British Rail Class 144 Pacer | |
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Northern Rail Class 144 at Lancaster in 2012 | |
![]() Northern Rail refurbished Class 144 saloon | |
In service | 1986–2020 |
Manufacturer | |
Order no. |
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Family name | Pacer |
Constructed | 1986–1987[1] |
Refurbished |
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Number built | 23 (13 × 2-car, 10 × 3-car) |
Number preserved | 19 |
Number scrapped | 3 |
Formation | 2 or 3 cars per unit:
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Diagram |
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Fleet numbers |
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Capacity |
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Owners | Porterbrook |
Operators | |
Depots | Neville Hill (Leeds)[1] |
Lines served | |
Specifications | |
Car body construction | Steel underframe, aluminium alloy body and roof |
Car length |
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Width | 2.695 m (8 ft 10.1 in) |
Height | 3.725 m (12 ft 2.7 in) |
Floor height | 1.288 m (4 ft 2.7 in) |
Doors | Double-leaf folding (3 or 5 per side) |
Wheelbase | 9.000 m (29 ft 6.3 in) |
Maximum speed | 75 mph (121 km/h) |
Weight |
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Axle load | Route Availability 1[2] |
Prime mover(s) | |
Engine type | Inline-6 4-stroke turbo-diesel[4][5] |
Displacement | |
Power output | |
Transmission | |
Minimum turning radius | 70 m (230 ft) |
Braking system(s) | Electro-pneumatic (tread)[2] |
Safety system(s) | |
Coupling system | BSI |
Multiple working | Within class, and with Classes 14x, 15x, and 170[2] |
Track gauge | 1,435 mm (4 ft 8+1⁄2 in) standard gauge |
Notes/references | |
Specifications as at December 1987[7] except where otherwise noted. |
The British Rail Class 144 Pacer is a diesel multiple unit (DMU) passenger train built at Derby between 1986 and 1987. British Rail, seeking to procure improved derivatives of the earlier Class 141, placed an order with the manufacturers British Rail Engineering Limited (BREL) and Walter Alexander to construct their own variant, the Class 144. A total of 23 units were constructed.[8] All units have now retired from mainline service, though the majority of the units have been acquired for preservation on heritage railways and in other uses. As of December 2022, 19 out of the 23 units have been purchased following withdrawal for this purpose, of which 14 units are in operational condition.
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