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The reference for locomotives and railcars

Paris-Lyon-Méditerranée No. 4701 to 4982

French State Railway 5-240 A 1 to 282

France 1907 282 produced
Die Lokomotive, July 1932

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 firebox, which was offset by making it relatively long. The locomotives could haul 1,618 tonnes on the flat at 40 km/h and 501 tonnes on a one percent incline at the same speed. From 1919 more than 200 locomotives received a superheater and the four-cylinder compound engine was replaced with a simple one. They also pulled heavy passenger trains when needed and were in use until 1952.

Technical data

General

Property as built superheated
Built 1907-1910 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 as built superheated
Length 19.90 m
Length loco 12.95 m
Wheelbase 9.25 m
Total wheelbase 14.10 m
Empty mass 68 t 69.1 t
Service mass 74.6 t 75.8 t
Adhesion mass 56 t 59.8 t
Rigid wheelbase 5.50 m
Axle load 14 t 14.9 t
Water capacity 20,000 l

Boiler

Property as built superheated
Grate area 3.08 m²
Firebox surface 15.8 m² 16 m²
Tube heating surface 231.8 m² 159.47 m²
Evaporative heating surface 247.6 m² 175.47 m²
Total heating surface 247.6 m² 240.6 m²
Superheater surface 65.17 m²

Power plant

Property as built superheated
Driver diameter 1,500 mm
Boiler pressure 16 bar 12 bar
Expansion type compound simple expansion
Cylinders four, HP: 380 x 650 mm and LP: 600 x 650 mm four, 460 x 650 mm

Power

Property as built superheated
Power source steam
Estimated power 850 kW (1,156 PS) 900 kW (1,224 PS)
Top speed 85 km/h
Starting effort 121.5 kN 187.1 kN
Starting effort simple 145.8 kN

Calculated values

Property as built superheated
Factor of adhesion 1 : 4.52 1 : 3.13
Optimal speed 43 km/h 29 km/h
Power-to-weight ratio 11.4 kW/t 11.9 kW/t
Heating Surface Equivalent 326.6 m² 385.8 m²
Cylinder volume/HSE 1 : 1,014.14 1 : 1,119.97
Adhesive weight/Total 1 : 1.33 1 : 1.27
Tractive force/Heating surface 1 : 10.25 1 : 16.23
Grate area/Heating surface 1 : 80.39 1 : 78.13
Firebox/Tube surface 1 : 14.67 1 : 9.97
Total/Superheater 1 : 2.69
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