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Great Western Railway Iron Duke and Rover class
Based on the success of the Firefly class, Daniel Gooch wanted to build an even more powerful and faster express locomotive. The driving wheels were increased from seven to eight feet and the largest possible boiler w...
General
| Property | Great Western Railway Iron Duke and Rover class Rover |
|---|---|
| Built | 1871-1888 |
| Manufacturers | Swindon |
| Wheel arrangement | 4-2-2 (Single) |
| Gauge | 2,140 mm (GWR broad gauge) |
Dimensions and weights
| Property | Great Western Railway Iron Duke and Rover class Rover |
|---|---|
| Wheelbase | 5.49 m |
| Rigid wheelbase | 5.49 m |
| Service weight | 42.4 t |
| Adhesive weight | 16.7 t |
| Axle load | 16.7 t |
| Water capacity | 13,639 l |
Boiler
| Property | Great Western Railway Iron Duke and Rover class Rover |
|---|---|
| Grate area | 2.23 m² |
| Firebox surface | 12.728 m² |
| Tube heating surface | 180.975 m² |
| Evaporative heating surface | 193.703 m² |
| Total heating surface | 193.7 m² |
Power plant
| Property | Great Western Railway Iron Duke and Rover class Rover |
|---|---|
| Driver diameter | 2,438 mm |
| Boiler pressure | 9.7 bar |
| Expansion type | simple expansion |
| Cylinders | two, 457 x 610 mm |
Power
| Property | Great Western Railway Iron Duke and Rover class Rover |
|---|---|
| Power source | steam |
| Estimated power | 447 kW (608 PS) |
| Top speed | 129 km/h |
| Starting effort | 42.9 kN |
Calculated values
| Property | Great Western Railway Iron Duke and Rover class Rover |
|---|---|
| Factor of adhesion | 1 : 3.82 |
| Optimal speed | 64 km/h |
| Power-to-weight ratio | 10.6 kW/t |
| Heating Surface Equivalent | 257.3 m² |
| Cylinder volume/HSE | 1 : 777.79 |
| Adhesive weight/Total | 1 : 2.54 |
| Tractive force/Heating surface | 1 : 4.62 |
| Grate area/Heating surface | 1 : 86.86 |
| Firebox/Tube surface | 1 : 14.22 |
