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Great Western Railway class 6800 “Grange”
As early as in 1901, Churchward's program of standard locomotives for the GWR included a two-cylinder 4-6-0 mixed traffic class. For the time being, this was not built and ten years later, the 2-6-0 class 4300 was bui...
| Great Western Railway class 6800 “Grange”Remove | |
|---|---|
| Variant | Standard |
| Built | 1936-1939 |
| Manufacturers | Swindon |
| Wheel arrangement | 2C |
| Gauge | 1435 mm |
| Length | 19210 mm |
| Service mass | 75188 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Great Western Railway class 6800 “Grange” Standard Remove |
|---|---|
| Built | 1936-1939 |
| Manufacturers | Swindon |
| Wheel arrangement | 4-6-0 (Ten-wheeler) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Great Western Railway class 6800 “Grange” Standard Remove |
|---|---|
| Length | 19.21 m |
| Wheelbase | 8.26 m |
| Total wheelbase | 12.93 m |
| Service mass | 75.2 t |
| Adhesion mass | 56 t |
| Total mass | 115.8 t |
| Rigid wheelbase | 4.50 m |
| Axle load | 18.7 t |
| Water capacity | 15,910 l |
| Fuel capacity | 7.1 t (coal) |
Boiler
| Property | Great Western Railway class 6800 “Grange” Standard Remove |
|---|---|
| Grate area | 2.515 m² |
| Firebox surface | 14.38 m² |
| Tube heating surface | 142.348 m² |
| Evaporative heating surface | 156.728 m² |
| Superheater surface | 23.504 m² |
| Total heating surface | 180.2 m² |
Power plant
| Property | Great Western Railway class 6800 “Grange” Standard Remove |
|---|---|
| Driver diameter | 1,727 mm |
| Boiler pressure | 15.5 bar |
| Expansion type | simple expansion |
| Cylinders | two, 470 x 762 mm |
Power
| Property | Great Western Railway class 6800 “Grange” Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 1,305 kW (1,774 PS) |
| Starting effort | 128.5 kN |
Calculated values
| Property | Great Western Railway class 6800 “Grange” Standard Remove |
|---|---|
| Factor of adhesion | 1 : 4.28 |
| Optimal speed | 63 km/h |
| Power-to-weight ratio | 17.4 kW/t |
| Heating Surface Equivalent | 275.6 m² |
| Cylinder volume/HSE | 1 : 958.85 |
| Adhesive weight/Total | 1 : 1.34 |
| Tractive force/Heating surface | 1 : 14.89 |
| Grate area/Heating surface | 1 : 71.66 |
| Firebox/Tube surface | 1 : 9.90 |
| Total/Superheater | 1 : 6.67 |
