Data from "New Locomotives, Manila Railway", The Locomotive Magazine, Vol XV (15 May 1909), pp. 95. See also "Manila Railway 100 Class" in Wikipedia at [], last accessed 28 September 2025. See also []. Works numbers were 17410-17414 in 1906.
During their brief heyday as the premier passenger locomotives, Atlantics turned up everywhere. General Manager Horace L Higgins ordered the quintet from Glasgow, intending them to haul the Baguio Special, "an express service between Manila and Baguio via Damortis station in Rosario, La Union."
So prestigious was their duty, notes Wikipedia, the locomotive's image appeared at the top of a 1906 limited 4-percent Bond; its cab showed the wrong road number. The Philippine 4-4-2s trailed their fuel supplies in tender, the first locomotives to do so in the archipelago.
When more powerful locomotives arrived in the early 1920s, the 100s were relegated to hauling sugar-cane trains.
See Locobase 20260 to see Higgins's Class 37/D Ten-wheeler variant.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 101 |
| Locobase ID | 10708 |
| Railroad | Manila Railroad |
| Country | Philippines |
| Whyte | 4-4-2 |
| Number in Class | 5 |
| Road Numbers | 101-105 |
| Gauge | 3'6" |
| Number Built | 5 |
| Builder | North British |
| Year | 1909 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 12 / 3.66 |
| Engine Wheelbase (ft / m) | 21.17 / 6.45 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.57 |
| Overall Wheelbase (engine & tender) (ft / m) | 43.54 / 13.27 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 47,712 / 21,642 |
| Engine Weight (lbs / kg) | 91,392 / 41,455 |
| Tender Loaded Weight (lbs / kg) | 71,680 / 32,514 |
| Total Engine and Tender Weight (lbs / kg) | 163,072 / 73,969 |
| Tender Water Capacity (gals / ML) | 3000 / 11.36 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 40 / 20 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 60 / 1524 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 24" / 406x610 |
| Tractive Effort (lbs / kg) | 15,667 / 7106.44 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.05 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 107 / 9.94 |
| Grate Area (sq ft / m2) | 16.50 / 1.53 |
| Evaporative Heating Surface (sq ft / m2) | 1080 / 100.37 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1080 / 100.37 |
| Evaporative Heating Surface/Cylinder Volume | 193.37 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2970 |
| Same as above plus superheater percentage | 2970 |
| Same as above but substitute firebox area for grate area | 19,260 |
| Power L1 | 5205 |
| Power MT | 481.01 |