Compare locomotives
Add a locomotive
Great Western Railway class 1000 “County”
The County class of the GWR was developed by Hawksworth during World War II and was intended for mixed service. It was the last of a series of ten-wheelers begun by Churchward in 1902 with the Saint class. It included...
| Great Western Railway class 1000 “County”Remove | |
|---|---|
| Variant | reduced boiler pressure |
| Built | 1945-1947 |
| Manufacturers | Swindon |
| Wheel arrangement | 2C |
| Gauge | 1435 mm |
| Length | 19210 mm |
| Service mass | 78083 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Great Western Railway class 1000 “County”reduced boiler pressure |
|---|---|
| Built | 1945-1947 |
| Manufacturers | Swindon |
| Wheel arrangement | 4-6-0 (Ten-wheeler) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Great Western Railway class 1000 “County”reduced boiler pressure |
|---|---|
| Length | 19.21 m |
| Wheelbase | 8.31 m |
| Service mass | 78.1 t |
| Adhesion mass | 60 t |
| Total mass | 127.9 t |
| Rigid wheelbase | 4.50 m |
| Axle load | 20 t |
| Water capacity | 18,185 l |
| Fuel capacity | 7.1 t (coal) |
Boiler
| Property | Great Western Railway class 1000 “County”reduced boiler pressure |
|---|---|
| Grate area | 2.679 m² |
| Firebox surface | 15.701 m² |
| Tube heating surface | 143.535 m² |
| Evaporative heating surface | 159.236 m² |
| Superheater surface | 23.597 m² |
| Total heating surface | 182.8 m² |
Power plant
| Property | Great Western Railway class 1000 “County”reduced boiler pressure |
|---|---|
| Driver diameter | 1,905 mm |
| Boiler pressure | 17.2 bar |
| Expansion type | simple expansion |
| Cylinders | two, 470 x 762 mm |
Power
| Property | Great Western Railway class 1000 “County”reduced boiler pressure |
|---|---|
| Power source | steam |
| Estimated power | 1,603 kW (2,179 PS) |
| Starting effort | 129.4 kN |
Calculated values
| Property | Great Western Railway class 1000 “County”reduced boiler pressure |
|---|---|
| Factor of adhesion | 1 : 4.55 |
| Optimal speed | 76 km/h |
| Power-to-weight ratio | 20.5 kW/t |
| Heating Surface Equivalent | 284.9 m² |
| Cylinder volume/HSE | 1 : 927.56 |
| Adhesive weight/Total | 1 : 1.30 |
| Tractive force/Heating surface | 1 : 14.78 |
| Grate area/Heating surface | 1 : 68.25 |
| Firebox/Tube surface | 1 : 9.14 |
| Total/Superheater | 1 : 6.75 |
