British Rail Class 168

British Rail Class 168
*Clubman*
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
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;
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; Porterbrook;
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
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; Unit 168329:; 2 × MTU 6H 1800 R76; (all one per car);
Engine type	6R 183: I6 4-stroke turbo-diesel; 6H 1800: same, plus SCR;
Displacement	6R 183: 13 L (790 cu in); 6H 1800: 12.81 L (782 cu in); (all per engine);
Power output	315 kW (422 hp) per engine
Transmission	All units except 168329:; Voith T 211 rzze (hydrokinetic); Unit 168329:; ZF EcoWorld 6 AP 2500R; (all one per car);
Acceleration	0.5 m/s2 (1.6 ft/s2)
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
Multiple working	Within class, and with Class 165
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Notes/references
	Sourced from 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.

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