Villazon a Atocha/FCB 2-8-0 Locomotives in Bolivia


Class Details by Steve Llanso of Sweat House Media

Class Manona Soza (Locobase 21089)

Data from FC CC de Bolivia 1958 Locomotive Diagrams, supplied in August 2022 by Allen Stanley from his extensive Railroad Data Exchange collection; and Martin Coombs, Bolivian steam locomotive list (October 2020), downloaded from []), pp. 44, 66. Works number was 11955 in May 1927.

FCVA bought only this one small superheater Consolidations at a relatively late date.

NB: FCVA tube heating surface of 86.82 sq m (935 sq ft) seems to have been calculated from the inside (fire side) diameter. But the tube diameter shown appears to use the external diameter. Locobase uses the external diameter to reconcile the two measurements and bring the superheater ratio down to a still-high, more likely value.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassManona Soza
Locobase ID21089
RailroadVillazon a Atocha/FCB
CountryBolivia
Whyte2-8-0
Number in Class1
Road Numbers7/601
GaugeMetre
Number Built1
BuilderBorsig
Year1927
Valve GearTrick
Locomotive Length and Weight
Driver Wheelbase (ft / m)13.78 / 4.20
Engine Wheelbase (ft / m)21.16 / 6.45
Ratio of driving wheelbase to overall engine wheelbase 0.65
Overall Wheelbase (engine & tender) (ft / m)44.62 / 13.60
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)88,185 / 40,000
Engine Weight (lbs / kg)99,208 / 45,000
Tender Loaded Weight (lbs / kg)79,366 / 36,000
Total Engine and Tender Weight (lbs / kg)178,574 / 81,000
Tender Water Capacity (gals / ML)3960 / 15
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)2 / 6
Minimum weight of rail (calculated) (lb/yd / kg/m)37 / 18.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)43.30 / 1100
Boiler Pressure (psi / kPa)169.70 / 11.70
High Pressure Cylinders (dia x stroke) (in / mm)17.72" x 21.26" / 450x540
Tractive Effort (lbs / kg)22,238 / 10087.00
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.97
Heating Ability
Tubes (number - dia) (in / mm)112 - 1.496" / 38
Flues (number - dia) (in / mm)21 - 4.724" / 120
Flue/Tube length (ft / m)12.80 / 3.90
Firebox Area (sq ft / m2)119.48 / 11.10
Grate Area (sq ft / m2)29.82 / 2.77
Evaporative Heating Surface (sq ft / m2)1013 / 94.11
Superheating Surface (sq ft / m2)328 / 30.43
Combined Heating Surface (sq ft / m2)1341 / 124.54
Evaporative Heating Surface/Cylinder Volume166.93
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation5060
Same as above plus superheater percentage6275
Same as above but substitute firebox area for grate area25,142
Power L19208
Power MT920.80

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