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Great Western Railway classes 4800 and 5800
The GWR class 4800 was a 0-4-2T locomotive designed by Collett for passenger service on branch lines, especially with “autocoach” driving trailers. For this it was equipped with a mechanism that allowed to operate the...
| Great Western Railway classes 4800 and 5800Remove | |
|---|---|
| Variant | Standard |
| Built | 1932-1936 |
| Manufacturers | Swindon |
| Wheel arrangement | B1 t |
| Gauge | 1435 mm |
| Length | |
| Service mass | 41963 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Great Western Railway classes 4800 and 5800 Standard Remove |
|---|---|
| Built | 1932-1936 |
| Manufacturers | Swindon |
| Wheel arrangement | 0-4-2T |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Great Western Railway classes 4800 and 5800 Standard Remove |
|---|---|
| Wheelbase | 4.72 m |
| Service mass | 42 t |
| Adhesion mass | 27.8 t |
| Rigid wheelbase | 4.72 m |
| Axle load | 14.1 t |
| Water capacity | 3,638 l |
| Fuel capacity | 2.7 t (coal) |
Boiler
| Property | Great Western Railway classes 4800 and 5800 Standard Remove |
|---|---|
| Grate area | 1.189 m² |
| Firebox surface | 7.73 m² |
| Tube heating surface | 80.807 m² |
| Evaporative heating surface | 88.537 m² |
| Total heating surface | 88.5 m² |
Power plant
| Property | Great Western Railway classes 4800 and 5800 Standard Remove |
|---|---|
| Driver diameter | 1,575 mm |
| Boiler pressure | 11.4 bar |
| Expansion type | simple expansion |
| Cylinders | two, 406 x 610 mm |
Power
| Property | Great Western Railway classes 4800 and 5800 Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 298 kW (405 PS) |
| Starting effort | 61.8 kN |
Calculated values
| Property | Great Western Railway classes 4800 and 5800 Standard Remove |
|---|---|
| Factor of adhesion | 1 : 4.42 |
| Optimal speed | 29 km/h |
| Power-to-weight ratio | 7.1 kW/t |
| Heating Surface Equivalent | 127.2 m² |
| Cylinder volume/HSE | 1 : 1,243.45 |
| Adhesive weight/Total | 1 : 1.51 |
| Tractive force/Heating surface | 1 : 14.58 |
| Grate area/Heating surface | 1 : 74.46 |
| Firebox/Tube surface | 1 : 10.45 |
