*** Welcome to piglix ***

Class 158

British Rail Class 158 Express Sprinter
Arriva Trains Wales Class 158, 158818, Ruabon railway station (geograph 4024571).jpg
Arriva Trains Wales refurbished Class 158 No. 158818 at Ruabon
158832 Interior.jpg
The interior of refurbished Arriva Trains Wales Class 158
In service 17 September 1990
Manufacturer BREL
Built at Derby Works
Family name Sprinter
Constructed 1989—1992
Number built 182 trainsets (30 converted to 159s)
Number in service 170 trainsets
Formation 2 or 3 cars per trainset
Capacity Northern:
138, 142 (158/0 & 158/9) or 207 (158/0) seats per unit
Operator(s) Arriva Trains Wales
East Midlands Trains
Great Western Railway
Abellio ScotRail
Northern
South West Trains
State Railway of Thailand
Specifications
Car body construction Welded aluminium
Car length 23.21 m (76 ft 2 in)
Width 2.7 m (8 ft 10 in)
Articulated sections Flexible diaphragm within and between units
Maximum speed 90 mph (140 km/h)
Weight 37.8 t (41.7 short tons; 37.2 long tons) or
38.5 t (42.4 short tons; 37.9 long tons) per car
Traction system DMU
Prime mover(s) Diesel, one per car
Cummins NTA855R1
(158701 - 158814 and 158901 - 158910)
Perkins 2006-TWH (158815 - 158862)
Cummins NTA855R3
(158863 - 158872)
numbers as built
Power output Cummins: 350 hp (260 kW)
Perkins 350 hp (260 kW)
Cummins: 400 hp (300 kW)
Transmission Voith T211rz or T211rzz hydraulic
Gmeinder GM 190 final drive
2 axles driven per car
Braking system(s) Pneumatic, Disc
Safety system(s)

AWS, TPWS, ERTMS

BSI
Multiple working Class 150, Class 153, Class 156, Class 159, Class 170
Track gauge 1,435 mm (4 ft 8 12 in) (1000 mm metre gauge in Thailand)

AWS, TPWS, ERTMS

The British Rail Class 158 Express Sprinter is a diesel multiple-unit (or DMU), built specifically for British Rail between 1989 and 1992 by BREL at its Derby Works. They were built to replace many locomotive-hauled passenger trains, and allowed cascading of existing Sprinter units to replace elderly 'heritage' DMUs. The Class 159 DMUs are almost identical to the Class 158s, having been converted from Class 158 to Class 159 in two batches.

A total of 182 units were built. The majority were built as two-car sets. 17 units were built as three-car units; eight of these units have since had the centre car removed, whilst another eight have been upgraded to be Class 159s. The final ten units were built specifically for West Yorkshire PTE Metro services around Leeds.

There were three varieties of unit when built. The standard batch, two- and three-car units (158701—158814 and 158901—158910) had 350 hp (260 kW) Cummins engines. The next batch (158815—158862) were built as non-standard to enable 350 hp (260 kW) Perkins engines to be fitted. The final batch (158863—158872) were given higher-powered Cummins engines of 400 hp (300 kW), as it was originally intended that these units would work the steeply graded Welsh Marches Line. Another 22 of these higher-powered units were built, and became three-car Class 159s. Over time, the units have become mixed up as franchises changed, and higher- and lower-powered units can be seen working on the same routes. All units use P4-4A and T4-4A bogies.


...
Wikipedia

...