British Rail Class 140

The British Rail Class 140 was the prototype of the Pacer family of diesel multiple units, a two-car railbus built between 1979 and 1981 for British Rail's smaller branch line services. Much of its bodywork came from Leyland National bus components, but because it was built to British Rail's strict crashworthiness and end-loading rules it lost some of the lightweight bus-on-a-wagon look first intended. Each car had a Leyland TL11 engine of 200 horsepower (150 kilowatts), a Self-Changing Gears automatic gearbox and a Gmeinder final drive driving a single axle. The sole unit, 140001, served as a trials and demonstration unit through the 1980s and showed the way for the production Class 141 and Class 142. It is preserved at the Keith and Dufftown Railway in Moray, Scotland.