Central Los Ca±os 0-4-2 Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class 1 (Locobase 13336)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 32, p.53. Works number was 33200 in February 1909.

Puerto-Rican sugar-plantation saddle tanker for the Guantanamo Sugar Company's 13 1/2-mile (21.7-km) narrow-gauge line. The specification requires the 1 to haul 12-15 short tons of "cars & lading" up a straight 1/2% grade with frictional resistance not to exceed 15 lb per ton (7.5 kg per tonne) and to control about twice as much train load heading downgrade.


Class 12 (Locobase 15421)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 79. p. 60. Works number was 60195 in September 1927.

Locobase 13336 shows the first of these really small saddle tanks. When the Puerto Rican sugar mill ordered a second locomotive eighteen years later, they went for slightly more of everything: cylinder volume, tubes for more heating surface, and a larger firebox. All this was available for a mere two short tons (1,814 kg). Like the earlier engine, the 12 was challenged by curves with radii as tight as 50 feet (16 metres).

Specifications by Steve Llanso of Sweat House Media
Class112
Locobase ID13336 15421
RailroadCentral Los Ca±osCentral Los Ca±os
CountryUSAUSA
Whyte0-4-2ST0-4-2ST
Number in Class11
Road Numbers112
Gauge66 cm66 cm
Number Built11
BuilderBurnham, Williams & CoBaldwin
Year19091927
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase 3.67' 3.75'
Engine Wheelbase 8.50' 9.58'
Ratio of driving wheelbase to overall engine wheebase 0.43 0.39
Overall Wheelbase (engine & tender) 8.50' 9.58'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers17000 lbs19000 lbs
Engine Weight21000 lbs25000 lbs
Tender Light Weight
Total Engine and Tender Weight21000 lbs25000 lbs
Tender Water Capacity300 gals350 gals
Tender Fuel Capacity (oil/coal)0.5 tons
Minimum weight of rail (calculated)14 lb/yard16 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter24"28"
Boiler Pressure150 psi160 psi
Cylinders (dia x stroke)7" x 12"8" x 12"
Tractive Effort3124 lbs3730 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.44 5.09
Heating Ability
Firebox Area18.60 sq. ft24.40 sq. ft
Grate Area 4.52 sq. ft 6.27 sq. ft
Evaporative Heating Surface130 sq. ft172 sq. ft
Superheating Surface
Combined Heating Surface130 sq. ft172 sq. ft
Evaporative Heating Surface/Cylinder Volume243.21246.37
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation6781003
Same as above plus superheater percentage6781003
Same as above but substitute firebox area for grate area27903904
Power L125033144
Power MT649.20729.61


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