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Southern Railway (USA) class Ss
In North Carolina, the Southern Railway operated the famous Saluda Grade with an incline that had an average of more than four percent for several miles . For use both as main locomotive and as helper on this grade an...
General
| Property | Southern Railway (USA) class SsRemove |
|---|---|
| Built | 1917-1918 |
| Manufacturers | Baldwin, ALCO |
| Wheel arrangement | 2-10-2 (Santa Fé) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Southern Railway (USA) class SsRemove |
|---|---|
| Length | 25.69 m |
| Wheelbase | 11.79 m |
| Rigid wheelbase | 6.27 m |
| Total wheelbase | 22.81 m |
| Service weight | 168.1 t |
| Adhesive weight | 133.5 t |
| Axle load | 27.3 t |
| Total weight | 247.9 t |
| Water capacity | 34,069 l |
| Fuel capacity | 10.9 t (coal) |
Boiler
| Property | Southern Railway (USA) class SsRemove |
|---|---|
| Grate area | 8.175 m² |
| Firebox surface | 33.306 m² |
| Tube heating surface | 452.949 m² |
| Evaporative heating surface | 486.255 m² |
| Superheater surface | 124.583 m² |
| Total heating surface | 610.8 m² |
Power plant
| Property | Southern Railway (USA) class SsRemove |
|---|---|
| Driver diameter | 1,448 mm |
| Boiler pressure | 13.1 bar |
| Expansion type | simple expansion |
| Cylinders | two, 711 x 813 mm |
Power
| Property | Southern Railway (USA) class SsRemove |
|---|---|
| Power source | steam |
| Estimated power | 2,759 kW (3,751 PS) |
| Starting effort | 316.2 kN |
Calculated values
| Property | Southern Railway (USA) class SsRemove |
|---|---|
| Factor of adhesion | 1 : 4.14 |
| Optimal speed | 53 km/h |
| Power-to-weight ratio | 16.4 kW/t |
| Heating Surface Equivalent | 902.0 m² |
| Cylinder volume/HSE | 1 : 715.99 |
| Adhesive weight/Total | 1 : 1.26 |
| Tractive force/Heating surface | 1 : 10.81 |
| Grate area/Heating surface | 1 : 74.72 |
| Firebox/Tube surface | 1 : 13.60 |
| Total/Superheater | 1 : 3.90 |
