Queensland 4D11½ Abt class locomotive

The Queensland Railways 4D11½ Abt class locomotive was a class of 0-4-2RT steam locomotives operated by the Queensland Railways.

History In October 1898, two Dübs & Co locomotives entered service. Per Queensland Railway's classification system they were designated the 4D11½ Abt class, the 4 representing the number of driving wheels, the D that it was a tank locomotive, and the 11½ the cylinder diameter in inches.

They were built to assist conventional locomotives up and down a steeply graded rack railway section of the Central Western line at Mount Morgan.

Class list NumberWorksnumberIn serviceCondemned3393619October 1898September 19163403620October 1898December 1922

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