Paris a Versailles 2-2-0 Locomotives in France

Class Details by Steve Llanso of Sweat House Media

Class Jean Bart (Locobase 20009)

Data from E Flachat and J Petiet, Guide du Mechanicien-Conducteur de Machine Locomotives ...(Paris: Mathias, Libraire, 1840), passim, basic data in Tables B & C, pp. 218-219. See also Roland Arzul's summary of early Paris-Versailles locomotives at [], last accessed 13 September 2015.

Jean Bart and her sister Saint Cloud were among the very first steam locomotives to operate on the P-V.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassJean Bart
Locobase ID20009
RailroadParis a Versailles (Rive Droit)
Number in Class2
Road Numbers
Number Built2
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)13,228 / 6000
Engine Weight (lbs / kg)24,251 / 11,000
Tender Loaded Weight (lbs / kg)13,228 / 6000
Total Engine and Tender Weight (lbs / kg)37,479 / 17,000
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)22 / 11
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)59.80 / 1520
Boiler Pressure (psi / kPa)87 / 6
High Pressure Cylinders (dia x stroke) (in / mm)12.01" x 18.11" / 305x460
Tractive Effort (lbs / kg)3230 / 1465.11
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.10
Heating Ability
Tubes (number - dia) (in / mm)104 - 1.614" / 41
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 8.20 / 2.50
Firebox Area (sq ft / m2)40.37 / 3.75
Grate Area (sq ft / m2) 6.89 / 0.64
Evaporative Heating Surface (sq ft / m2)401 / 37.23
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)401 / 37.23
Evaporative Heating Surface/Cylinder Volume168.87
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation599
Same as above plus superheater percentage599
Same as above but substitute firebox area for grate area3512
Power L12201
Power MT366.83

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