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Natal Government Railways class F
The ten locomotives of the NGR class F were built for the Natal South Coast where frequent reverse running required a tank locomotive with a symmetric wheel arrangement. G.W. Reid had already rebuilt a single class G ...
General
| Property | Natal Government Railways class FRemove |
|---|---|
| Built | 1902 |
| Manufacturers | Neilson & Co., Reid & Co. |
| Wheel arrangement | 4-6-4T (Hudson) |
| Gauge | 1,067 mm (Cape gauge) |
Dimensions and weights
| Property | Natal Government Railways class FRemove |
|---|---|
| Length | 9.84 m |
| Wheelbase | 7.80 m |
| Rigid wheelbase | 2.36 m |
| Service weight | 39.8 t |
| Adhesive weight | 26 t |
| Axle load | 9.1 t |
| Water capacity | 4,910 l |
| Fuel capacity | 2.3 t (coal) |
Boiler
| Property | Natal Government Railways class FRemove |
|---|---|
| Grate area | 1.18 m² |
| Firebox surface | 6.503 m² |
| Tube heating surface | 74.601 m² |
| Evaporative heating surface | 81.104 m² |
| Total heating surface | 81.1 m² |
Power plant
| Property | Natal Government Railways class FRemove |
|---|---|
| Driver diameter | 991 mm |
| Boiler pressure | 12.1 bar |
| Expansion type | simple expansion |
| Cylinders | two, 381 x 559 mm |
Power
| Property | Natal Government Railways class FRemove |
|---|---|
| Power source | steam |
| Estimated power | 261 kW (355 PS) |
| Starting effort | 84.0 kN |
Calculated values
| Property | Natal Government Railways class FRemove |
|---|---|
| Factor of adhesion | 1 : 3.04 |
| Optimal speed | 19 km/h |
| Power-to-weight ratio | 6.6 kW/t |
| Heating Surface Equivalent | 113.6 m² |
| Cylinder volume/HSE | 1 : 1,121.44 |
| Adhesive weight/Total | 1 : 1.53 |
| Tractive force/Heating surface | 1 : 21.63 |
| Grate area/Heating surface | 1 : 68.73 |
| Firebox/Tube surface | 1 : 11.47 |
