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 Middle Run Media | |
---|---|
Class | 421 |
Locobase ID | 9975 |
Railroad | C.F. Franco Ethiopien |
Country | Ethiopia |
Whyte | 2-8-2 |
Number in Class | 6 |
Road Numbers | 421-426 |
Gauge | Metre |
Number Built | 6 |
Builder | Davenport |
Year | 1947 |
Valve Gear | Walschaert |
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 / 1380 |
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 Volume | 244.40 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 5510 |
Same as above plus superheater percentage | 6832 |
Same as above but substitute firebox area for grate area | 28,024 |
Power L1 | 16,848 |
Power MT | 1851.43 |