Queensland C17 class locomotive

The Queensland Railways C17 class was a class of 4-8-0 steam locomotives, introduced as an improved version of the C16 class and named for its four driving axles and its 17 inch cylinders. The design was so successful that 227 locomotives were built from 1920, and the Commonwealth Railways NM class used the same design. They hauled mail trains on lines that could not take the heavier B18 and a quarter class, as well as suburban, mixed, goods and branch line trains, and later worked the Inlander, Midlander and Westlander air-conditioned trains. The last forty, with Timken roller bearings and brown paint, were nicknamed Brown Bombers. In 1947 locomotive 824 derailed near Camp Mountain, killing sixteen people. Twenty-five have been preserved. Armstrong Whitworth built twenty-five engines of the class.