NZR Q class (1878)

NZR Q Class (1878)

Type and origin Builder Rogers Build date 1878 Total produced 2

Specifications Configuration 2-4-4T Gauge 3 ft 6 in (1,067 mm) Driver diameter 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 Boiler pressure 130 lbf/in2 (896 kPa) Firegrate area 8 sq ft (0.74 m2) Heating surface 424 sq ft (39.4 m2) Cylinders Two, outside Cylinder size 11 in × 158 in (279 mm × 4,013 mm)

Performance figures Tractive effort 4,062 lbf (18.07 kN)

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

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

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 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.

Class register

Key:	In Service	Leased to ARTA	Withdrawn	Preserved	Under Repair	Scrapped

Number	Builder	Builder's Number	Entered service	Withdrawn	Notes
17	Rogers Locomotive Works	2512	August 1879	1898	Named "Livingstone".
51	Rogers Locomotive Works	2410	August 1879	31 March 1897	Named "Stanley".

References

• W.W.Stewart, When Steam Was King, REED, 1970