Cazadero La Torre y Tepetongo 2-6-2 Locomotives in Mexico


Class Details by Steve Llanso of Sweat House Media

Class 3 (Locobase 12193)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 20, 126. Works numbers were 14798-14799 in April 1896 and 14976, 14992 in August

How tight were the clearances on this very narrow gauge railroad. Well, in addition to the requirement that one of these saddle-tanks pull 100 tons gross of cars and lading up a 1 1/2% grade at 5 mph, the engines must also be able to round 25-metre (82-ft) radius curves.

In 1906, the 60-km (37.3 mi) railway was reorganized as the Cazadero y Solis. In 1921, 4-5 locomotives operated on the Cazadero y San Pablo. After 25 more years of service, the C & SP sold the pair to Ingenio San Francisco El Naranjal, a sugar-refiner near VeraCruz.

At some point, 6 went to work for Compania La Primavera as their #1 and remained until it was retired in 1947.

Principal Dimensions by Steve Llanso of Sweat House Media

Class3
Locobase ID12193
RailroadCazadero La Torre y Tepetongo
CountryMexico
Whyte2-6-2ST
Number in Class4
Road Numbers3-6
Gauge2'
Number Built4
BuilderBurnham, Williams & Co
Year1896
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 7.50 / 2.29
Engine Wheelbase (ft / m)19.83 / 6.04
Ratio of driving wheelbase to overall engine wheelbase 0.38
Overall Wheelbase (engine & tender) (ft / m)19.83 / 6.04
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)32,000 / 14,515
Engine Weight (lbs / kg)46,000 / 20,865
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)46,000
Tender Water Capacity (gals / ML)550 / 2.08
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)18 / 9
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)33 / 838
Boiler Pressure (psi / kPa)150 / 10.30
High Pressure Cylinders (dia x stroke) (in / mm)11" x 16" / 279x406
Tractive Effort (lbs / kg)7480 / 3392.87
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.28
Heating Ability
Tubes (number - dia) (in / mm)62 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)10.92 / 3.33
Firebox Area (sq ft / m2)39.98 / 3.72
Grate Area (sq ft / m2) 7.90 / 0.73
Evaporative Heating Surface (sq ft / m2)392 / 36.43
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)392 / 36.43
Evaporative Heating Surface/Cylinder Volume222.73
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1185
Same as above plus superheater percentage1185
Same as above but substitute firebox area for grate area5997
Power L12775
Power MT573.55

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