Tatetla 2-6-0 Locomotives in Mexico


Class Details by Steve Llanso of Sweat House Media

Class Rosa (Locobase 13644)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 25, p. 238. Works number was 21823 in March 1903.

A tiny plantation Mogul for this very skinny gauge railroad, which opened in 1905 and closed in 1955.

Principal Dimensions by Steve Llanso of Middle Run Media

ClassRosa
Locobase ID13644
RailroadTatetla
CountryMexico
Whyte2-6-0
Number in Class1
Road Numbers1
Gauge60 cm
Number Built1
BuilderBaldwin
Year1910
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 9.83 / 3
Engine Wheelbase (ft / m)14.58 / 4.44
Ratio of driving wheelbase to overall engine wheelbase 0.67
Overall Wheelbase (engine & tender) (ft / m)29.83 / 9.58
Axle Loading (Maximum Weight per Axle) (lbs / kg)7000 / 3175
Weight on Drivers (lbs / kg)21,000 / 9525
Engine Weight (lbs / kg)24,000 / 10,886
Tender Loaded Weight (lbs / kg)25,000 / 11,340
Total Engine and Tender Weight (lbs / kg)49,000 / 22,226
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)12 / 6
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)28 / 711
Boiler Pressure (psi / kPa)150 / 10.30
High Pressure Cylinders (dia x stroke) (in / mm)9" x 14" / 229x356
Tractive Effort (lbs / kg)5164 / 2342.35
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.07
Heating Ability
Tubes (number - dia) (in / mm)82 - 1.5" / 38
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 6.67 / 2.03
Firebox Area (sq ft / m2)41 / 3.81
Grate Area (sq ft / m2) 8.34 / 0.77
Evaporative Heating Surface (sq ft / m2)253 / 23.50
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)253 / 23.50
Evaporative Heating Surface/Cylinder Volume245.63
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1251
Same as above plus superheater percentage1251
Same as above but substitute firebox area for grate area6150
Power L13113
Power MT980.43

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