Class 168

The Class 168 Clubman were the first new DMUs to be ordered after rail privatisation. They were built for the Chiltern routes providing much needed extra capacity and remain on these routes today as part of Chiltern Railways [1]. The 168s are used on fast and semi-fast services out of Marylebone and are capable of 100mph [2].

Information
Number built: 67 (19 3 or 4-car sets)
Built: 1997-2006
Builder: Adtranz Derby later Bombardier Derby
Engine: MTU 6R183TD13H diesel per car
Power: 1, 688 hp (1, 260 kW) or 1, 266 hp (945 kW)
Formation: Driving Motor Standard Lavatory (DMSL)+Motor Standard Lavatory (MSL)+
Motor Standard (MS)+DMSL or
DMSL+MS+DMSL or
DMSL+MS+MS+DMSL

The original 5 Class 168/0s are 4-car sets based on the Networker cab design (they were originally 3-car but were strengthened to 4), the subsequent and later built 168/1s and 168/2s use the Turbostar design and are very similar to the Class 170. These 2 sub-classes are a mixture of 3 and 4 car sets.

The Class 168s are fitted with trip cock equipment as they share lines with London Underground stock on the Harrow-on-the-Hill to Amersham route. This equipment applies the brakes if a LU signal is passed at danger [3].

The Chiltern fleet is being strengthened with a new sub-class 168/3 formed from transferred Class 170s from Trans Pennine Express [4].
Chiltern 168 001 at Leamington Spa

Chiltern 168 110 at Princes Risborough

Chiltern 168 004 at Hatton

[1] Colin J. Marsden, DMU and EMU Recognition (Ian Allan, 2013) p. 154
[2] Gavin Morrison, British Railway DMUs in Colour (Ian Allan, 2010) p. 45
[3] Colin J. Marsden (ed.), "Class 168 Clubman", Modern Locomotives Illustrated No. 216 December 2015-January 2016 (Second Generation DMUs Classes 165-185) p. 22
[4] "TPE goes for new loco-hauled trains for new franchise", Today's Railways UK No. 173 May 2016