Soledad Sugar Company / Stewart Sugar Company 2-8-0 Locomotives in Cuba


Class Details by Steve Llanso of Sweat House Media

Class 7 (Locobase 13164)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 44, p. 288. Works numbers were 38095-38096 in August 1912.

Of the first nine locomotives bought by the Cuba-based Stewart Sugar Co, 7 were small Moguls. For more onerous duties, the company bought a pair of Consolidations. Neither were very big. A July 1912 reports that a "mistake" led to the tubes projecting through the smoke box tube sheet a uniform 1/4" (6.35 mm). That was a little too little margin of error, apparently, as the note says that "Hereafter" that distance should be 1/2" (12.7 mm).


Class Teresa (Locobase 14430)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 54, p. 152. Works number was 42093 in May 1915.

One "Hereafter" note in the specifications noted that the springs were to be made heavier. Locobase has never seen an instruction in a plantation order that required the springs to be made lighter. The profile certainly suggested arduous duty: curve radii as tight as 200 feet (61 metres), 2% against the load and 3.65% with the load, and rail weights between 30 and 45 lb/yard (15-22.5 kg/metre).

Principal Dimensions by Steve Llanso of Middle Run Media
Class7Teresa
Locobase ID13164 14430
RailroadStewart Sugar CompanySoledad Sugar Company
CountryCubaCuba
Whyte2-8-02-8-0
Number in Class21
Road Numbers7-86
GaugeStd2'6"
Number Built21
BuilderBaldwinBaldwin
Year19121915
Valve GearStephensonWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)12.17 / 3.71 9.83 / 3
Engine Wheelbase (ft / m)19.65 / 5.9917.17 / 5.23
Ratio of driving wheelbase to overall engine wheelbase 0.62 0.57
Overall Wheelbase (engine & tender) (ft / m)48.83 / 14.8833.92 / 13.31
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)99,700 / 45,22364,000 / 29,030
Engine Weight (lbs / kg)111,850 / 50,73472,000 / 32,659
Tender Loaded Weight (lbs / kg)120,000 / 54,43127,500 / 36,287
Total Engine and Tender Weight (lbs / kg)231,850 / 105,16599,500 / 68,946
Tender Water Capacity (gals / ML)6000 / 22.731200 / 15.15
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 2.50 / 5
Minimum weight of rail (calculated) (lb/yd / kg/m)42 / 2127 / 13.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)42 / 106736 / 914
Boiler Pressure (psi / kPa)180 / 1240160 / 1100
High Pressure Cylinders (dia x stroke) (in / mm)18" x 22" / 457x55914" x 20" / 356x508
Tractive Effort (lbs / kg)25,966 / 11777.9914,809 / 6717.26
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.84 4.32
Heating Ability
Tubes (number - dia) (in / mm)200 - 2" / 5186 - 1.75" / 44
Flues (number - dia) (in / mm)12 - 5" / 127
Flue/Tube length (ft / m)12 / 3.6613.92 / 4.24
Firebox Area (sq ft / m2)126 / 11.7158 / 5.39
Grate Area (sq ft / m2)22.20 / 2.0611 / 1.02
Evaporative Heating Surface (sq ft / m2)1374 / 127.70823 / 76.46
Superheating Surface (sq ft / m2)183 / 17
Combined Heating Surface (sq ft / m2)1374 / 127.701006 / 93.46
Evaporative Heating Surface/Cylinder Volume212.05230.96
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation39961760
Same as above plus superheater percentage39962077
Same as above but substitute firebox area for grate area22,68010,950
Power L138977436
Power MT344.691024.60

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