Scammell’s first Motive Units, or MUs (Scammell’s terminology for the tractor unit) in the early 1920s were chain driven and had solid tyres. A tractor and trailer combination was known as an Articulated Eight, or Articulated Six depending upon the number of wheels. The early cabs offered only some protection for the driver as the side doors had no windows. By the late Twenties, pneumatic tyres were fitted, although initially only to the front wheels, and the cabs became more substantial. From the Thirties, pneumatic tyres were fitted all round.
After WW2, the cabs, wheels and
