NZR LA class

NZR LA Class
New Zealand Midland Railway Co. NO 3 (NZR LA 312) at Stillwater Junction during the opening of the Midland Railway between Greymouth and Stillwater, 1889.
Type and origin
Power typeSteam
BuilderNasmyth, Wilson & Co.
Serial number311–312, 315, 322–323
Build date1887
Total produced5
Specifications
Configuration:
 • Whyte4-4-0T; later 4-4-2T
Gauge3 ft 6 in (1,067 mm)
Driver dia.45 in (1.143 m)
Length26 ft 2 in (7.98 m)
Adhesive weight19.2 long tons (19.5 tonnes; 21.5 short tons)
Loco weight26.6 long tons (27.0 t; 29.8 short tons)
Firebox:
 • Grate area9.8 sq ft (0.91 m2)
Boiler pressure140 lbf/in2 (965 kPa)
Heating surface506 sq ft (47.0 m2)
CylindersTwo, outside
Cylinder size12 in × 18 in (305 mm × 457 mm)
Performance figures
Tractive effort6,450 lbf (28.7 kN)
Career
NumbersNZMRC 1–5
NZR 310–314
Retired1924–1926

The NZR LA class was a class of 4-4-0T steam locomotives used by the New Zealand Railways Department and the New Zealand Midland Railway Company. They were built by Nasmyth, Wilson and Company in 1887 for New Zealand Midland Railway Company, and were taken over by NZR in 1900, when the government acquired the incomplete Midland line. The designation also applies to the NZR 4-4-0Trebuilds of the Avonside L class of 1875 which were later reclassified LB after being rebuilt as 4-4-2Ts.[1]