Yucatan 0-4-2 Locomotives in Mexico


Class Details by Steve Llanso of Sweat House Media

Class unknown (Locobase 12678)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 25, p. 266. Works number was 21937 in April 1903.

This little tank operated on the Yucatan Peninsula. It was set up to burn either wood or coal ("mainly wood"). The specs called for the 2 to "haul 30 or 40 tons on the level."

Principal Dimensions by Steve Llanso of Middle Run Media
Classunknown
Locobase ID12678
RailroadYucatan
CountryMexico
Whyte0-4-2T
Number in Class1
Road Numbers2
Gauge60 cm
Number Built1
BuilderBurnham, Williams & Co
Year1903
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 3.67 / 1.12
Engine Wheelbase (ft / m) 8.50 / 2.59
Ratio of driving wheelbase to overall engine wheelbase 0.43
Overall Wheelbase (engine & tender) (ft / m) 8.50 / 2.59
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)12,700 / 5761
Engine Weight (lbs / kg)16,500 / 7484
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)150 / 0.57
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)11 / 5.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)28 / 711
Boiler Pressure (psi / kPa)150 / 1030
High Pressure Cylinders (dia x stroke) (in / mm)7" x 12" / 178x305
Tractive Effort (lbs / kg)2678 / 1214.72
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.74
Heating Ability
Tubes (number - dia) (in / mm)46 - 1.5" / 38
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 6.26 / 1.91
Firebox Area (sq ft / m2)19.50 / 1.81
Grate Area (sq ft / m2) 4.40 / 0.41
Evaporative Heating Surface (sq ft / m2)132 / 12.26
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)132 / 12.26
Evaporative Heating Surface/Cylinder Volume249.06
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation660
Same as above plus superheater percentage660
Same as above but substitute firebox area for grate area2925
Power L13031
Power MT1052.32

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