C.F. Franco Ethiopien 2-8-2 Locomotives in Ethiopia


Class Details by Steve Llanso of Sweat House Media

Class 421 (Locobase 9975)

Data from JP Crozet's Franco-Ethiopian Railway site, [], last accessed on 21 February 2009.

These were examples of the US Army Transportation Corps' meter-gauge Mikados (Locobase 434) as built by one of the smallest US steam locomotive builders. They served the CFE until 1960, when they were replaced by diesels.

NB: The direct heating surface (including the firebox heating surface) is an estimate calculated by subtracting the calculated tube heating surface from the reported total evaporative heating surface.

Principal Dimensions by Steve Llanso of Sweat House Media

Class421
Locobase ID9975
RailroadC.F. Franco Ethiopien
CountryEthiopia
Whyte2-8-2
Number in Class6
Road Numbers421-426
GaugeMetre
Number Built6
BuilderDavenport
Year1947
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)13.50 / 4.11
Engine Wheelbase (ft / m)28.25 / 8.61
Ratio of driving wheelbase to overall engine wheelbase 0.48
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)80,248 / 36,400
Engine Weight (lbs / kg)119,931 / 54,400
Tender Loaded Weight (lbs / kg)95,901 / 43,500
Total Engine and Tender Weight (lbs / kg)215,832 / 97,900
Tender Water Capacity (gals / ML)4990 / 18.90
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)33 / 16.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)48 / 1219
Boiler Pressure (psi / kPa)200 / 13.80
High Pressure Cylinders (dia x stroke) (in / mm)16" x 24" / 406x610
Tractive Effort (lbs / kg)21,760 / 9870.18
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.69
Heating Ability
Tubes (number - dia) (in / mm)95 - 2" / 51
Flues (number - dia) (in / mm)19 - 5.25" / 133
Flue/Tube length (ft / m)16.50 / 5.03
Firebox Area (sq ft / m2)113 / 10.50
Grate Area (sq ft / m2)27.55 / 2.56
Evaporative Heating Surface (sq ft / m2)1365 / 126.86
Superheating Surface (sq ft / m2)439 / 40.80
Combined Heating Surface (sq ft / m2)1804 / 167.66
Evaporative Heating Surface/Cylinder Volume244.40
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation5510
Same as above plus superheater percentage6832
Same as above but substitute firebox area for grate area28,024
Power L116,848
Power MT1851.43

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