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Great Western Railway steam rail motors
For rural lines with a small number of passengers, the GWR started to acquire steam rail motors starting in 1903. They were not only cheaper to operate and maintain, but also allowed to set up additional halts without...
| Great Western Railway steam rail motorsRemove | |
|---|---|
| Variant | Diagram A1 |
| Built | 1903-1908 |
| Manufacturers | Swindon;Kerr, Stuart & Co.;Gloucester Railway Carriage & Wagon Co. |
| Wheel arrangement | DT4-2 |
| Gauge | 1435 mm |
| Length | 17374 mm |
| Service mass | |
| Top speed | 48 km/h |
| Power | |
| Engine |
General
| Property | Great Western Railway steam rail motors Diagram A1 Remove |
|---|---|
| Built | 1903-1908 |
| Manufacturers | Swindon, Kerr, Stuart & Co., Gloucester Railway Carriage & Wagon Co. |
| Wheel arrangement | 0-4-0+4T |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Great Western Railway steam rail motors Diagram A1 Remove |
|---|---|
| Length | 17.37 m |
| Rigid wheelbase | 2.44 m |
| Water capacity | 2,044 l |
| Fuel capacity | 0.5 t (coal) |
Boiler
| Property | Great Western Railway steam rail motors Diagram A1 Remove |
|---|---|
| Grate area | 1.065 m² |
| Firebox surface | 4.119 m² |
| Tube heating surface | 58.118 m² |
| Evaporative heating surface | 62.238 m² |
| Total heating surface | 62.2 m² |
Power plant
| Property | Great Western Railway steam rail motors Diagram A1 Remove |
|---|---|
| Driver diameter | 1,041 mm |
| Boiler pressure | 9.7 bar |
| Expansion type | simple expansion |
| Cylinders | two, 305 x 406 mm |
Power
| Property | Great Western Railway steam rail motors Diagram A1 Remove |
|---|---|
| Power source | steam |
| Top speed | 48 km/h |
| Starting effort | 29.7 kN |
Calculated values
| Property | Great Western Railway steam rail motors Diagram A1 Remove |
|---|---|
| Heating Surface Equivalent | 82.8 m² |
| Cylinder volume/HSE | 1 : 715.99 |
| Tractive force/Heating surface | 1 : 9.98 |
| Grate area/Heating surface | 1 : 58.44 |
| Firebox/Tube surface | 1 : 14.11 |
