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Atlantic Coast Line class P-5-B
The Atlantic Coast Line was one of the few US railroads which used Pacific locomotives for dual service. The P-5-B was the successor of the P-5-A that had been of the USRA Light Pacific design. The P-5-B had a driver ...
General
| Property | Atlantic Coast Line class P-5-B low axle load |
|---|---|
| Built | 1922-1926 |
| Manufacturers | Baldwin |
| Wheel arrangement | 4-6-2 (Pacific) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Atlantic Coast Line class P-5-B low axle load |
|---|---|
| Length | 24.63 m |
| Wheelbase | 10.64 m |
| Rigid wheelbase | 3.96 m |
| Total wheelbase | 21.59 m |
| Empty weight | 113.8 t |
| Service weight | 127.3 t |
| Adhesive weight | 80.5 t |
| Axle load | 27 t |
| Total weight | 212.6 t |
| Water capacity | 37,854 l |
| Fuel capacity | 14.5 t (coal) |
Boiler
| Property | Atlantic Coast Line class P-5-B low axle load |
|---|---|
| Grate area | 6.197 m² |
| Firebox surface | 25.037 m² |
| Tube heating surface | 271.463 m² |
| Evaporative heating surface | 295.943 m² |
| Superheater surface | 73.765 m² |
| Total heating surface | 369.7 m² |
Power plant
| Property | Atlantic Coast Line class P-5-B low axle load |
|---|---|
| Driver diameter | 1,753 mm |
| Boiler pressure | 14.5 bar |
| Expansion type | simple expansion |
| Cylinders | two, 635 x 711 mm |
Power
| Property | Atlantic Coast Line class P-5-B low axle load |
|---|---|
| Power source | steam |
| Estimated power | 2,163 kW (2,941 PS) |
| Starting effort | 201.4 kN |
Calculated values
| Property | Atlantic Coast Line class P-5-B low axle load |
|---|---|
| Factor of adhesion | 1 : 3.92 |
| Optimal speed | 66 km/h |
| Power-to-weight ratio | 17.0 kW/t |
| Heating Surface Equivalent | 569.2 m² |
| Cylinder volume/HSE | 1 : 791.38 |
| Adhesive weight/Total | 1 : 1.58 |
| Tractive force/Heating surface | 1 : 11.38 |
| Grate area/Heating surface | 1 : 59.66 |
| Firebox/Tube surface | 1 : 10.84 |
| Total/Superheater | 1 : 4.01 |
