Data from Baldwin negative 6193 as reproduced on narrowmind.railfan.net. See also DeGolyer, Volume 54, pp. 142. Works number was 44693 in December 1916.
This Prairie Mallet worked the sugar-cane plantations of Cuba. Given its size and the use of soft coal as a fuel, it likely that #18 hauled long trains of cane from the plantation to processing plants or to the docks. All four cylinders were supplied through slide valves.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 18 |
| Locobase ID | 4431 |
| Railroad | Manati Sugar Company |
| Country | Cuba |
| Whyte | 2-6-6-2 |
| Number in Class | 1 |
| Road Numbers | 18 |
| Gauge | 3' |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1917 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 7.83 / 2.39 |
| Engine Wheelbase (ft / m) | 22.83 / 6.96 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.34 |
| Overall Wheelbase (engine & tender) (ft / m) | 33.25 / 10.13 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 123,900 / 56,200 |
| Engine Weight (lbs / kg) | 140,300 / 63,639 |
| Tender Loaded Weight (lbs / kg) | 59,700 / 27,079 |
| Total Engine and Tender Weight (lbs / kg) | 200,000 / 90,718 |
| Tender Water Capacity (gals / ML) | 3500 / 13.26 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 6 / 6 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 34 / 17 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 41 / 1041 |
| Boiler Pressure (psi / kPa) | 204.50 / 1410 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 14.5" x 20" / 368x508 |
| Low Pressure Cylinders (dia x stroke) (in / mm) | 22" x 20" / 559x508 |
| Tractive Effort (lbs / kg) | 24,857 / 11274.96 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.98 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 150 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 17 / 5.18 |
| Firebox Area (sq ft / m2) | 86 / 7.99 |
| Grate Area (sq ft / m2) | 23.80 / 2.21 |
| Evaporative Heating Surface (sq ft / m2) | 1415 / 131.51 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1415 / 131.51 |
| Evaporative Heating Surface/Cylinder Volume | 370.18 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 4867 |
| Same as above plus superheater percentage | 4867 |
| Same as above but substitute firebox area for grate area | 17,587 |
| Power L1 | 2930 |
| Power MT | 312.81 |