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Victorian Railways class R
The class R was only created after the Second World War as an express locomotive to replace the class A[h]2[/h] ten-wheelers. By installing a stoker, they wanted to ensure that it would perform well with coal of varyi...
General
| Property | Victorian Railways class RRemove |
|---|---|
| Built | 1951-1953 |
| Manufacturers | North British |
| Wheel arrangement | 4-6-4 (Hudson) |
| Gauge | 1,600 mm (Irish broad gauge) |
Dimensions and weights
| Property | Victorian Railways class RRemove |
|---|---|
| Length | 23.55 m |
| Wheelbase | 11.05 m |
| Rigid wheelbase | 3.91 m |
| Total wheelbase | 20.42 m |
| Service weight | 108.9 t |
| Adhesive weight | 59.4 t |
| Axle load | 19.8 t |
| Total weight | 189.8 t |
| Water capacity | 40,917 l |
| Fuel capacity | 6.1 t (coal) |
Boiler
| Property | Victorian Railways class RRemove |
|---|---|
| Grate area | 3.902 m² |
| Firebox surface | 26.477 m² |
| Tube heating surface | 181.904 m² |
| Evaporative heating surface | 208.382 m² |
| Superheater surface | 42.921 m² |
| Total heating surface | 251.3 m² |
Power plant
| Property | Victorian Railways class RRemove |
|---|---|
| Driver diameter | 1,854 mm |
| Boiler pressure | 14.8 bar |
| Expansion type | simple expansion |
| Cylinders | two, 540 x 711 mm |
Power
| Property | Victorian Railways class RRemove |
|---|---|
| Power source | steam |
| Estimated power | 1,641 kW (2,231 PS) |
| Starting effort | 140.8 kN |
Calculated values
| Property | Victorian Railways class RRemove |
|---|---|
| Factor of adhesion | 1 : 4.14 |
| Optimal speed | 71 km/h |
| Power-to-weight ratio | 15.1 kW/t |
| Heating Surface Equivalent | 426.6 m² |
| Cylinder volume/HSE | 1 : 762.90 |
| Adhesive weight/Total | 1 : 1.83 |
| Tractive force/Heating surface | 1 : 11.70 |
| Grate area/Heating surface | 1 : 64.40 |
| Firebox/Tube surface | 1 : 6.87 |
| Total/Superheater | 1 : 4.86 |
