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Gold Coast Government Railways class 221
The class 221 was a successful design of Mountain locomotive that was built by Vulcan Foundry over a long period of 24 years. It had a long and sleek boiler with Belpaire firebox , combustion chamber and Robinson supe...
| Gold Coast Government Railways class 221Remove | |
|---|---|
| Variant | Standard |
| Built | 1924, 1938, 1948 |
| Manufacturers | Vulcan Foundry |
| Wheel arrangement | 2D1 |
| Gauge | 1067 mm |
| Length | |
| Service mass | 74832 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Gold Coast Government Railways class 221 Standard Remove |
|---|---|
| Built | 1924, 1938, 1948 |
| Manufacturers | Vulcan Foundry |
| Wheel arrangement | 4-8-2 (Mountain) |
| Gauge | 1,067 mm |
Dimensions and weights
| Property | Gold Coast Government Railways class 221 Standard Remove |
|---|---|
| Wheelbase | 9.37 m |
| Total wheelbase | 16.97 m |
| Service mass | 74.8 t |
| Adhesion mass | 52.8 t |
| Total mass | 108.1 t |
| Rigid wheelbase | 3.89 m |
| Water capacity | 11,364 l |
| Fuel capacity | 6.6 t (coal) |
Boiler
| Property | Gold Coast Government Railways class 221 Standard Remove |
|---|---|
| Grate area | 2.986 m² |
| Firebox surface | 18.395 m² |
| Tube heating surface | 164.903 m² |
| Evaporative heating surface | 183.298 m² |
| Superheater surface | 32.237 m² |
| Total heating surface | 215.5 m² |
Power plant
| Property | Gold Coast Government Railways class 221 Standard Remove |
|---|---|
| Driver diameter | 1,143 mm |
| Boiler pressure | 12.4 bar |
| Expansion type | simple expansion |
| Cylinders | two, 495 x 610 mm |
Power
| Property | Gold Coast Government Railways class 221 Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 1,044 kW (1,419 PS) |
| Starting effort | 138.0 kN |
Calculated values
| Property | Gold Coast Government Railways class 221 Standard Remove |
|---|---|
| Factor of adhesion | 1 : 3.76 |
| Optimal speed | 47 km/h |
| Power-to-weight ratio | 14.0 kW/t |
| Heating Surface Equivalent | 339.7 m² |
| Cylinder volume/HSE | 1 : 691.43 |
| Adhesive weight/Total | 1 : 1.42 |
| Tractive force/Heating surface | 1 : 13.37 |
| Grate area/Heating surface | 1 : 72.18 |
| Firebox/Tube surface | 1 : 8.96 |
| Total/Superheater | 1 : 5.69 |
