Saint-Germain 0-6-0 Locomotives in France

Class Details by Steve Llanso of Sweat House Media

Class unknown (Locobase 9118)

Data from Louis Figuier, Les Merveilles de la Science (Paris, Furne, Jouvet et cie, 1867), pp. 388-390

Locobase 6049 describes the general run of the Ouest's classic six-coupled tank design, but the current entry shows a larger locomotive with a bigger boiler and smaller drivers. Also, it appears to have had both a separate tender and supplementary tanks along the boiler, the latter to increase the adhesion weight for greater power.

Figuier says that these engines were adopted after the atmospheric railway system originally installed on the incline near Saint-Germain proved unsatisfactory. They were derived from the Ouest class and showed their power on the grade to a very satisfactory degree.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID9118
Number in Class
Road Numbers
Number Built
Valve Gear
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)
Ratio of driving wheelbase to overall engine wheelbase
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)72,752 / 33,000
Engine Weight (lbs / kg)72,752 / 33,000
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)72,752 / 33,000
Tender Water Capacity (gals / ML)818 / 3.10
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 3.10 / 3
Minimum weight of rail (calculated) (lb/yd / kg/m)40 / 20
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)46.10 / 1170
Boiler Pressure (psi / kPa)130.50 / 9
High Pressure Cylinders (dia x stroke) (in / mm)16.54" x 26.77" / 420x680
Tractive Effort (lbs / kg)17,622 / 7993.21
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.13
Heating Ability
Tubes (number - dia) (in / mm)147 - 1.772" / 45
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)12.24 / 3.73
Firebox Area (sq ft / m2)69.19 / 6.43
Grate Area (sq ft / m2)12.05 / 1.12
Evaporative Heating Surface (sq ft / m2)903 / 83.94
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)903 / 83.94
Evaporative Heating Surface/Cylinder Volume135.64
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1573
Same as above plus superheater percentage1573
Same as above but substitute firebox area for grate area9029
Power L11881
Power MT171.00

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