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Great Western Railway class 6100 “Large Prairie”
Although its 70 members were only built between 1931 and 1935, the class 6100 was the direct successor to the class 5101 built form 1929 to 1949. It was developed specifically for use in the London area as a replaceme...
General
| Property | Great Western Railway class 6100 “Large Prairie”Remove |
|---|---|
| Built | 1931-1933, 1935 |
| Manufacturers | Swindon |
| Wheel arrangement | 2-6-2T (Prairie) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Great Western Railway class 6100 “Large Prairie”Remove |
|---|---|
| Length | 12.50 m |
| Wheelbase | 9.68 m |
| Rigid wheelbase | 4.50 m |
| Service weight | 79.7 t |
| Adhesive weight | 53.5 t |
| Axle load | 17.9 t |
| Water capacity | 9,093 l |
| Fuel capacity | 4.6 t (coal) |
Boiler
| Property | Great Western Railway class 6100 “Large Prairie”Remove |
|---|---|
| Grate area | 1.891 m² |
| Firebox surface | 11.316 m² |
| Tube heating surface | 106.374 m² |
| Evaporative heating surface | 117.69 m² |
| Superheater surface | 7.217 m² |
| Total heating surface | 124.9 m² |
Power plant
| Property | Great Western Railway class 6100 “Large Prairie”Remove |
|---|---|
| Driver diameter | 1,727 mm |
| Boiler pressure | 15.5 bar |
| Expansion type | simple expansion |
| Cylinders | two, 457 x 762 mm |
Power
| Property | Great Western Railway class 6100 “Large Prairie”Remove |
|---|---|
| Power source | steam |
| Estimated power | 820 kW (1,115 PS) |
| Starting effort | 121.6 kN |
Calculated values
| Property | Great Western Railway class 6100 “Large Prairie”Remove |
|---|---|
| Factor of adhesion | 1 : 4.32 |
| Optimal speed | 42 km/h |
| Power-to-weight ratio | 10.3 kW/t |
| Heating Surface Equivalent | 188.7 m² |
| Cylinder volume/HSE | 1 : 1,325.89 |
| Adhesive weight/Total | 1 : 1.49 |
| Tractive force/Heating surface | 1 : 20.33 |
| Grate area/Heating surface | 1 : 66.05 |
| Firebox/Tube surface | 1 : 9.40 |
| Total/Superheater | 1 : 16.31 |
