NZR WA class

The NZR WA class locomotives were a class of Tank locomotive built for use for New Zealand Railways (NZR). 11 were built in-house at the Addington Workshops and at Hillside Workshops. Four more were converted from old J class 2-6-0 locomotives.[1][2][3]

NZR WA class
Type and origin
Power typeSteam
BuilderNZR Addington Workshops, Hillside Workshops
Build date1892-1903
Specifications
Configuration:
​
 • Whyte2-6-2T
Gauge3 ft 6 in (1,067 mm)
Wheel diameter39.75 in (1.010 m)
42.5 in (1.080 m) on rebuilt locos
Wheelbase22 ft 3 in (6.78 m)
Length29 ft 8 in (9.04 m)
Adhesive weight26.2 long tons (26.6 t; 29.3 short tons)
Loco weight37.2 long tons (37.8 t; 41.7 short tons)
Fuel typeCoal
Fuel capacity2 long tons (2.0 t; 2.2 short tons)
Water cap950 imp gal (4,300 L; 1,140 US gal)
Firebox:
 • Firegrate area		12.0 sq ft (1.11 m2)
11 sq ft (1.0 m2) (nos 120, 262)
Boiler pressure170 psi (1,172 kPa)
160 psi (1,103 kPa) (nos 120, 262)
Heating surface738 sq ft (68.6 m2)
556 sq ft (51.7 m2) (nos 120, 262)
CylindersTwo
Cylinder size14 in × 20 in (356 mm × 508 mm)
Performance figures
Tractive effort13,420 lbf (59.7 kN)
11,810 lbf (52.5 kN) (rebuilt locos)
Career
Number in class15 (11 new, 4 rebuilt)
LocaleAll of New Zealand
First run1892
Retired1929-1962
Scrapped1962
Current ownerGisborne City Vintage Railway (1)
DispositionWithdrawn, 1 preserved

Three were fitted with brakes to assist descent on the Fell-operated Rewanui and Roa inclines on the South Island's West Coast Region. These were among the last in use.

Preservation

References
  1. Palmer & Stewart 1965, p. 35.
  2. Lloyd 1974, p. 50–109.
  3. Stewart 1974, p. 141.
  4. "Gisborne City Vintage Railway - History".

Bibliography
  • Lloyd, W. G. (1974). Register of New Zealand Railways Steam Locomotives 1863-1971 (2nd ed.). ISBN 0-9582072-1-6.
  • 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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