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 | |
|---|---|
| Class | 20 |
| Locobase ID | 15061 |
| Railroad | Truxillo |
| Country | Honduras |
| Whyte | 2-6-0 |
| Number in Class | 4 |
| Road Numbers | 20-23 |
| Gauge | 3'6" |
| Number Built | 4 |
| Builder | Baldwin |
| Year | 1923 |
| Valve Gear | Stephenson |
| 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 / 1170 |
| 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 Volume | 191.66 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2363 |
| Same as above plus superheater percentage | 2363 |
| Same as above but substitute firebox area for grate area | 14,280 |
| Power L1 | 3503 |
| Power MT | 373.68 |