Data from DeGolyer, Vol 72, pp. 253. See Locobase 14743 for a history of the Ma-Ao. Works number was 57973 in August 1924.
Especially when set up as a tender engine, this was a very unusual wheel arrangement from an American builder. Sometime after it arrived on the Ma-Ao, the sugar mill deleted the rear truck from this plantation engine, making it an 0-6-0.
Data from DeGolyer, Vol 63, pp. 219. See Locobase 14743 for a history of the Ma-Ao. Works numbers were 53965 and 54071 in November 1920.
Unlike many of the other sugar plantation locomotives delivered to Negros Occidental province in these years, this pair of tanks ( the second was named Bago, for the nearby town) were wood burners. As such they sported Rushton Improved cabbage stacks. They were also bigger and a little more powerful than Baldwin's earlier delivery.
| Principal Dimensions by Steve Llanso of Middle Run Media | ||
|---|---|---|
| Class | 9 | Canlaon |
| Locobase ID | 15282 | 14747 |
| Railroad | Ma-Ao Sugar Central | Ma-Ao Sugar Central |
| Country | Philippines | Philippines |
| Whyte | 0-6-2 | 0-6-2ST |
| Number in Class | 1 | 2 |
| Road Numbers | 9 | 6-7 |
| Gauge | 3' | 3' |
| Number Built | 1 | 2 |
| Builder | Baldwin | Baldwin |
| Year | 1924 | 1920 |
| Valve Gear | Stephenson | Stephenson |
| Locomotive Length and Weight | ||
| Driver Wheelbase (ft / m) | 7 / 2.13 | 7.50 / 2.29 |
| Engine Wheelbase (ft / m) | 15 / 4.57 | 14.58 / 4.44 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.47 | 0.51 |
| Overall Wheelbase (engine & tender) (ft / m) | 37.54 / 11.44 | 14.58 / 4.44 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||
| Weight on Drivers (lbs / kg) | 45,000 / 20,412 | 43,000 / 19,504 |
| Engine Weight (lbs / kg) | 52,000 / 23,587 | 49,000 / 22,226 |
| Tender Loaded Weight (lbs / kg) | 65,000 / 29,484 | |
| Total Engine and Tender Weight (lbs / kg) | 117,000 / 53,071 | 49,000 / 22,226 |
| Tender Water Capacity (gals / ML) | 3000 / 11.36 | 600 / 2.27 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 6 / 6 | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 25 / 12.50 | 24 / 12 |
| Geometry Relating to Tractive Effort | ||
| Driver Diameter (in / mm) | 33 / 838 | 33 / 838 |
| Boiler Pressure (psi / kPa) | 150 / 1030 | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 13" x 18" / 330x457 | 11" x 16" / 279x406 |
| Tractive Effort (lbs / kg) | 11,753 / 5331.08 | 7979 / 3619.22 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.83 | 5.39 |
| Heating Ability | ||
| Tubes (number - dia) (in / mm) | 82 - 2" / 51 | 66 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | ||
| Flue/Tube length (ft / m) | 10 / 3.05 | 11 / 3.35 |
| Firebox Area (sq ft / m2) | 55 / 5.11 | 26 / 2.42 |
| Grate Area (sq ft / m2) | 14.40 / 1.34 | 8.80 / 0.82 |
| Evaporative Heating Surface (sq ft / m2) | 481 / 44.69 | 356 / 33.07 |
| Superheating Surface (sq ft / m2) | ||
| Combined Heating Surface (sq ft / m2) | 481 / 44.69 | 356 / 33.07 |
| Evaporative Heating Surface/Cylinder Volume | 173.94 | 202.29 |
| Computations Relating to Power Output (More Information) | ||
| Robert LeMassena's Power Computation | 2160 | 1408 |
| Same as above plus superheater percentage | 2160 | 1408 |
| Same as above but substitute firebox area for grate area | 8250 | 4160 |
| Power L1 | 2255 | 2430 |
| Power MT | 331.43 | 373.76 |