New South Wales Z21 class locomotive

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] Disposition All scrapped by 1941 [1]

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]}

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.^{[ citation needed ]} This arrangement is commonly called a Mogul. ^{[5] [ citation needed ]}

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.