Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 60, pp. 412. Works numbers were 53484-53485 in July 1920 and 53523, 53534-53535 in August.
Identical to the Dah Sing engine shown in Locobase 14620, this quintet ran a slightly larger gauge for the Sumatran projects of the world-wide Royal Netherlands Harbor Works company. NMVH was formed in 1900-1910 to improve Chinese harbors by consolidating contracting firms such as S. ten Bockel Huinink, J. Korthals Altes, and G. van Thiel.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | unknown |
| Locobase ID | 14666 |
| Railroad | Nederlandsche Maatschappij Voor Havenwerken |
| Country | Sumatra (NEI) |
| Whyte | 0-4-0ST |
| Number in Class | 5 |
| Road Numbers | |
| Gauge | 70 cm |
| Number Built | 5 |
| Builder | Baldwin |
| Year | 1920 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 3.33 / 1.01 |
| Engine Wheelbase (ft / m) | 3.33 / 1.01 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | 3.33 / 1.01 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 13,500 / 6124 |
| Engine Weight (lbs / kg) | 13,500 / 6124 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 13,500 / 6124 |
| Tender Water Capacity (gals / ML) | 150 / 0.57 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 11 / 5.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 20 / 508 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 6" x 10" / 152x254 |
| Tractive Effort (lbs / kg) | 2448 / 1110.40 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.51 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 46 - 1.5" / 38 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 6 / 1.83 |
| Firebox Area (sq ft / m2) | 17 / 1.58 |
| Grate Area (sq ft / m2) | 3.90 / 0.36 |
| Evaporative Heating Surface (sq ft / m2) | 124 / 11.52 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 124 / 11.52 |
| Evaporative Heating Surface/Cylinder Volume | 378.92 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 624 |
| Same as above plus superheater percentage | 624 |
| Same as above but substitute firebox area for grate area | 2720 |
| Power L1 | 3406 |
| Power MT | 1112.43 |