Chemins de Fer du Medoc 2-4-0 Locomotives in France


Class Details by Steve Llanso of Sweat House Media

Class unknown (Locobase 9169)

Data from A. Sampite, Les Chemins de Fer a Faible Trafic en France (Paris: Baudry et Cie, 1888), p. 49. See also [link] for a history of these Freycinet Plan railways

Locobases 9167-9171 present the data for 5 different locomotive designs that operated on the CF du Medoc. These were the oldest locomotives on the line at the time of Sampite's report in 1888 and likely entered service on the Est first.


Class unknown (Locobase 9170)

Data from A. Sampite, Les Chemins de Fer a Faible Trafic en France (Paris: Baudry et Cie, 1888), p. 49. See also [link] for a history of these Freycinet Plan railways

Locobases 9167-9171 present the data for 5 different locomotive designs that operated on the CF du Medoc. Compared to the Est locomotives that were built a decade earlier (Locobase 9170), these were a little bigger and had higher-pressure boilers.


Class unknown (Locobase 9171)

Data from A. Sampite, Les Chemins de Fer a Faible Trafic en France (Paris: Baudry et Cie, 1888), p. 49. See also [link] for a history of these Freycinet Plan railways

Locobases 9167-9171 present the data for five different locomotive designs that operated on the CF du Medoc. This was the biggest of the five designs by far and stood on the tallest drivers. It is in this set of locomotives that one gets the strongest flavor of mainline power indicated by the line's identity as a ligne d'Interet General.

Principal Dimensions by Steve Llanso of Middle Run Media
Classunknownunknownunknown
Locobase ID9169 9170 9171
RailroadChemins de Fer du MedocChemins de Fer du MedocChemins de Fer du Medoc
CountryFranceFranceFrance
Whyte2-4-0T2-4-0T2-4-0T
Number in Class222
Road Numbers
GaugeStdStdStd
Number Built222
BuilderEstGrafenstadenKoechlin
Year185418641868
Valve GearStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)10.27 / 3.1310.83 / 3.3011.48 / 3.50
Ratio of driving wheelbase to overall engine wheelbase
Overall Wheelbase (engine & tender) (ft / m)10.27 / 3.1310.83 / 3.30
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)41,888 / 19,00039,683 / 18,00046,958 / 21,300
Engine Weight (lbs / kg)57,320 / 26,00056,879 / 25,80069,446 / 31,500
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)35 / 17.5033 / 16.5039 / 19.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)55.90 / 142061.40 / 156066.10 / 1680
Boiler Pressure (psi / kPa)103 / 710120.40 / 830120.40 / 830
High Pressure Cylinders (dia x stroke) (in / mm)14.57" x 23.62" / 370x60015.75" x 22.05" / 400x56016.54" x 22.05" / 420x560
Tractive Effort (lbs / kg)7853 / 3562.079117 / 4135.419339 / 4236.10
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.33 4.35 5.03
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)60.26 / 5.6076.40 / 7.1080.70 / 7.50
Grate Area (sq ft / m2)11.30 / 1.0512.91 / 1.2013.56 / 1.26
Evaporative Heating Surface (sq ft / m2)947 / 88999 / 92.801204 / 111.89
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)947 / 88999 / 92.801204 / 111.89
Evaporative Heating Surface/Cylinder Volume207.77200.92219.57
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation116415541633
Same as above plus superheater percentage116415541633
Same as above but substitute firebox area for grate area620791999716
Power L1262834223888
Power MT276.63380.22365.07

All material Copyright © SteamLocomotive.com
Wes Barris