FC del Cauca 0-6-2 Locomotives in Colombia

Class Details by Steve Llanso of Sweat House Media

Class 7 (Locobase 10873)

Data from "Narrow-Gauge Locomotive for the Cauca Railway", American Engineer & Car Builder (December 1898), p. 398 and from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University. Works number was 16234 in September 1898.

Somewhat surprisingly, this little locomotive trailed a tender. According to the report, the Cauca had 200-ft radius curves and 30-40 lb/yard and no turntables. After studying the Forney tank design, Baldwin concluded that only with a separate tender could the engine carry enough water and fuel (1 cord of wood). The builder put a pony truck just behind the closely spaced drivers and swung the tender from a pivot over the pony truck axle.

The arrangement allowed bi-directional running with a low likelihood of derailing. Other features were a large cabbage stack (to capture the plentitude of sparks associated with a wood fire), steam dome shaped like the Capitol, and large cab.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID10873
RailroadFC del Cauca
Number in Class1
Road Numbers7
Number Built1
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 6.25 / 1.90
Engine Wheelbase (ft / m)11.17 / 3.40
Ratio of driving wheelbase to overall engine wheelbase 0.56
Overall Wheelbase (engine & tender) (ft / m)22.58 / 6.88
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)42,000 / 19,051
Engine Weight (lbs / kg)48,000 / 21,772
Tender Loaded Weight (lbs / kg)17,000 / 7711
Total Engine and Tender Weight (lbs / kg)65,000 / 29,483
Tender Water Capacity (gals / ML)1000 / 3.79
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)23 / 11.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)33 / 838
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)12" x 16" / 305x406
Tractive Effort (lbs / kg)9495 / 4306.86
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.42
Heating Ability
Tubes (number - dia) (in / mm)112 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 9.50 / 2.90
Firebox Area (sq ft / m2)45 / 4.18
Grate Area (sq ft / m2)9 / 0.84
Evaporative Heating Surface (sq ft / m2)552 / 51.30
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)552 / 51.30
Evaporative Heating Surface/Cylinder Volume263.56
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1440
Same as above plus superheater percentage1440
Same as above but substitute firebox area for grate area7200
Power L13265
Power MT514.15

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