Queensland_Railways_steam_locomotive_classification

Queensland Railways steam locomotive classification

Queensland Railways steam locomotive classification

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Between 1864 and 1958, Queensland Railways ordered 47 types of locomotives for purposes such as freight, passenger and mail train use.

Classification

Until 1889, each of the isolated sections of the Queensland Railways adopted its own locomotive numbering system. With the impending joining of most of the sections, in 1890 a new centralised classification system was adopted to eliminate duplications. Locomotives on the Southern & Western Railway retained their existing numbers, with locomotives on other networks renumbered where there was a duplication.[1][2]

The classification system consisted of a letter, indicating the number of driving axles, followed by a number, indicating the cylinder diameter in inches and factions of inches. This was confusing for two reasons:

  • it differed from the international system
  • it could lead to several classes having the same classification number

Where classification numbers were duplicated, the classes were usually distinguished by the name of the builder, e.g. A10 Baldwin, A10 Fairlie, A10 Neilson.[1][2]

In the case of tank locomotives, the number of driving wheels was added as a prefix, e.g. the 6D16 class had six driving wheels. With all four wheel tank locomotives, the prefix was dropped, thus the 6D16 class became the D17 class.[1][2]

More information Number of driving axles, International classification ...

Improved versions of a similar class were given a second identical letter. For example, the improved version of the D17 was the DD17.

Classes

More information Classification, Image ...

See also

References

  1. [1]
    Armstrong, John (1985). Locomotives in the Tropics Volume 1. Brisbane: Australian Railway Historical Society. p. 8. ISBN 0 909937 13 3.
  2. [2]
    Clark, Peter (2012). An Australian Locomotive Guide. Rosenberg Publishing. p. 16. ISBN 9781921719554.
  3. [3]
    "B11 – Originally C Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  4. [4]
    "B12 – Originally E Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  5. [5]
    "A10 Fairlie – Originally A Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  6. [6]
    "A11 – Originally Large A Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  7. [7]
    "A10 Baldwin – Originally American Passenger Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  8. [8]
    "C13 Baldwin Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  9. [9]
    "C15 – Originally Large Consolation Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  10. [10]
    "B11 Baldwin Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  11. [11]
    "A12 – Originally American Passenger Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  12. [12]
    "6D11½ Motor Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  13. [13]
    "6D13 – Originally F – Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  14. [14]
    "C16 Baldwin – Large Consolidation Classba « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  15. [15]
    "B13 Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  16. [16]
    "C13 Dubs – Originally Small Consolation Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  17. [17]
    "4D10 – Ipswich Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  18. [18]
    "8D15 Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  19. [19]
    "B15 Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  20. [20]
    "A14 Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  21. [21]
    "4D11½ Abt Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  22. [22]
    "PB15 Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  23. [23]
    "6D13½ Abt Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  24. [24]
    "6D16 Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  25. [25]
    "6D11½ Crane Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  26. [26]
    "C16 Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  27. [27]
    "6D13½ later B13½ Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  28. [28]
    "B17 Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  29. [29]
    "C18 later CC19 Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  30. [30]
    "C17 Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  31. [31]
    "C19 Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  32. [32]
    "AC16 Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  33. [33]
    "Australian Standard Garratt « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  34. [34]
    "BB18¼ Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
  35. [35]
    "Beyer-Garratt Class « qrig.org – queensland railway's interest group". Retrieved 24 November 2019.
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