NZR Q class (1878)

Specifications
Specifications
Configuration:;
• Whyte	2-4-4T
Gauge	3 ft 6 in (1,067 mm)
Driver dia.	48 in (1.219 m)
Adhesive weight	14.2 long tons (14.4 t; 15.9 short tons)
Loco weight	29 long tons (29.5 tonnes; 32.5 short tons)
Fuel type	Coal
Firebox:
• Grate area	8 sq ft (0.74 m2)
Boiler pressure	130 lbf/in2 (896 kPa)
Heating surface	424 sq ft (39.4 m2)
Cylinders	Two, outside
Cylinder size	11 in × 158 in (279 mm × 4,013 mm)

Type and origin
Type and origin
Builder	Rogers
Build date	1878
Total produced	2

NZR Q Class (1878)
NZR Q Class (1878)
Builder
Type and origin
Builder	Rogers
Build date	1878
Total produced	2
Configuration:;
Specifications
Configuration:;
• Whyte	2-4-4T
Gauge	3 ft 6 in (1,067 mm)
Driver dia.	48 in (1.219 m)
Adhesive weight	14.2 long tons (14.4 t; 15.9 short tons)
Loco weight	29 long tons (29.5 tonnes; 32.5 short tons)
Fuel type	Coal
Firebox:
• Grate area	8 sq ft (0.74 m2)
Boiler pressure	130 lbf/in2 (896 kPa)
Heating surface	424 sq ft (39.4 m2)
Cylinders	Two, outside
Cylinder size	11 in × 158 in (279 mm × 4,013 mm)
Tractive effort
Performance figures
Tractive effort	4,062 lbf (18.07 kN)
Operators
Career
Operators	Rakaia & Ashburton Forks Railway, NZR
Class	Q
Number in class	2
Numbers	17, 51
First run	August 1879
Last run	1897
Disposition	Both scrapped

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 for working their newly constructed railway to Methven from Rakaia, which later became the Methven Branch.

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