Central Natividad 0-4-2 Locomotives in Cuba


Class Details by Steve Llanso of Sweat House Media

Class 1 (Locobase 14833)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 64, p. 71. Works numbers were 53276 in June 1920 and 56035 in January 1921.

These oil-burning plantation tanks served a small sugar Central located in Sancti Spiritu Province. The railway used 56 lb/yard (28 kg/metre) rail and offered only 0.5-1% grades. Minimum curve radii were a tight 51.8 metres (170 feet). The little truck under the fire box swung a full 5" (127 mm) to each side.


Class 3 (Locobase 14834)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 64, p. 76, Vol 72, p 13, and Vol 78, p. 38. Works numbers were 57094 in September 1923, 58003 in September 1924, 58240 in February 1925 and 58331 in March.

Still constrained by the small volume of sugar production and the tight alignments of this Sancti Spiritu central, the Natividad bought a third radial tank that had slightly larger dimensions than the two oil-burners shown in Locobase 14833, but burned wood. The change in fuel prompted a change to the Rushton Improved cabbage stack. The combination apparently suited because the company went back to Eddystone for a duplicate a year later and bought two more within six months of that purchase.

Principal Dimensions by Steve Llanso of Middle Run Media
Class13
Locobase ID14833 14834
RailroadCentral NatividadCentral Natividad
CountryCubaCuba
Whyte0-4-2T0-4-2T
Number in Class24
Road Numbers1-23-6
Gauge3'3'
Number Built24
BuilderBaldwinBaldwin
Year19201923
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)4 / 1.22 4.50 / 1.37
Engine Wheelbase (ft / m)10.33 / 3.1511 / 3.35
Ratio of driving wheelbase to overall engine wheelbase 0.39 0.41
Overall Wheelbase (engine & tender) (ft / m)10.33 / 3.1511 / 3.35
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)27,000 / 12,24734,500 / 15,649
Engine Weight (lbs / kg)32,000 / 14,51539,500 / 17,917
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)500 / 1.89450 / 1.70
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)250 / 946
Minimum weight of rail (calculated) (lb/yd / kg/m)23 / 11.5029 / 14.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)30 / 76233 / 838
Boiler Pressure (psi / kPa)160 / 1100160 / 1100
High Pressure Cylinders (dia x stroke) (in / mm)9" x 14" / 229x35610" x 16" / 254x406
Tractive Effort (lbs / kg)5141 / 2331.926594 / 2990.99
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.25 5.23
Heating Ability
Tubes (number - dia) (in / mm)74 - 1.5" / 3883 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 6.71 / 2.05 7.67 / 2.34
Firebox Area (sq ft / m2)32 / 2.9735 / 3.25
Grate Area (sq ft / m2) 8.20 / 0.76 7.05 / 0.65
Evaporative Heating Surface (sq ft / m2)225 / 20.91323 / 30.01
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)225 / 20.91323 / 30.01
Evaporative Heating Surface/Cylinder Volume218.27222.08
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation13121128
Same as above plus superheater percentage13121128
Same as above but substitute firebox area for grate area51205600
Power L129883013
Power MT487.96385.07

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