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 | |
|---|---|
| Class | 101/411/551 |
| Locobase ID | 21076 |
| Railroad | Bolivia (FCAB) |
| Country | Bolivia |
| Whyte | 2-8-4T |
| Number in Class | 2 |
| Road Numbers | 101-102/411-412/551-552 |
| Gauge | Metre |
| Number Built | 2 |
| Builder | Hunslet Engine Co |
| Year | 1912 |
| Valve Gear | Walschaert |
| 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 / 1100 |
| 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 Volume | 274.11 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 4206 |
| Same as above plus superheater percentage | 4206 |
| Same as above but substitute firebox area for grate area | 17,856 |
| Power L1 | 4133 |
| Power MT | 279.73 |