Bolivia 2-8-4 Locomotives in Bolivia

Class Details by Steve Llanso of Sweat House Media

Class 101/411/551 (Locobase 21076)

FF CC de Bolivia 1958 Locomotive Diagrams supplied in August 2022 by Allen Stanley from his extensive Rail Data Exchange collection. See also [], accessed 19 August 2007, and Martin Coombs, Bolivian steam locomotive list (October 2020), downloaded from []), p. 19. Works numbers were 1102-1103 in 1912.

This Leeds-built "Berkshire" tank used two more axles than comparably sized and contemporaneous Consolidations on the FCB. Although sub-standard in gauge, their proportions implied a bigger locomotive than their dimensions depict. Never superheated nor converted to piston valves, the engines nevertheless represented a sturdy pair of freighters.

They lasted at least until 1965 when Empresa Nacional de los Ferrocarriles del Estado (ENFE) gave them their final 500-series numbers.

Principal Dimensions by Steve Llanso of Middle Run Media

Locobase ID21076
RailroadBolivia (FCAB)
Number in Class2
Road Numbers101-102/411-412/551-552
Number Built2
BuilderHunslet Engine Co
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)11.75 / 3.58
Engine Wheelbase (ft / m)32.08 / 9.78
Ratio of driving wheelbase to overall engine wheelbase 0.37
Overall Wheelbase (engine & tender) (ft / m)32.08 / 9.78
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)130,293 / 59,100
Engine Weight (lbs / kg)192,419 / 87,280
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)192,419 / 87,280
Tender Water Capacity (gals / ML)3424 / 12.97
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)1849 / 7000
Minimum weight of rail (calculated) (lb/yd / kg/m)54 / 27
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)44 / 1118
Boiler Pressure (psi / kPa)159.50 / 11
High Pressure Cylinders (dia x stroke) (in / mm)17.99" x 24.02" / 457x610
Tractive Effort (lbs / kg)23,953 / 10864.91
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.44
Heating Ability
Tubes (number - dia) (in / mm)248 - 1.874" / 47.6
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)14.99 / 4.57
Firebox Area (sq ft / m2)111.95 / 10.40
Grate Area (sq ft / m2)26.37 / 2.45
Evaporative Heating Surface (sq ft / m2)1937 / 179.96
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1937 / 179.96
Evaporative Heating Surface/Cylinder Volume274.11
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4206
Same as above plus superheater percentage4206
Same as above but substitute firebox area for grate area17,856
Power L14133
Power MT279.73

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