Sfax-Gafsa 2-6-0 Locomotives in Tunisia


Class Details by Steve Llanso of Sweat House Media

Class 41 (Locobase 12432)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 23, p. 67. Works numbers were 17882-17886 in June 1900.

Formal name for the enterprise operating the Sfax-Gafsa railway was the Compagnie des Phosphates et du Chemin de Fer de Gafsa.

Principal Dimensions by Steve Llanso of Middle Run Media
Class41
Locobase ID12432
RailroadSfax-Gafsa
CountryTunisia
Whyte2-6-0
Number in Class5
Road Numbers41-45
GaugeMetre
Number Built5
BuilderBurnham, Williams & Co
Year1900
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 9.50 / 2.90
Engine Wheelbase (ft / m)16.67 / 5.08
Ratio of driving wheelbase to overall engine wheelbase 0.57
Overall Wheelbase (engine & tender) (ft / m)36.67 / 11.18
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)62,000 / 28,123
Engine Weight (lbs / kg)72,000 / 32,659
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)2120 / 8.03
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)34 / 17
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)47.20 / 1199
Boiler Pressure (psi / kPa)169.70 / 1170
High Pressure Cylinders (dia x stroke) (in / mm)15" x 20" / 381x508
Tractive Effort (lbs / kg)13,752 / 6237.81
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.51
Heating Ability
Tubes (number - dia) (in / mm)207 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 9.33 / 2.84
Firebox Area (sq ft / m2)80.20 / 7.45
Grate Area (sq ft / m2)13.10 / 1.22
Evaporative Heating Surface (sq ft / m2)950 / 88.29
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)950 / 88.29
Evaporative Heating Surface/Cylinder Volume232.24
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2223
Same as above plus superheater percentage2223
Same as above but substitute firebox area for grate area13,610
Power L14409
Power MT470.33

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