Compare locomotives
Add a locomotive
Western Australian Government Railways classes P and Pr “River”
In the 1920s, WAGR found that it did not have a sufficient number of suitable locomotives for long-distance express trains and that the 1902 E-class Pacifics were no longer up to date. The main aim was to eliminate th...
| Western Australian Government Railways classes P and Pr “River”Remove | |
|---|---|
| Variant | |
| Built | 1938-1944 |
| Manufacturers | Midland Railway Workshops |
| Wheel arrangement | 2C1 |
| Gauge | 1067 mm |
| Length | 18999 mm |
| Service mass | 104145 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Western Australian Government Railways classes P and Pr “River”Remove |
|---|---|
| Built | 1938-1944 |
| Manufacturers | Midland Railway Workshops |
| Wheel arrangement | 4-6-2 (Pacific) |
| Gauge | 1,067 mm |
Dimensions and weights
| Property | Western Australian Government Railways classes P and Pr “River”Remove |
|---|---|
| Length | 19.00 m |
| Service mass | 104.1 t |
| Axle load | 14.4 t |
| Water capacity | 11,091 l |
| Fuel capacity | 7.1 t (coal) |
Boiler
| Property | Western Australian Government Railways classes P and Pr “River”Remove |
|---|---|
| Grate area | 3.252 m² |
| Evaporative heating surface | 138.797 m² |
| Superheater surface | 32.888 m² |
| Total heating surface | 171.7 m² |
Power plant
| Property | Western Australian Government Railways classes P and Pr “River”Remove |
|---|---|
| Driver diameter | 1,372 mm |
| Boiler pressure | 12.1 bar |
| Expansion type | simple expansion |
| Cylinders | two, 483 x 660 mm |
Power
| Property | Western Australian Government Railways classes P and Pr “River”Remove |
|---|---|
| Power source | steam |
| Estimated power | 895 kW (1,217 PS) |
| Starting effort | 115.0 kN |
Calculated values
| Property | Western Australian Government Railways classes P and Pr “River”Remove |
|---|---|
| Optimal speed | 48 km/h |
| Power-to-weight ratio | 8.6 kW/t |
| Tractive force/Heating surface | 1 : 13.99 |
| Grate area/Heating surface | 1 : 52.79 |
| Total/Superheater | 1 : 4.22 |
