New South Wales Z23 class locomotive

The Z23 class (formerly O.446 class) was a class of steam locomotives built in 1891 for the New South Wales Government Railways in Australia.[2][3][4]

New South Wales Z23 Class
O.446 Class Locomotive
Type and origin Power type Steam Builder Baldwin Locomotive Works[1] Total produced 12[1]
Specifications Configuration: ​  • Whyte 4-6-0[1] Gauge 4 ft 8 ^1⁄2 in (1,435 mm)[1] Driver dia. 5 ft 1 in[1] Total weight 90.37 tons[1] Firebox:  • Firegrate area 27.7 sq.ft[1] Boiler pressure 160 lb [1] Cylinder size 21 x 24[1]
Performance figures Tractive effort 22,209 lb[1]
Career Withdrawn 1933-1946 Disposition All scrapped

Royal Commission

Although this may have been the result of a contemporary anti-American bias, these locomotives were said to be too heavy and too wide at the cylinders, and were the subject of a Royal Commission.[5]

Withdrawal

2305 was the first withdrawn in May 1933. By 1941 only six were left, with the last, 2304, being withdrawn in September 1946.[1] None has survived onto preservation.

See also

• NSWGR steam locomotive classification

References

1. Oberg, Leon (1975). Locomotives of Australia. p. 73. ISBN 0 589 07173 4.
2. Preston, Ron G (1984). Tender into Tank. Sydney: New South Wales Rail Transport Museum. pp. 11–57. ISBN 0 909862 18 4.
3. Grunbach, Alex (1989). A Compendium of New South Wales Steam Locomotives. Sydney: Australian Railway Historical Society, NSW Division. pp. 41–45. ISBN 0 909650 27 6.
4. New South Wales Railways 1855-1955. Published by Department of Railways
5. "BALDWIN ENGINE COMMISSION". The Sydney Morning Herald. National Library of Australia. 26 May 1892. p. 6. Retrieved 27 October 2014.