In May 1939, an order for five 38 class locomotives was placed with
Clyde Engineering. They suffered many delays during construction, mostly due to resource shortages caused by
World War II and the
Great Depression. The first five locomotives, built by
Clyde Engineering, had a
semi-streamlined boiler casing similar to the
J class of New Zealand. However with this design, the firemen could not maintain steam in the 245
psi boiler – the highest boiler pressure of any engine in Australia. In early trials on the Southern line, 3801, the class leader, was allocated two firemen. The fault was located when it was found that the shape of the
blast pipe prevented steam from the
cylinders from passing optimally into the
petticoat pipe below the chimney, through which it was ejected to the atmosphere. In turn, this reduced the suction of hot gases through the
boiler tubes, making it more demanding to fire. Soon the blast pipe was adjusted, and the C38 class became noted for the clean "bark" of its exhaust. The locomotives built by Clyde Engineering were delivered in wartime grey. After the war, all were repainted green, as the 25 unstreamlined locomotives had been from new. In the 1950s, all except 3813 were painted black. 3801 and 3830 had their green livery restored due to pressure from heritage groups in the 1960s. Among the services they initially hauled were the
Central West Express,
Newcastle Flyer,
Melbourne Limited Express,
Riverina Express and
South Coast Daylight Express as well as the overnight mail trains. Because of their
axle load, they were confined to operating between Sydney and the following extremities of operation:
Port Kembla (Coniston),
Albury,
Dubbo and
Maitland, although they worked the North Coast passenger trains to Brisbane until track problems surfaced. The 38 class briefly returned to the former
Melbourne Limited Express route in April 1962, when
3830 and 3813 hauled the inaugural standard gauge
Spirit of Progress from
Albury to
Sydney. The first 38 class locomotive was withdrawn in 1961 with the last withdrawn in December 1970. Locomotive 3801 featured in an evocative 1974 short film,
A Steam Train Passes, which won many awards and is generally regarded as Australia's finest railway film. File:C38 class locomotive.jpg|3803 File:The Riverina Express, 1946 (4175557960).jpg|3807 on The Riverina Express in 1946 File:NSWGR C38 Class Locomotive 3808.jpg|3808 File:Flyer at Fassifern.jpg|3809 ==Roster==