New Zealand Government Railways 0-4-0 Locomotives in New_Zealand
Class Details by Steve Llanso of Sweat House Media
Class A (Locobase 5162)
Data from John Garner and his website [
] (October 2002).
Garner notes that this little engine was variously described as "a most absurd-looking dwarf", "a mere mite", "a veritable toy locomotive". Supplied from Dubs & Co (12) and Yorkshire (2), they served light branch lines out of Canterbury. After they were retired by the NZR, they went into industrial and logging service.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | A |
| Locobase ID | 5162 |
| Railroad | New Zealand Government Railways |
| Country | New Zealand |
| Whyte | 0-4-0T |
| Number in Class | 14 |
| Road Numbers | |
| Gauge | 3'6" |
| Number Built | 14 |
| Builder | several |
| Year | 1873 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 5.59 / 1.70 |
| Engine Wheelbase (ft / m) | 5.59 / 1.70 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | 5.59 / 1.70 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 24,640 / 11,177 |
| Engine Weight (lbs / kg) | 24,640 / 11,177 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 24,640 / 11,177 |
| Tender Water Capacity (gals / ML) | 396 / 1.50 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 0.40 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 21 / 10.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 30 / 762 |
| Boiler Pressure (psi / kPa) | 120 / 830 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 8" x 15" / 203x381 |
| Tractive Effort (lbs / kg) | 3264 / 1480.53 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 7.55 |
| 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) | 4.20 / 0.39 |
| Evaporative Heating Surface (sq ft / m2) | 269 / 25 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 269 / 25 |
| Evaporative Heating Surface/Cylinder Volume | 308.25 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 504 |
| Same as above plus superheater percentage | 504 |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |