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French State Railway 242 A
When the French State Railways were already planning the complete conversion to electric and diesel locomotives, André Chapelon designed an express steam locomotive with an output of 4,000 hp at the drawbar. As a basi...
| French State Railway 242 ARemove | |
|---|---|
| Variant | Standard |
| Built | 1943 |
| Manufacturers | Fives-Lille |
| Wheel arrangement | 2D2 |
| Gauge | 1435 mm |
| Length | 27330 mm |
| Service mass | 148000 kg |
| Top speed | 130 km/h |
| Power | |
| Engine |
General
| Property | French State Railway 242 A Standard Remove |
|---|---|
| Built | 1943 |
| Manufacturers | Fives-Lille |
| Wheel arrangement | 4-8-4 (Northern) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | French State Railway 242 A Standard Remove |
|---|---|
| Length | 27.33 m |
| Length loco | 17.77 m |
| Empty mass | 135.8 t |
| Service mass | 148 t |
| Adhesion mass | 84 t |
| Total mass | 225 t |
| Axle load | 21 t |
| Water capacity | 34,000 l |
| Fuel capacity | 11.4 t (coal) |
Boiler
| Property | French State Railway 242 A Standard Remove |
|---|---|
| Grate area | 5 m² |
| Evaporative heating surface | 252.7 m² |
| Superheater surface | 120.22 m² |
| Total heating surface | 372.9 m² |
Power plant
| Property | French State Railway 242 A Standard Remove |
|---|---|
| Driver diameter | 1,950 mm |
| Boiler pressure | 20.4 bar |
| Expansion type | compound |
| Cylinders | three, HP: 600 x 720 mm and LP: 680 x 760 mm |
Power
| Property | French State Railway 242 A Standard Remove |
|---|---|
| Power source | steam |
| Indicated power | 3,900 kW (5,303 PS) |
| Top speed | 130 km/h |
| Starting effort | 199.0 kN |
| Starting effort simple | 238.8 kN |
Calculated values
| Property | French State Railway 242 A Standard Remove |
|---|---|
| Factor of adhesion | 1 : 4.14 |
| Optimal speed | 121 km/h |
| Power-to-weight ratio | 26.4 kW/t |
| Adhesive weight/Total | 1 : 1.76 |
| Tractive force/Heating surface | 1 : 11.14 |
| Grate area/Heating surface | 1 : 74.58 |
| Total/Superheater | 1 : 2.10 |
