Cundinamarca 4-8-2 Locomotives in Colombia


Class Details by Steve Llanso of Sweat House Media

Class 28 (Locobase 13998)

Data from a table in 1947 Locomotive Cyclopedia, considerably supplemented by Negative 13435 of the Baldwin Locomotive Works, supplied by Bryan Norden to [link],194903,194951#msg-194951 on 15 July 2011, last accessed 26 March 2012. Works numbers were 70334-70335 in 1944, 72242-72243 in 1945, and 73355-73358 in 1946.

In the 1940s, the Girardot, the Pacifico, and the Cundinamarca each ordered a medium-size Mountain of identical specifications to operate on the 3-foot gauge. Not many 4-8-2s on either the Metre or Cape gauges were bigger.

Principal Dimensions by Steve Llanso of Middle Run Media
Class28
Locobase ID13998
RailroadCundinamarca
CountryColombia
Whyte4-8-2
Number in Class4
Road Numbers28-29, 26-27
Gauge3'
Number Built4
BuilderBaldwin
Year1944
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)11.50 / 3.51
Engine Wheelbase (ft / m)29.25 / 8.92
Ratio of driving wheelbase to overall engine wheelbase 0.39
Overall Wheelbase (engine & tender) (ft / m)55.08 / 16.79
Axle Loading (Maximum Weight per Axle) (lbs / kg)30,500 / 13,835
Weight on Drivers (lbs / kg)122,000 / 55,338
Engine Weight (lbs / kg)179,000 / 81,193
Tender Loaded Weight (lbs / kg)84,000 / 38,102
Total Engine and Tender Weight (lbs / kg)263,000 / 119,295
Tender Water Capacity (gals / ML)4000 / 15.15
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)1500 / 5678
Minimum weight of rail (calculated) (lb/yd / kg/m)51 / 25.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)42 / 1067
Boiler Pressure (psi / kPa)210 / 1450
High Pressure Cylinders (dia x stroke) (in / mm)18.5" x 22" / 470x559
Tractive Effort (lbs / kg)32,000 / 14514.97
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.81
Heating Ability
Tubes (number - dia) (in / mm)171 - 2" / 51
Flues (number - dia) (in / mm)34 - 5.125" / 130
Flue/Tube length (ft / m)17 / 5.18
Firebox Area (sq ft / m2)157 / 14.59
Grate Area (sq ft / m2)48 / 4.46
Evaporative Heating Surface (sq ft / m2)2477 / 230.20
Superheating Surface (sq ft / m2)685 / 63.66
Combined Heating Surface (sq ft / m2)3162 / 293.86
Evaporative Heating Surface/Cylinder Volume361.90
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation10,080
Same as above plus superheater percentage12,298
Same as above but substitute firebox area for grate area40,223
Power L120,246
Power MT1463.43

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