Sud-Ouest 0-8-0 Locomotives in France

Class Details by Steve Llanso of Sweat House Media

Class 1162 (Locobase 11273)

Data from [], a site describing three of the postcards of the collection of Henri-Marie Petiet (Collection Henri-Marie Petiet (HMP)

ClichT de trains pris a +tampes, 1943-1946).

It may surprising that 50-year-old locomotives of the Orleans eight-coupled design (Locobase 11212) were superheated, but clearly there was work still to be done. The rebuilt engines, which retained their slide valves while increasing their driver diameters and cylinder diameters, also benefited from new boilers with superheaters and somewhat smaller grates.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID11273
Number in Class78
Road Numbers1141-1258
Number Built
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)13.39 / 4.08
Engine Wheelbase (ft / m)13.39 / 4.08
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)113,097 / 51,300
Engine Weight (lbs / kg)113,097 / 51,300
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)47 / 23.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)51.20 / 1300
Boiler Pressure (psi / kPa)126.20 / 8.70
High Pressure Cylinders (dia x stroke) (in / mm)20.47" x 25.59" / 520x650
Tractive Effort (lbs / kg)22,465 / 10189.96
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.03
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2)19.15 / 1.78
Evaporative Heating Surface (sq ft / m2)1442 / 134.02
Superheating Surface (sq ft / m2)466 / 43.33
Combined Heating Surface (sq ft / m2)1908 / 177.35
Evaporative Heating Surface/Cylinder Volume147.94
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2417
Same as above plus superheater percentage2997
Same as above but substitute firebox area for grate area
Power L1
Power MT

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