1 April 2012. Retrieved 22 November 2022.
^Webster, Neil; Hall, Peter; Fox, Peter (2001). British Railways Locomotives & Coaching Stock 2001. Sheffield: Platform 5 Publishing. pp. 207–208. ISBN 1-902336-19-4.
^"…But HybridFLEX Class 168 set to be de-converted". Railways Illustrated. No. 248. October 2023. p. 13.
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