ALVF / PLM 2-8-0 Locomotives in France


Class Details by Steve Llanso of Sweat House Media

Class 36 /140 K (Locobase 10006)

Data from US Military Railway Service Equipment Data Book for French Locomotives supplied by Allen Stanley in March 2004 from his extensive Rail Data Exchange; corrected and supplemented by "140 n° ALVF 36 à 70, puis K 1 à 35 du PLM" in the Traction-Vapeur section of the WikiPLM at [link],_puis_K_1_%C3%A0_35_du_PLM, last accessed 2 September 2023. See also "140-101 à 370 État ou 140 C SNCF" in Wikipedia at [link], last accessed 2 September 2023; and Locobase 6375 (for the Etats).Thanks to Piotr Staszewski for his 1 September 2023 email correcting the builder and supplying the works numbers.) Works numbers were 3235-3244 in 1919, 32-45-3269 in 1920.

The ALVF was the French Artillery arm of the French Army and they were the original purchasers of this set of British-built Consolidations. Like the later Pershings, these were built to French specifications that included a Zara truck. They had larger-diameter boilers than most of the French Consolidations, but used the Belpaire firebox.

In 1924, the PLM took them over and placed them in their own 140 K class.

Principal Dimensions by Steve Llanso of Middle Run Media
Class36 /140 K
Locobase ID10006
RailroadALVF / PLM
CountryFrance
Whyte2-8-0
Number in Class35
Road Numbers36-70/K 1-35
GaugeStd
Number Built35
BuilderVulcan Foundry
Year1920
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)16.73 / 5.10
Engine Wheelbase (ft / m)24.93 / 7.60
Ratio of driving wheelbase to overall engine wheelbase 0.67
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)37,126 / 16,840
Weight on Drivers (lbs / kg)143,278 / 64,990
Engine Weight (lbs / kg)162,811 / 73,850
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)5417 / 20.52
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 8.80 / 8
Minimum weight of rail (calculated) (lb/yd / kg/m)60 / 30
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)56.70 / 1440
Boiler Pressure (psi / kPa)227.70 / 1570
High Pressure Cylinders (dia x stroke) (in / mm)23.23" x 25.59" / 590x650
Tractive Effort (lbs / kg)47,138 / 21381.46
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.04
Heating Ability
Tubes (number - dia) (in / mm)174 - 1.969" / 50
Flues (number - dia) (in / mm)24 - 5.236" / 133
Flue/Tube length (ft / m)14.76 / 4.50
Firebox Area (sq ft / m2)182.02 / 16.91
Grate Area (sq ft / m2)34.01 / 3.16
Evaporative Heating Surface (sq ft / m2)1830 / 170
Superheating Surface (sq ft / m2)539 / 50.12
Combined Heating Surface (sq ft / m2)2369 / 220.12
Evaporative Heating Surface/Cylinder Volume145.78
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation7744
Same as above plus superheater percentage9525
Same as above but substitute firebox area for grate area50,979
Power L113,012
Power MT800.86

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