This sugar mill was based at Humacao, which is located on the east coast about 60 km (37.3 miles) southeast of San Juan. Founded in 1904, the CPV struggled mightily until a "group of determined capitalists" founded the Federal Syndicate of Humacao in 1914. They operated the Central for a year while it stood in receivership, then bought the mill outright and reorganized as the Central Pasto Viejo Incorporated.
The Central's presence in Humacao was unavoidable, according to the Humacao history, as the smoke from its stacks (and those of El Ejemplo) "blanketed and obscured the area, reminiscent of the city of Pittsburgh" [Locobase translation]. It was in those years that the town acquired its nickname "the Grey City".
The CPV's railway was laid on 40 lb/yard (20 kg/metre) rail. Its tightest curve radii of 131 feet (40 metres) combined with 2% and 3% curves with a maximum grade of 3 1/2% combined with a curve radius of 164 feet (50 metres).
Before delivery, Extra Order 1925-1928 (15 September 1928) dictated a 9 3/8" widening in the gauge. New tires measured 2 1/2" (63.5 mm) thick by 5" (127 mm) wide on the front and rear driver sets, which were flanged, and 2 1/2" x 5 1/2" on the intermediate sets (axle #3 was the driven one), which were plain (or "blind").
|Specifications by Steve Llanso of Sweat House Media|
|Railroad||Central Pasto Viejo|
|Number in Class||2|
|Locomotive Length and Weight|
|Ratio of driving wheelbase to overall engine wheebase||0.62|
|Overall Wheelbase (engine & tender)||38.85'|
|Axle Loading (Maximum Weight per Axle)|
|Weight on Drivers||60000 lbs|
|Engine Weight||67500 lbs|
|Tender Light Weight||39000 lbs|
|Total Engine and Tender Weight||106500 lbs|
|Tender Water Capacity||1800 gals|
|Tender Fuel Capacity (oil/coal)||3 tons|
|Minimum weight of rail (calculated)||25 lb/yard|
|Geometry Relating to Tractive Effort|
|Boiler Pressure||170 psi|
|Cylinders (dia x stroke)||14" x 18"|
|Tractive Effort||14161 lbs|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||4.24|
|Firebox Area||51 sq. ft|
|Grate Area||16 sq. ft|
|Evaporative Heating Surface||829 sq. ft|
|Combined Heating Surface||829 sq. ft|
|Evaporative Heating Surface/Cylinder Volume||258.49|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||2720|
|Same as above plus superheater percentage||2720|
|Same as above but substitute firebox area for grate area||8670|