The reference for locomotives and railcars


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French State Railway 141 R
France | 1945 | 1,340 produced
Lima Locomotive Works
141 R 1126 in July 2006 at Toulouse-Matabiau station
141 R 1126 in July 2006 at Toulouse-Matabiau station

Since there was a major shortage of locomotives after the liberation of France in World War II and the North American manufacturers still had capacities, SNCF ordered a total of 1,340 Mikados for freight and passenger service. The actual design came from Baldwin and was based on the USRA Light Mikado, which was made a little lighter and adapted to the French loading gauge. The locomotives were easier to maintain than the French ones, being built after American principles, and quickly spread across the country. The coal-fired locomotives were almost exclusively used in front of freight trains and the oil-fired ones could also often be found in front of passenger trains. They remained in service until 1974, when all steam operations in France ceased.

ManufacturerBaldwin, ALCO, Lima, Montreal Locomotive Works, Canadian Locomotive Co.
Axle config2-8-2 (Mikado) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length79 ft 2 in
Length loco48 ft 0 3/8 in
Wheelbase35 ft 2 1/16 in
Fixed wheelbase16 ft 5 9/16 in
Total wheelbase66 ft 8 in
Service weight255,736 lbs
Adhesive weight176,370 lbs
Total weight421,082 lbs
Axle load44,092 lbs
Water capacity7,925 us gal
Fuel capacity25,353 lbs (coal)2,510 us gal (oil)
Power sourcesteam
Indicated power2,883 hp (2,150 kW)
Optimal speed40 mph
Top speed62 mph
Starting effort45,459 lbf
Power Plant
Driver diameter65 in
Boiler pressure225 psi
Expansion typesimple
Cylinderstwo, 23 1/2 x 28 in
Grate area55.5 sq ft
Firebox area294 sq ft
Tube heating area2,406.1 sq ft
Evaporative heating area2,700 sq ft
Superheater area704 sq ft
Total heating area3,404 sq ft
Calculated Values
steam locomotive
last changed: 07/2023

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