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South African class 15CA
The class 15CA was developed from the class 15C mixed-traffic 4-8-2 locomotive which was the first in the line of the big boilered Mountains of the SAR. The major problem was that the twelve class members suffered fro...
General
| Property | South African class 15CA Remove |
|---|---|
| Built | 1926-1929 |
| Manufacturers | ALCO, Baldwin, Breda, North British |
| Wheel arrangement | 4-8-2 (Mountain) |
| Gauge | 1,067 mm (Cape gauge) |
Dimensions and weights
| Property | South African class 15CA Remove |
|---|---|
| Length | 22.33 m |
| Wheelbase | 10.87 m |
| Rigid wheelbase | 4.80 m |
| Total wheelbase | 19.90 m |
| Service weight | 108 t |
| Adhesive weight | 71.4 t |
| Axle load | 18.1 t |
| Total weight | 178.5 t |
| Water capacity | 27,278 l |
| Fuel capacity | 14.2 t (coal) |
Boiler
| Property | South African class 15CA Remove |
|---|---|
| Grate area | 4.459 m² |
| Firebox surface | 20.717 m² |
| Tube heating surface | 219.344 m² |
| Evaporative heating surface | 240.061 m² |
| Superheater surface | 62.245 m² |
| Total heating surface | 302.3 m² |
Power plant
| Property | South African class 15CA Remove |
|---|---|
| Driver diameter | 1,524 mm |
| Boiler pressure | 14.5 bar |
| Expansion type | simple expansion |
| Cylinders | two, 610 x 711 mm |
Power
| Property | South African class 15CA Remove |
|---|---|
| Power source | steam |
| Estimated power | 1,454 kW (1,977 PS) |
| Starting effort | 213.4 kN |
Calculated values
| Property | South African class 15CA Remove |
|---|---|
| Factor of adhesion | 1 : 3.28 |
| Optimal speed | 42 km/h |
| Power-to-weight ratio | 13.5 kW/t |
| Heating Surface Equivalent | 468.1 m² |
| Cylinder volume/HSE | 1 : 886.81 |
| Adhesive weight/Total | 1 : 1.51 |
| Tractive force/Heating surface | 1 : 14.75 |
| Grate area/Heating surface | 1 : 67.80 |
| Firebox/Tube surface | 1 : 10.59 |
| Total/Superheater | 1 : 3.86 |
