The Vickers VR180 Vigor was a British crawler tractor, built from 1951 to 1958 by Vickers-Armstrongs.
After the war they developed a civilian crawler tractor that could be sold for use in peacetime reconstruction work.
However the fuel consumption was high, at 9.8 gallons per hour at full rate. Unusually this engine was of dry sump design allowing constant full pressure lubrication at all operating angles.
