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Sydney’s first electric train (1926), a few still in service in the 1960s. It appears it is a Bradfield, and yes it is wooden! At speed they used to rock in different directions from one end of the carriage to the other. See Rail rollingstock in New South Wales. “The last ‘Bradfield’ power-cars were withdrawn from service in 1975.” By that time the few left had been given steel walls.