Number in Class: 35
|Tender Weight: 52.9 tons||Total Weight: 145.9 tons||Adhesive Weight:
|Length over Buffers:
|Driver Wheel Dia.: 54"||Cylinders HP:
Two - 20" x 26"
|Grate Area: 47.7 sq ft||Evaporative Area:
1933 sq ft
485 sq ft
30815 lbs f
|Coal Capacity: 7.5 tons||Oil Capacity: 1570 gals||Water Capacity:
As a result of experience with the 'K' class, the 'Ka' became the logical development and several new features were incorporated in the design.
Roller bearings were applied to all axles on both engine and tender, and frames were cut from high-tensile steel. An A.C.F.I. feedwater heater was fitted to the first thirty engines and
these were fitted with a metal shroud designed to conceal the heater equipment mounted on the smokebox.
The running boards and boiler top were also provided with panels to conceal as much of the pipework as possible.
The total effect gave these locomotives a semi-streamlined appearance.
After World War 2, the feedwater heater was substituted by exhaust-steam injectors and the shrouding was removed.
The performance of these 1400 h.p. locomotives was outstanding in all passenger and freight services and were well-liked by their engine crews.
All Ka class engines were converted to oil burning between 1947 and 1953, and finally they succumbed to dieselisation.
Mainline Steam, Auckland - Ka 942, NZR Hutt #325/1940
Steam Inc., Paekakariki - Ka 945, NZR Hutt #328/1941 Stored