SNCF 240P
| SNCF 4-240A | |
|---|---|
 |
|
| #4703, the third 4-240A 4-8-0, during the PO days. | |
| Power type | Steam |
| Designer | André Chapelon |
| Driver diameter | 1,900 mm (74.80 in) |
| Length | 20.79 m (68 ft 3 in) |
| Axle load | 20 t (19.7 long tons; 22.0 short tons) |
| Weight on drivers | 80.5 t (79.2 long tons; 88.7 short tons) |
| Locomotive weight | 136.5 t (134.3 long tons; 150.5 short tons) |
| Tender capacity | 12 t (11.8 long tons; 13.2 short tons) coal 34,000 L (7,500 imp gal; 9,000 US gal) |
| Boiler pressure | 2.00 MPa (290 psi) |
| Firegrate area | 3.75 m2 (40.4 sq ft) |
| Heating surface: Total |
213 m2 (2,290 sq ft) |
| Superheater area | 68 m2 (730 sq ft) |
| High-pressure cylinder size |
420 mm × 650 mm (16.535 in × 25.591 in) |
| Low-pressure cylinder size |
650 mm × 690 mm (25.591 in × 27.165 in) |
| Power output | 4,000 hp (3.0 MW) |
| Tractive effort | 26.040 kN (57,410 lb) "starting" mode, 20.761 kN (45,770 lb) normal compound mode |
The SNCF 4-240A class and SNCF 5-240P class was a group of 37 (12 + 25) 4-8-0 steam locomotives designed by André Chapelon, and regarded by some, as one of his best designs.
They started life as Chemin de Fer de Paris à Orléans (Paris-Orleans Railway) 4500 class 4-6-2s before being rebuilt. The new boiler with the long, narrow Belpaire firebox came from the Nord "Super Pacifics". With all the pipes, domes, and pumps, these were double-chimneyed, husky looking locomotives of very different appearance than the Pacifics.
Use
4-240A
SNCF south-west.
These 12 4-8-0s were created to tackle the 1:10 gradients of the Brive to Montauban division of the line from Paris to Toulouse, steeper than those to Bordeaux. The intention was to provide one-third more adhesive weight than the 4500s. On level ground, they could manage 28 coaches at 53 mph (85 km/h).
5-240P
SNCF south-east.
These 25 4-8-0s were created by 1940 to tackle the 1:12 gradient of the Les Laumes to Dijon division of the line from Paris to Lyon. Used in passenger and fast freight services between Paris and Lyon. Withdrawn by 1950 with the electrification of the Paris - Dijon section. These later locomotives had mechanical stokers and bogie tenders.
References
- Hollingsworth, Brian; Arthur F. Cook (1987,1996;). The Great Book of Trains. Salamander Books Ltd. ISBN 0-517-18462-1.
- Hollingsworth, Brian (2000). The Illustrated Dictionary of Trains of the World. London: Salamander Books Ltd. pp. 118–121. ISBN 1-84065-177-6.
- "Chapelon's 4 8 0 P, 2 12 0 A 1, 4 8 4 A 1, 2 8 2 E 113". www.chapelon.net. Retrieved 2009-04-19.
