Ma-Ao Sugar Central 0-6-2 Locomotives in Philippines


Class Details by Steve Llanso of Sweat House Media

Class 9 (Locobase 15282)

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.


Class Canlaon (Locobase 14747)

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 Sweat House Media

Class9Canlaon
Locobase ID15282 14747
RailroadMa-Ao Sugar CentralMa-Ao Sugar Central
CountryPhilippinesPhilippines
Whyte0-6-20-6-2ST
Number in Class12
Road Numbers96-7
Gauge3'3'
Number Built12
BuilderBaldwinBaldwin
Year19241920
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)7 / 2.13 7.50 / 2.29
Engine Wheelbase (ft / m)15 / 4.5714.58 / 4.44
Ratio of driving wheelbase to overall engine wheelbase 0.47 0.51
Overall Wheelbase (engine & tender) (ft / m)37.54 / 11.4414.58 / 4.44
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)45,000 / 20,41243,000 / 19,504
Engine Weight (lbs / kg)52,000 / 23,58749,000 / 22,226
Tender Loaded Weight (lbs / kg)65,000 / 29,484
Total Engine and Tender Weight (lbs / kg)117,000 / 53,07149,000 / 22,226
Tender Water Capacity (gals / ML)3000 / 11.36600 / 2.27
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)6 / 6
Minimum weight of rail (calculated) (lb/yd / kg/m)25 / 12.5024 / 12
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)33 / 83833 / 838
Boiler Pressure (psi / kPa)150 / 10.30160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)13" x 18" / 330x45711" x 16" / 279x406
Tractive Effort (lbs / kg)11,753 / 5331.087979 / 3619.22
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.83 5.39
Heating Ability
Tubes (number - dia) (in / mm)82 - 2" / 5166 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)10 / 3.0511 / 3.35
Firebox Area (sq ft / m2)55 / 5.1126 / 2.42
Grate Area (sq ft / m2)14.40 / 1.34 8.80 / 0.82
Evaporative Heating Surface (sq ft / m2)481 / 44.69356 / 33.07
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)481 / 44.69356 / 33.07
Evaporative Heating Surface/Cylinder Volume173.94202.29
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation21601408
Same as above plus superheater percentage21601408
Same as above but substitute firebox area for grate area82504160
Power L122552430
Power MT331.43373.76

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