Queensland 4D9 class locomotive

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Queensland Railways 4D9 class
Type and origin
Power typeSteam
Builder Dübs & Co
Serial number1414, 1415
Build date1881
Total produced2
Specifications
Configuration:
​
 •  Whyte 2-4-2T
Gauge 1,067 mm (3 ft 6 in)
Fuel typeCoal
Cylinders 2 outside
Cylinder size 9 in × 15 in (229 mm × 381 mm)
Career
Operators Queensland Railways
Numbers1, 131
Preserved131
Disposition1 preserved, 1 scrapped

The Queensland Railways 4D9 class locomotive was a class of 2-4-2T steam locomotives operated by the Queensland Railways.

Steam locomotive Railway locomotive that produces its pulling power through a steam engine

A steam locomotive is a type of railway locomotive that produces its pulling power through a steam engine. These locomotives are fueled by burning combustible material – usually coal, wood, or oil – to produce steam in a boiler. The steam moves reciprocating pistons which are mechanically connected to the locomotive's main wheels (drivers). Both fuel and water supplies are carried with the locomotive, either on the locomotive itself or in wagons (tenders) pulled behind.

Queensland Rail railway operator in Queensland, Australia

Queensland Rail, also known as QR, is a railway operator in Queensland, Australia. Owned by the Queensland Government, it operates suburban and long-distance passenger services, as well as owning and maintaining approximately 6,600 kilometres of track.

Contents

History

In February 1881, two Dübs & Co two 2-4-2T locomotives entered service on the Bundaberg Railway. Per Queensland Railway's classification system they were designated the 4D9 class, the 4 representing the number of driving wheels, the D that it was a tank locomotive, and the 9 the cylinder diameter in inches. [1]

Dübs and Company defunct British locomotive manufacturer

Dübs & Co. was a locomotive manufacturer in Glasgow, Scotland, founded by Henry Dübs in 1863 and based at the Queens Park Works in Polmadie. In 1903 it amalgamated with two other Glasgow locomotive manufacturers to create the North British Locomotive Company.

Bundaberg railway station

Bundaberg railway station is located on the North Coast line in Queensland, Australia. It serves the city of Bundaberg.

Driving wheel powered wheel of a railway locomotive

On a steam locomotive, a driving wheel is a powered wheel which is driven by the locomotive's pistons. On a conventional, non-articulated locomotive, the driving wheels are all coupled together with side rods ; normally one pair is directly driven by the main rod which is connected to the end of the piston rod; power is transmitted to the others through the side rods.

Class list

Works
number		Bundaberg Railway
number		Southern & Western
Railway number		 Queensland Railways
number		In serviceNotes
1414111February 1881Sold July 1895 to Bingarra Sugar Mill
14152131February 1881Sold August 1894 to CSR, Childers, resold to Public Works Department, Tasmania for Macquarie Harbour breakwater construction, sold May 1941 to sawmiller R Howard, Zeehan, preserved by Don River Railway [2]

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References

  1. ↑ Armstrong, John (1985). Locomotives in the Tropics Volume 1. Brisbane: Australian Railway Historical Society. pp. 36, 97. ISBN   0 909937 13 3.
  2. ↑ 4D9 131 Australian Steam
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