Spanish-American Iron 2-6-2 Locomotives in Cuba

Class Details by Steve Llanso of Sweat House Media

Class 9 (Locobase 9758)

Data from Angus Sinclair, Railway and Locomotive Engineering, May 1902, p. 202; and DeGolyer, Volume 24, p. 224 and Volume 30, p. 199. Works numbers were 20221 in March 1902 and 30374 in March 1907.

Prairie locomotives fitted with tenders didn't usually act as freight haulers. This engine was an exception as it served the Mayari District iron mines located on Cuba's north coast and owned by Bethlehem Steel. Baldwin sold mostly all-adhesion switchers to this mining company (see Locobase 20918 for the five 0-6-0s) but occasionally persuaded them to adds some truck.

These two engines were essentially identical, but five years apart in arriving. A note in the latter specs addressed a balance issue: "Move back eq[ualizer] beam fulcrum so as to take weight off rear tr[uc]k & transfer it to rear drivers, making w[eigh]t on rear truck 10,790 lb [4,894 kg] [and] making back driver spr[in]gs proportionately stronger."

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID9758
RailroadSpanish-American Iron
Number in Class2
Road Numbers9, 22
Number Built2
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)11 / 3.35
Engine Wheelbase (ft / m)26.58 / 8.10
Ratio of driving wheelbase to overall engine wheelbase 0.41
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)81,640 / 37,031
Engine Weight (lbs / kg)111,240 / 50,458
Tender Loaded Weight (lbs / kg)61,760 / 28,014
Total Engine and Tender Weight (lbs / kg)173,000 / 78,472
Tender Water Capacity (gals / ML)3000 / 11.36
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)45 / 22.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)50 / 1270
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x610
Tractive Effort (lbs / kg)21,151 / 9593.94
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.86
Heating Ability
Tubes (number - dia) (in / mm)200 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)12.50 / 3.81
Firebox Area (sq ft / m2)122 / 11.34
Grate Area (sq ft / m2)21 / 1.95
Evaporative Heating Surface (sq ft / m2)1422 / 132.16
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1422 / 132.16
Evaporative Heating Surface/Cylinder Volume201.17
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3360
Same as above plus superheater percentage3360
Same as above but substitute firebox area for grate area19,520
Power L13833
Power MT310.52

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