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Paris-Lyon-Méditerranée No. 4701 to 4982
For fast freight trains on the line through the Cevennes, the PLM opted for the 4-8-0 wheel arrangement, which still allowed a large boiler with a low axle load and good curve guidance. The only problem was the narrow...
General
| Property | Paris-Lyon-Méditerranée No. 4701 to 4982 superheated |
|---|---|
| Built | 1919-1936 |
| Manufacturers | Franco-Belge, SFCM, Schneider, Batignolles-Châtillon |
| Wheel arrangement | 4-8-0 (Twelve-wheeler) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Paris-Lyon-Méditerranée No. 4701 to 4982 superheated |
|---|---|
| Length | 19.90 m |
| Length loco | 12.95 m |
| Wheelbase | 9.25 m |
| Rigid wheelbase | 5.50 m |
| Total wheelbase | 14.10 m |
| Empty weight | 69.1 t |
| Service weight | 75.8 t |
| Adhesive weight | 59.8 t |
| Axle load | 14.9 t |
| Water capacity | 20,000 l |
Boiler
| Property | Paris-Lyon-Méditerranée No. 4701 to 4982 superheated |
|---|---|
| Grate area | 3.08 m² |
| Firebox surface | 16 m² |
| Tube heating surface | 159.47 m² |
| Evaporative heating surface | 175.47 m² |
| Superheater surface | 65.17 m² |
| Total heating surface | 240.6 m² |
Power plant
| Property | Paris-Lyon-Méditerranée No. 4701 to 4982 superheated |
|---|---|
| Driver diameter | 1,500 mm |
| Boiler pressure | 12 bar |
| Expansion type | simple expansion |
| Cylinders | four, 460 x 650 mm |
Power
| Property | Paris-Lyon-Méditerranée No. 4701 to 4982 superheated |
|---|---|
| Power source | steam |
| Estimated power | 900 kW (1,224 PS) |
| Top speed | 85 km/h |
| Starting effort | 187.1 kN |
Calculated values
| Property | Paris-Lyon-Méditerranée No. 4701 to 4982 superheated |
|---|---|
| Factor of adhesion | 1 : 3.13 |
| Optimal speed | 29 km/h |
| Power-to-weight ratio | 11.9 kW/t |
| Heating Surface Equivalent | 385.8 m² |
| Cylinder volume/HSE | 1 : 1,119.97 |
| Adhesive weight/Total | 1 : 1.27 |
| Tractive force/Heating surface | 1 : 16.23 |
| Grate area/Heating surface | 1 : 78.13 |
| Firebox/Tube surface | 1 : 9.97 |
| Total/Superheater | 1 : 2.69 |
