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Great Western Railway class 5101 “Large Prairie”
Collett had a revised version of the earlier 5100 class procured from 1929. Since the class 5100 locomotives had the numbers 5111 to 5149 in addition to the number 5100, the first examples were given the numbers 5101 ...
| Great Western Railway class 5101 “Large Prairie”Remove | |
|---|---|
| Variant | Standard |
| Built | 1929-1949 |
| Manufacturers | Swindon |
| Wheel arrangement | 1C1 t |
| Gauge | 1435 mm |
| Length | 12497 mm |
| Service mass | 79709 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Great Western Railway class 5101 “Large Prairie” Standard Remove |
|---|---|
| Built | 1929-1949 |
| Manufacturers | Swindon |
| Wheel arrangement | 2-6-2T (Prairie) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Great Western Railway class 5101 “Large Prairie” Standard Remove |
|---|---|
| Length | 12.50 m |
| Wheelbase | 9.68 m |
| Service mass | 79.7 t |
| Rigid wheelbase | 4.50 m |
| Water capacity | 9,093 l |
| Fuel capacity | 4.1 t (coal) |
Boiler
| Property | Great Western Railway class 5101 “Large Prairie” Standard Remove |
|---|---|
| Grate area | 1.891 m² |
| Firebox surface | 11.316 m² |
| Tube heating surface | 106.369 m² |
| Evaporative heating surface | 117.684 m² |
| Superheater surface | 7.637 m² |
| Total heating surface | 125.3 m² |
Power plant
| Property | Great Western Railway class 5101 “Large Prairie” Standard Remove |
|---|---|
| Driver diameter | 1,727 mm |
| Boiler pressure | 13.8 bar |
| Expansion type | simple expansion |
| Cylinders | two, 457 x 762 mm |
Power
| Property | Great Western Railway class 5101 “Large Prairie” Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 764 kW (1,039 PS) |
| Starting effort | 108.1 kN |
Calculated values
| Property | Great Western Railway class 5101 “Large Prairie” Standard Remove |
|---|---|
| Optimal speed | 43 km/h |
| Power-to-weight ratio | 9.6 kW/t |
| Heating Surface Equivalent | 189.5 m² |
| Cylinder volume/HSE | 1 : 1,320.04 |
| Tractive force/Heating surface | 1 : 18.01 |
| Grate area/Heating surface | 1 : 66.27 |
| Firebox/Tube surface | 1 : 9.40 |
| Total/Superheater | 1 : 15.41 |
