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British Rail Class 144
| British Rail Class 144 Pacer | |
|---|---|
 Northern Rail Class 144 at Lancaster in 2012 | |
 Northern Rail refurbished Class 144 saloon | |
| In service | 1986–2020 |
| Manufacturer | |
| Order no. |
|
| Family name | Pacer |
| Constructed | 1986–1987[1] |
| Refurbished |
|
| Number built | 23 (13 × 2-car, 10 × 3-car) |
| Number preserved | 19 |
| Number scrapped | 3 |
| Formation | 2 or 3 cars per unit:
|
| Diagram |
|
| Fleet numbers |
|
| Capacity |
|
| Owners | Porterbrook |
| Operators | |
| Depots | Neville Hill (Leeds)[1] |
| Lines served | |
| Specifications | |
| Car body construction | Steel underframe, aluminium alloy body and roof |
| Car length |
|
| 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 |
|
| 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 are diesel multiple unit (DMU) passenger trains 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.
- ^ a b c d Fox, Peter (1987). British Railways Pocket Book No. 2: Multiple Units (Summer–Autumn 1987 ed.). Sheffield: Platform 5 Publishing. p. 42. ISBN 0906579740. OCLC 613347580.
- ^ a b c d e Class 143 & 144 Diesel Multiple Units (PDF) (1A ed.). Derby: Porterbrook Leasing Company. September 2012. Archived from the original (PDF) on 5 January 2016. Retrieved 29 December 2022.
- ^ a b Pritchard, R. N.; Fox, Peter (2009). British Railways Pocket Book No. 3: Diesel Multiple Units 2010. Sheffield: Platform 5 Publishing. p. 15. ISBN 978-1-902336-75-6. OCLC 614300319.
- ^ a b Leyland Titan Technical Data (PDF). Southall: British Leyland UK. June 1978. Lit. No. 1683. Archived (PDF) from the original on 31 January 2022. Retrieved 21 December 2022.
- ^ a b Engine Performance Curve LTA10-G2. Columbus, Indiana: Cummins Engine Company. 14 April 1997. FR-2254. Archived from the original (PDF) on 22 December 2022. Retrieved 22 December 2022.
- ^ a b Cite error: The named reference
shorewas invoked but never defined (see the help page). - ^ Vehicle Diagram Book No. 220 for Diesel Multiple Unit Trains (Railcars) (PDF). Derby: British Railways Board. 1982. DP240–DP241 & DR205 (in work pp. 75–78 & 205–206). Archived from the original (PDF) on 21 January 2015. Retrieved 19 February 2016 – via Barrowmore MRG.
- ^ Cite error: The named reference
junctflwas invoked but never defined (see the help page).
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