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South African class NG G16
The NG G16 was a direct development of the NG G13. The biggest differences were that the carrying axles now ran in roller bearings and the inner carrying axles were no longer just laterally adjustable, but radially ad...
| South African class NG G16Remove | |
|---|---|
| Variant | series 4 |
| Built | 1958 |
| Manufacturers | Cockerill;Beyer, Peacock & Co.;Hunslet-Taylor |
| Wheel arrangement | (1C1)(1C1) t ga |
| Gauge | 610 mm |
| Length | 14764 mm |
| Service mass | 63198 kg |
| Top speed | 40 km/h |
| Power | |
| Engine |
General
| Property | South African class NG G16series 4 |
|---|---|
| Built | 1958 |
| Manufacturers | Cockerill, Beyer, Peacock & Co., Hunslet-Taylor |
| Wheel arrangement | 2-6-2+2-6-2T (Double Prairie (Garratt)) |
| Gauge | 610 mm |
Dimensions and weights
| Property | South African class NG G16series 4 |
|---|---|
| Length | 14.76 m |
| Wheelbase | 4.23 m |
| Total wheelbase | 13.18 m |
| Service mass | 63.2 t |
| Adhesion mass | 41.1 t |
| Rigid wheelbase | 1.91 m |
| Axle load | 7 t |
| Water capacity | 8,479 l |
| Fuel capacity | 6.3 t (coal) |
Boiler
| Property | South African class NG G16series 4 |
|---|---|
| Grate area | 1.812 m² |
| Firebox surface | 7.627 m² |
| Tube heating surface | 77.936 m² |
| Evaporative heating surface | 85.564 m² |
| Superheater surface | 13.843 m² |
| Total heating surface | 99.4 m² |
Power plant
| Property | South African class NG G16series 4 |
|---|---|
| Driver diameter | 838 mm |
| Boiler pressure | 12.4 bar |
| Expansion type | simple expansion |
| Cylinders | four, 305 x 406 mm |
Power
| Property | South African class NG G16series 4 |
|---|---|
| Power source | steam |
| Estimated power | 522 kW (710 PS) |
| Top speed | 40 km/h |
| Starting effort | 95.0 kN |
Calculated values
| Property | South African class NG G16series 4 |
|---|---|
| Factor of adhesion | 1 : 4.25 |
| Optimal speed | 34 km/h |
| Power-to-weight ratio | 8.3 kW/t |
| Heating Surface Equivalent | 151.4 m² |
| Cylinder volume/HSE | 1 : 783.53 |
| Adhesive weight/Total | 1 : 1.54 |
| Tractive force/Heating surface | 1 : 19.97 |
| Grate area/Heating surface | 1 : 54.86 |
| Firebox/Tube surface | 1 : 10.22 |
| Total/Superheater | 1 : 6.18 |
