7F-300-009 Great Western Toad Brake Van Diagram AA21 Bauxite W17390 Large Prairie mail and motor vehicles in

mail and motor vehicles in passenger and parcels trains until the early 1970s

precision machined flywheels

Class 37/6 bufferbeam configuration with air/control pipes only

This will allow trouble-free running without problems caused by momentary loss of track power

828 in either Caledonian Railway light blue or dark blue respectively

7F-300-009 Great Western Toad Brake Van Diagram AA21 Bauxite W17390 Large Prairie mail and motor vehicles inAfter World War One in 1918, more 20 ton vans to the improved design were built with G W R self contained buffers and given Diagram AA15. A total of 378 were built between 1918 and 1927. The next development was the AA19 which were built between 1927 and 1931 incorporating many RCH parts such as buffers and axleboxes but utilising the same body. The total constructed was 221 vans. Diagram AA 20 followed which was externally identical to the AA19 vans