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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...
General
| Property | French State Railway 242 ARemove |
|---|---|
| Built | 1943 |
| Manufacturers | Fives-Lille |
| Wheel arrangement | 4-8-4 (Northern) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | French State Railway 242 ARemove |
|---|---|
| Length | 27.33 m |
| Length loco | 17.77 m |
| Empty weight | 135.8 t |
| Service weight | 148 t |
| Adhesive weight | 84 t |
| Axle load | 21 t |
| Total weight | 225 t |
| Water capacity | 34,000 l |
| Fuel capacity | 11.4 t (coal) |
Boiler
| Property | French State Railway 242 ARemove |
|---|---|
| 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 ARemove |
|---|---|
| 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 ARemove |
|---|---|
| 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 ARemove |
|---|---|
| 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 |
