NZR Q class (1878)

The NZR Q class were a pair of 2-4-4T type tank engines built by Rogers Locomotive and Machine Works in New Jersey. They were similar, in appearance, to the earlier K class of the same manufacturer and were purchased by the Rakaia & Ashburton Forks Railway Company[1] for working their newly constructed railway to Methven from Rakaia, which later became the Methven Branch.[2]

Not to be confused with NZR Q class (1901).

NZR Q Class (1878)
Type and origin
BuilderRogers
Build date1878
Total produced2
Specifications
Configuration:
​
 • Whyte2-4-4T
Gauge3 ft 6 in (1,067 mm)
Driver dia.48 in (1.219 m)
Adhesive weight14.2 long tons (14.4 t; 15.9 short tons)
Loco weight29 long tons (29.5 tonnes; 32.5 short tons)
Fuel typeCoal
Firebox:
 • Firegrate area		8 sq ft (0.74 m2)
Boiler pressure130 lbf/in2 (896 kPa)
Heating surface424 sq ft (39.4 m2)
CylindersTwo, outside
Cylinder size11 in × 158 in (279 mm × 4,013 mm)
Performance figures
Tractive effort4,062 lbf (18.07 kN)
Career
OperatorsRakaia & Ashburton Forks Railway, NZR
ClassQ
Number in class2
Numbers17, 51
First runAugust 1879
Last run1897
DispositionBoth scrapped

References
  1. "RAKAIA AND ASHBURTON FORKS RAILWAY COMPANY (LIMITED)". Papers Past. The Star. Retrieved 6 October 2014.
  2. Palmer & Stewart 1965, p. 46.

Bibliography
  • Stewart, W. W. (1974). When Steam was King. Wellington: A. H. & A. W. Reed Ltd. ISBN 978-0-589-00382-1.
  • Palmer, A. N.; Stewart, W. W. (1965). Cavalcade of New Zealand Locomotives. Wellington: A H. & A W. Reed. ISBN 978-0-207-94500-7.


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