Diesel Multiple Units
From GWR streamline railcars to HST and Voyager Trains
Several railway companies experimented with diesel traction between the wars, testing shunting engines,4-wheel 'railbus' units and bogie rail cars. Onlythe Great Western withAEC developed 'prototypes' into viable production trains. Following thesmooth-curved coach-built express railcars Swindon produced a moreangular streamlined styling, better suited to mass production and built 20 cars to this design, including one parcels car and notably 4 single-ended cars arranged towork in pairs. These last four being the forerunners in mechnical design of the British Rail dieselmultiple units of the 1950/60s.