EF de Sul Miniera 4-6-2 Locomotives in Brazil


Class Details by Steve Llanso of Sweat House Media

Class 260 (Locobase 21136)

Data from JP Crozet's Franco-Ethiopian Railway site, [], last accessed on 21 February 2009. (Thanks to Teemu Koivumaki for his 14 April 2023 email supplying a wealth of detail on the class's provenance.) Works numbers were 1274 in 1915 and

Teemu Koivumaki wrote Locobase "Originally. this type [was] built [for] the Madrid a Aragon 101-106 in 1915, but never delivered and [were] stored in the works of Haine st Pierre." They lingered on the fast track for years before new buyers apeared. According to Koivumaki, Four of of the six were sold to Brazil with three heading passenger service on the RSM..

Straight-back ("Crampton") boiler with Kylchap stack and nozzle in the smokebox.

Another was sold to Ethiopia (Locobase 9974).

Principal Dimensions by Steve Llanso of Sweat House Media

Class260
Locobase ID21136
RailroadEF de Sul Miniera
CountryBrazil
Whyte4-6-2
Number in Class3
Road Numbers260-262
GaugeMetre
Number Built3
BuilderFUF Haine Saint-Pierre
Year1922
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m) 8.86 / 2.70
Engine Wheelbase (ft / m)25.59 / 7.80
Ratio of driving wheelbase to overall engine wheelbase 0.35
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)66,139 / 30,000
Engine Weight (lbs / kg)105,822 / 48,000
Tender Loaded Weight (lbs / kg)72,973 / 33,100
Total Engine and Tender Weight (lbs / kg)178,795 / 81,100
Tender Water Capacity (gals / ML)3168 / 12
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 4.40 / 4
Minimum weight of rail (calculated) (lb/yd / kg/m)37 / 18.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)49.20 / 1250
Boiler Pressure (psi / kPa)184.20 / 12.70
High Pressure Cylinders (dia x stroke) (in / mm)15.75" x 22.05" / 400x560
Tractive Effort (lbs / kg)17,407 / 7895.69
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.80
Heating Ability
Tubes (number - dia) (in / mm)97 - 1.969" / 50
Flues (number - dia) (in / mm)15 - 5" / 127
Flue/Tube length (ft / m)13.12 / 4
Firebox Area (sq ft / m2)107.60 / 10
Grate Area (sq ft / m2)26.90 / 2.50
Evaporative Heating Surface (sq ft / m2)1308 / 121.52
Superheating Surface (sq ft / m2)323 / 30.01
Combined Heating Surface (sq ft / m2)1631 / 151.53
Evaporative Heating Surface/Cylinder Volume263.06
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4955
Same as above plus superheater percentage5946
Same as above but substitute firebox area for grate area23,784
Power L114,439
Power MT1443.89

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