New South Wales Z24 class locomotive

New South Wales Z24 class

300px Class Z24 Locomotive

Type and origin Power type Steam Builder Dübs and Company Build date 1889 Total produced 25

Specifications Configuration 2-6-0 UIC class 1'Cn Gauge 4 ft 8 1⁄2 in (1,435 mm) Driver diameter 4 ft 0 in (1.219 m) Adhesive weight 84,000 lb (38 t) Loco weight 104,000 lb (47 t) Boiler pressure 140 psi (1.0 MPa) Firegrate area 21 sq ft (2.0 m2) Heating surface Superheater None Cylinders Two, outside Cylinder size 18 in × 26 in (457 mm × 660 mm)

Performance figures Tractive effort 20,855 lbf (92.77 kN) Factor of adh 4.00

Career Operators New South Wales Government Railways Class B55, Z24 from 1924 Numbers 55-78, 388-393, 407-410 (2401-2425 from 1924) Retired 1929–1960 Disposition 4 preserved, 21 scrapped

The Z24 class (formerly B55 class) was a two-cylinder, non-condensing, saturated 2-6-0 ‘ Mogul‘ type steam engine built by Dübs and Company for the New South Wales Government Railways of Australia.

Order

Following the success of the B205 class, in 1889 the New South Wales Government Railways ordered an additional 25 locomotives of a basically similar design from Dübs and Company. These locomotives had a deeper firebox, steel cab and weighed an extra nine tonnes. They were pooled with the B205 class in general working. The first locomotive entered traffic on 10 March 1891 and all were in service by August that year.

Operation

They took a generally unobtrusive part in main line goods traffic until displaced by the T524/TF939/K1353 class locomotives. They then moved on to branch lines until displaced by the C30T class locomotives which arrived in the mid-1920s.

Demise & Preservation

As boiler renewals became due between 1929 and 1960, their numbers were depleted through either scrapping or disposal. Representatives found their way on to the private lines of such organisations as Bunnerong Power Station, Nepean Sand & Gravel at North Richmond and Hunter Region collieries.

The last locomotive withdrawn was 2413 in November 1960, following an enthusiast tour to Richmond. It joined 2408 and 2414 at Bunnerong Power Station until 1975.

Preserved Z24 Class Locomotives
2408	2-6-0 goods	Dübs and Company	1891	Dorrigo Steam Railway and Museum	Dorrigo	stored
2413	2-6-0 goods	Dübs and Company	1891	Canberra Railway Museum	Junee	stored
2414	2-6-0 goods	Dübs and Company	1891	Dorrigo Steam Railway and Museum	Dorrigo	stored
2419	2-6-0 goods	Dübs and Company	1891	Goulburn Locomotive Roundhouse Museum	Goulburn	static exhibit	NSW Locomotive, Steam 2419

References

File:Bunerong 7.jpg

Bunnerong Power Station No7, formerly 2408