New South Wales C36 class locomotive

New South Wales C36 class
C36 Class Locomotive with original round top boiler
Type and origin Power type Steam Builder Eveleigh Railway Workshops (10) Clyde Engineering (65) Build date 1925
Specifications Configuration: ​  • Whyte 4-6-0  • UIC 2′C h2 Gauge 4 ft 8+1⁄2 in (1,435 mm) standard gauge Driver dia. 69 in (1,753 mm) Length 67 ft 11.5 in (20.714 m) Axle load original: 20.8 long tons (21.1 t; 23.3 short tons) later: 21 long tons (21.3 t; 23.5 short tons) Total weight original: 159.4 long tons (162.0 t; 178.5 short tons) later: 160 long tons (162.6 t; 179.2 short tons) Fuel type Coal Fuel capacity 14 long tons (14.2 t; 15.7 short tons) Water cap. 6,250 imp gal (7,510 US gal; 28,400 L) Boiler pressure original: 180 psi (1.24 MPa) later: 200 psi (1.38 MPa) Cylinders Two, outside Cylinder size 23 by 26 inches (584.2 mm × 660.4 mm) Valve gear Walschaerts
Performance figures Maximum speed 93 miles per hour (150 km/h) (not verified) Tractive effort original: 30,500 lbf (135.67 kN) later: 33,890 lbf (150.75 kN)
Career Operators New South Wales Government Railways Class 36 class Number in class 75 Numbers 3601–3675 First run 1925 Preserved 3609, 3616, 3642

The New South Wales C36 class was a class of two-cylinder, simple, non-condensing, coal-fired superheated, 4-6-0 express passenger steam locomotives built by Eveleigh Railway Workshops and Clyde Engineering for the New South Wales Government Railways in Australia.

Introduced in 1925, the 75 locomotives of the class became the principal motive power for all major expresses, and accelerated long-distance passenger timetables leading to new levels of service in the pre World War II period. They were the mainstay of passenger expresses for over 20 years before the advent of the 38 class. The class was used extensively for performance testing, and thus the development and trial of a number of technical improvements.