Polochic Banana Co. 2-6-2 Locomotives in Guatemala
Class Details by Steve Llanso of Sweat House Media
Class 2 (Locobase 4416)
Data from [
], last accessed 21 July 2007. See also DeGolyer, Vol 79, pp. 97+. Works number was 60487 in May 1928.
Wood-burning banana-grove plantation "Prairie" (seems odd to call it that) As with many narrow-gauge agricultural railways, Polochic's #2 had a big Rushton Improved cabbage stack spark-arrestor. The steam dome was flanked by two smaller sand domes. The Polochic line presented 2% grades and 20-degree curves.
Sometime later, #2 was sold to Verapaz Railroad as their Panzós (#4).
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 2 |
| Locobase ID | 4416 |
| Railroad | Polochic Banana Co. |
| Country | Guatemala |
| Whyte | 2-6-2 |
| Number in Class | 1 |
| Road Numbers | 2 |
| Gauge | 3' |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1928 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 7.75 / 2.36 |
| Engine Wheelbase (ft / m) | 20.75 / 6.32 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.37 |
| Overall Wheelbase (engine & tender) (ft / m) | 38.92 / 11.86 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 40,650 / 18,439 |
| Engine Weight (lbs / kg) | 56,850 / 25,787 |
| Tender Loaded Weight (lbs / kg) | 43,000 / 19,504 |
| Total Engine and Tender Weight (lbs / kg) | 99,850 / 45,291 |
| Tender Water Capacity (gals / ML) | 1700 / 6.44 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 23 / 11.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 37 / 940 |
| Boiler Pressure (psi / kPa) | 170 / 1170 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 12" x 18" / 305x457 |
| Tractive Effort (lbs / kg) | 10,123 / 4591.72 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.02 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 81 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 11.50 / 3.51 |
| Firebox Area (sq ft / m2) | 50 / 4.65 |
| Grate Area (sq ft / m2) | 13.20 / 1.23 |
| Evaporative Heating Surface (sq ft / m2) | 534 / 49.61 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 534 / 49.61 |
| Evaporative Heating Surface/Cylinder Volume | 226.64 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2244 |
| Same as above plus superheater percentage | 2244 |
| Same as above but substitute firebox area for grate area | 8500 |
| Power L1 | 3488 |
| Power MT | 567.51 |