Truxillo 2-6-0 Locomotives in Honduras


Class Details by Steve Llanso of Sweat House Media

Class 20 (Locobase 15061)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 66, p. 67. Works number was 56332-56335 in March 1923.

In the same month as Eddystone turned out an Eight-wheeler for this banana railway, it produced four oil-burning Moguls with smaller drivers, lower boiler pressure, a few more tubes, and a shorter wheelbase. Tractive effort rose by about 1/3 while the adhesion weight increased by about 25%.

See notes in Locobase 15060 on desired changes for both designs.

Principal Dimensions by Steve Llanso of Middle Run Media

Class20
Locobase ID15061
RailroadTruxillo
CountryHonduras
Whyte2-6-0
Number in Class4
Road Numbers20-23
Gauge3'6"
Number Built4
BuilderBaldwin
Year1923
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)10 / 3.05
Engine Wheelbase (ft / m)16.83 / 5.13
Ratio of driving wheelbase to overall engine wheelbase 0.59
Overall Wheelbase (engine & tender) (ft / m)41.54 / 12.66
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)62,000 / 28,123
Engine Weight (lbs / kg)72,000 / 32,659
Tender Loaded Weight (lbs / kg)65,900 / 29,892
Total Engine and Tender Weight (lbs / kg)137,900 / 62,551
Tender Water Capacity (gals / ML)3000 / 11.36
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)1500 / 5678
Minimum weight of rail (calculated) (lb/yd / kg/m)34 / 17
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)42 / 1067
Boiler Pressure (psi / kPa)170 / 11.70
High Pressure Cylinders (dia x stroke) (in / mm)15" x 20" / 381x508
Tractive Effort (lbs / kg)15,482 / 7022.53
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.00
Heating Ability
Tubes (number - dia) (in / mm)150 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)9 / 2.74
Firebox Area (sq ft / m2)84 / 7.81
Grate Area (sq ft / m2)13.90 / 1.29
Evaporative Heating Surface (sq ft / m2)784 / 72.86
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)784 / 72.86
Evaporative Heating Surface/Cylinder Volume191.66
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2363
Same as above plus superheater percentage2363
Same as above but substitute firebox area for grate area14,280
Power L13503
Power MT373.68

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