 | This article relies largely or entirely on a single source .(July 2024) |
| Queensland Railways 8D15 class | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Class 8D15 No. 77, in service from January 1885 | |||||||||||||||||||
| |||||||||||||||||||
| |||||||||||||||||||
| |||||||||||||||||||
The Queensland Railways 8D15 class locomotive was a class of 2-8-2T steam locomotives operated by the Queensland Railways.
In 1884 Dübs & Co delivered five 2-8-2T locomotives to the Queensland Railways. Three were delivered to the Southern & Western Railway and one each to the Central (Rockhampton) and Great Northern (Townsville) Railways. The latter was transferred to the Central Railway without use. Per Queensland Railway's classification system they were designated the 8D15 class, the 8 representing the number of driving wheels, the D that it was a tank locomotive, and the 15 the cylinder diameter in inches. [1]
Two were converted to tender engines in 1890/91. All were later reboilered. The tank engines were written off in October 1922, while the tender locomotives, having spent their final years hauling limestone and water trains to Mount Morgan gold mine, followed in 1938. [1]
| Works number | Southern & Western Railway number | Central Railway number | Queensland Railways number | In service | Notes |
|---|---|---|---|---|---|
| 2010 | 75 | 75 | February 1885 | ||
| 2011 | 76 | 76 | January 1885 | ||
| 2012 | 77 | 77 | January 1885 | ||
| 2013 | 23 & 2 | 134 | December 1884 | entered service as no. 23, withdrawn for modifications, re-entered service as no. 2, converted to tender engine 1891 | |
| 2014 | 3 | 135 | November 1884 | delivered to Great Northern Railway as no. 13, transferred without use to Central Railway, converted to tender engine 1890 | |
Under the Whyte notation for the classification of steam locomotives, 2-8-2 represents the wheel arrangement of two leading wheels on one axle, usually in a leading truck, eight powered and coupled driving wheels on four axles and two trailing wheels on one axle, usually in a trailing truck. This configuration of steam locomotive is most often referred to as a Mikado, frequently shortened to Mike.
Under the Whyte notation for the classification of steam locomotives, 2-6-2 represents the wheel arrangement of two leading wheels, six coupled driving wheels and two trailing wheels. This arrangement is commonly called a Prairie.
Under the Whyte notation for the classification of steam locomotives, 0-4-2 represents the wheel arrangement with no leading wheels, four powered and coupled driving wheels on two axles and two trailing wheels on one axle. While the first locomotives of this wheel arrangement were tender engines, the configuration was later often used for tank engines, which is noted by adding letter suffixes to the configuration, such as 0-4-2T for a conventional side-tank locomotive, 0-4-2ST for a saddle-tank locomotive, 0-4-2WT for a well-tank locomotive and 0-4-2RT for a rack-equipped tank locomotive.
Under the Whyte notation for the classification of steam locomotives, 0-6-2 represents the wheel arrangement of no leading wheels, six powered and coupled driving wheels on three axles and two trailing wheels on one axle.
A condensing steam locomotive is a type of locomotive designed to recover exhaust steam, either in order to improve range between taking on boiler water, or to reduce emission of steam inside enclosed spaces. The apparatus takes the exhaust steam that would normally be used to produce a draft for the firebox, and routes it through a heat exchanger, into the boiler water tanks. Installations vary depending on the purpose, design and the type of locomotive to which it is fitted. It differs from the usual closed cycle condensing steam engine, in that the function of the condenser is primarily either to recover water, or to avoid excessive emissions to the atmosphere, rather than maintaining a vacuum to improve both efficiency and power.
Under the Whyte notation for the classification of steam locomotives, 0-8-4 represents the wheel arrangement of no leading wheels, eight powered and coupled driving wheels on four axles, and four trailing wheels on two axles.
The Barry Railway Class H was a small class of seven 0-8-2T tank locomotives built for the Barry Railway by Sharp Stewart in 1896. When they were introduced they were the first locomotives in Britain to use the 0-8-2 wheel arrangement.
The South African Railways Class 17 4-8-0TT of 1926 was a steam locomotive from the pre-Union era in the Natal Colony.
The South African Railways Class A 4-8-2T of 1888 is a steam locomotive class from the pre-Union era in the Colony of Natal.
The South African Railways Class 13 4-8-0TT of 1905 was a steam locomotive from the pre-Union era in Transvaal.
The South African Railways Class H 4-10-2T, introduced in 1899, was a steam locomotive from the pre-Union era in the Colony of Natal.
The South African Railways Class H2 4-8-2T of 1909 was a steam locomotive from the pre-Union era in the Colony of Natal.
The South African Railways Class G 4-8-2T of 1904 was a steam locomotive from the pre-Union era in the Colony of Natal.
The South African Railways Class NG4 4-6-2T of 1911 was a narrow-gauge steam locomotive from the pre-Union era in the Colony of Natal.
The Central South African Railways Class E 4-10-2T of 1901 was a South African steam locomotive from the pre-Union era in Transvaal.
The Natal Government Railways 4-6-2TT Havelock of 1888 was a South African steam locomotive from the pre-Union era in the Natal Colony.
The Cape Government Railways 2nd Class 2-6-2TT of 1875 was a South African steam locomotive from the pre-Union era in the Cape of Good Hope.
The South West African Class Ha 0-6-2T of 1904 was a steam locomotive from the German South West Africa era.
The South West African Class Hb 0-6-2T of 1905 was a narrow gauge steam locomotive from the German South West Africa era.
The Queensland Railways 6D16 class locomotive was a class of 4-6-2T steam locomotives operated by the Queensland Railways.