South Australian Railways O class (First)

The South Australian Railways O Class (1st) Locomotives were built by Baldwin Locomotive Works for the South Australian Railways. They entered service in 1881 on the S.A.R. system and were both withdrawn and scrapped by 1904.[1]

South Australian Railways O Class (1st)
SLNSW 28752 South Australian Railways O class steam locomotive c. 1870
Type and origin
Power typeSteam
BuilderBaldwin Locomotive Works
Serial number5227 & 5228
Build date1880
Total produced2
Specifications
Configuration:
​
 • Whyte2-8-0
 • UIC1'D 2'2'
Gauge5'3" Broad Gauge
Driver dia.4 ft. 0 in.
Length53 ft. 5¼ in.
Total weight77 tons 1 cwt
Fuel typeCoal
Fuel capacity6 tons 1 cwt 1 qtr
Water cap2,800 gallons
Boiler pressure130 lbs p.s.i.
Heating surface1,184 square feet
Cylinders2
Cylinder size20 in. x 24 in.
Performance figures
Tractive effort22,100 lbs
Career
OperatorsSouth Australian Railways
ClassO
Number in class2
Numbers54 & 55
First run25.2.1881
Withdrawn1904
Scrapped1904
Dispositionall scrapped

History

These two locomotives built by Baldwin Locomotive Works USA for the South Australian Railways and formed the O class. Their main job was for hauling goods trains on the Intercolonial Railway. When they were first in service they became the largest locomotives on the S.A.R. system. Though it wasn't to be all that it seemed to be, the O class were unsuccessful. They were not successful performers on the Adelaide Hills line and instead were diverted to work on the Northern line. With the great success from the new R class (4-6-0) locomotives that arrived in 1886, the two O class (2-8-0) locomotives were pulled from service in 1904 with only a short working life of 23 years.[2]

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References
  1. Drymalik, Chris. "Broad Gauge O-class 2-8-0 locomotive". Chris's Commonwealth Railways Information (ComRails). Retrieved 3 August 2019.
  2. FLUCK, R. E.; SAMPSON, R.; BIRD, K. J. (1986). STEAM LOCOMOTIVES AND RAILCARS OF THE SOUTH AUSTRALIAN RAILWAYS. South Australia: Mile End Railway Museum (S.A.) Inc. p. 60. ISBN 0959 5073 37.
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