Reseau departmental de l'Seine et Marne 0-6-2 Locomotives in France

Class Details by Steve Llanso of Sweat House Media

Class 3714 (Locobase 6226)

Data from [] (10 July 2004).

This tank joined thirteen other tanks of similar dimensions that had been produced by Cail in 1902-1904. According to the CFBS, the only difference was that the Buffaud-Robatel engine rolled on spoked drivers while the Cails had discs. The boiler had Serve tubes with internal fins. Photographs suggest that the locomotive frequently operated with the cab leading, thus putting the auxiliary axle first.

The fourteen locomotives pulled passenger trains until 1934. 3714 remained in service on the Nangis Jouy le Chatel lines after World War II for beet hauling.

After its retirement in 1965 and two abortive attempts to restore the locomotive for museum service, the Chemin de Fer Baie Somme association bought 3714 in 1971. Its first restoration was completed in 1981 and 3714 quickly proved a popular machine. By 1998, however, the firebox began springing leaks and the CFBS rebuilt the 3714 again. This time the old boiler was replaced with a welded unit of identical dimensions fitted with smooth tubes. Also replaced were the water tanks and the cab.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID6226
RailroadReseau departmental de l'Seine et Marne
Number in Class1
Road Numbers3714
Number Built1
Valve GearWalschaert
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)
Engine Weight (lbs / kg)57,100 / 25,900
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)57,100 / 25,900
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)29.90 / 760
Boiler Pressure (psi / kPa)181.30 / 12.50
High Pressure Cylinders (dia x stroke) (in / mm)12.6" x 14.96" / 320x380
Tractive Effort (lbs / kg)12,241 / 5552.43
Factor of Adhesion (Weight on Drivers/Tractive Effort)
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) 8.93 / 0.83
Evaporative Heating Surface (sq ft / m2)365 / 33.90
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)365 / 33.90
Evaporative Heating Surface/Cylinder Volume169.06
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1619
Same as above plus superheater percentage1619
Same as above but substitute firebox area for grate area
Power L1
Power MT

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