New South Wales Z21 class locomotive

The Z21 class (formerly L.304 class) was a class of steam locomotives built for the New South Wales Government Railways in Australia.[2][3][4]

New South Wales Z21 Class
L.304 Class Locomotive
Type and origin Power type Steam Builder Baldwin Locomotive Works Total produced 10[1]
Specifications Configuration: ​  • Whyte 2-6-0[1] Gauge 4 ft 8 ^1⁄2 in (1,435 mm) standard gauge[1] Driver dia. 5 ft 1 in (1,549 mm)[1] Boiler pressure 140 psi (965 kPa)[1] Cylinder size 18 in × 26 in (457 mm × 660 mm)[1]
Performance figures Tractive effort 15,467 lbf (68.80 kN)[1]
Career First run March 1885[1] Preserved None[1] Scrapped All by 1941[1] Disposition Scrapped

Wheel arrangement

The wheel arrangement for the Z21 class was 2-6-0. Under the Whyte notation for the classification of steam locomotives, 2-6-0 represents the wheel arrangement of two leading wheels on one axle, usually in a leading truck, six powered and coupled driving wheels on three axles and no trailing wheels. This arrangement is commonly called a Mogul.[5]

History

The last engine was scrapped in 1941.[1]

2-6-0 Wheel arrangement. Front of locomotive to the left.

See also

• NSWGR steam locomotive classification

References

1. Oberg, Leon (1975). Locomotives of Australia. p. 54. 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. "American Steam Locomotive Wheel Arrangements". www.steamlocomotive.com. Retrieved 25 October 2016.