New Zealand Government Railways 0-4-2 Locomotives in New_Zealand

Class Details by Steve Llanso of Sweat House Media

Class C (Locobase 5168)

Data from John Garner's comprehensive site at [] ... (October 2002). Originally produced without any auxiliary axles, these locomotives came from Glasgow. Dubs & Co delivered five of the class and Neilson accounted for 11 more.

When they arrived on the railway, however, the lack of a truck led to severe oscillations over 15 mph. The railway's shops added a Bissel trailing axle under the cab before 1880. Photographs also show a cabbage stack.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID5168
RailroadNew Zealand Government Railways
CountryNew Zealand
Number in Class16
Road Numbers
Number Built16
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)6 / 1.83
Engine Wheelbase (ft / m)13 / 3.96
Ratio of driving wheelbase to overall engine wheelbase 0.46
Overall Wheelbase (engine & tender) (ft / m)13 / 3.96
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)31,808 / 14,428
Engine Weight (lbs / kg)35,168 / 15,952
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)35,168 / 15,952
Tender Water Capacity (gals / ML)360 / 1.36
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 0.50 / 1
Minimum weight of rail (calculated) (lb/yd / kg/m)27 / 13.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)30 / 762
Boiler Pressure (psi / kPa)120 / 8.30
High Pressure Cylinders (dia x stroke) (in / mm)9.5" x 18" / 241x457
Tractive Effort (lbs / kg)5523 / 2505.19
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.76
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2) 7.30 / 0.68
Evaporative Heating Surface (sq ft / m2)392 / 36.43
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)392 / 36.43
Evaporative Heating Surface/Cylinder Volume265.45
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation876
Same as above plus superheater percentage876
Same as above but substitute firebox area for grate area
Power L1
Power MT

All material Copyright ©
Wes Barris