British Rail Class 141

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British Rail Class 141 "Pacer"
141108 at Colne Valley Railway.jpg
141108 at the Colne Valley Railway
In service 1984 - 1999
Manufacturer Leyland
Family name Pacer
Refurbishment 1988 - 1989
Formation 2 car
Operator British Rail
Line(s) served West YorkshireValley lines
Specifications
Maximum speed 75mph
Engine(s) Leyland TL11
Safety system(s) AWS
Gauge 1435 mm (4 ft 8½ in)
141113 standing at Swanwick shed, Midland Railway Butterley
Interior photo of 141113
141103 standing at Stanhope station, Weardale Railway
Cab of unit 141103

The British Rail Class 141 was the first production model of the Pacer diesel multiple units. They were created because then British Rail had a large shortage of trains so rather than spending lots of money on expensive proper trains, they invented the Pacer. British Leyland at the time had a surplus in the production of bus bodies so the idea was to weld the bus body from an old bus on to a freight waggon chassis. The result of this was that pacers have notoriously poor suspension and are noisier around corners due to flanging (the squeaky noise that you'll sometimes hear when travelling by train). This makes them non-ideal passenger trains so they are now being replaced (or have been replaced in the case of the class 141) by new trains.