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).
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 | ||
---|---|---|
Class | 7 | Teresa |
Locobase ID | 13164 | 14430 |
Railroad | Stewart Sugar Company | Soledad Sugar Company |
Country | Cuba | Cuba |
Whyte | 2-8-0 | 2-8-0 |
Number in Class | 2 | 1 |
Road Numbers | 7-8 | 6 |
Gauge | Std | 2'6" |
Number Built | 2 | 1 |
Builder | Baldwin | Baldwin |
Year | 1912 | 1915 |
Valve Gear | Stephenson | Walschaert |
Locomotive Length and Weight | ||
Driver Wheelbase (ft / m) | 12.17 / 3.71 | 9.83 / 3 |
Engine Wheelbase (ft / m) | 19.65 / 5.99 | 17.17 / 5.23 |
Ratio of driving wheelbase to overall engine wheelbase | 0.62 | 0.57 |
Overall Wheelbase (engine & tender) (ft / m) | 48.83 / 14.88 | 33.92 / 13.31 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||
Weight on Drivers (lbs / kg) | 99,700 / 45,223 | 64,000 / 29,030 |
Engine Weight (lbs / kg) | 111,850 / 50,734 | 72,000 / 32,659 |
Tender Loaded Weight (lbs / kg) | 120,000 / 54,431 | 27,500 / 36,287 |
Total Engine and Tender Weight (lbs / kg) | 231,850 / 105,165 | 99,500 / 68,946 |
Tender Water Capacity (gals / ML) | 6000 / 22.73 | 1200 / 15.15 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2.50 / 5 | |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 42 / 21 | 27 / 13.50 |
Geometry Relating to Tractive Effort | ||
Driver Diameter (in / mm) | 42 / 1067 | 36 / 914 |
Boiler Pressure (psi / kPa) | 180 / 1240 | 160 / 1100 |
High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 22" / 457x559 | 14" x 20" / 356x508 |
Tractive Effort (lbs / kg) | 25,966 / 11777.99 | 14,809 / 6717.26 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.84 | 4.32 |
Heating Ability | ||
Tubes (number - dia) (in / mm) | 200 - 2" / 51 | 86 - 1.75" / 44 |
Flues (number - dia) (in / mm) | 12 - 5" / 127 | |
Flue/Tube length (ft / m) | 12 / 3.66 | 13.92 / 4.24 |
Firebox Area (sq ft / m2) | 126 / 11.71 | 58 / 5.39 |
Grate Area (sq ft / m2) | 22.20 / 2.06 | 11 / 1.02 |
Evaporative Heating Surface (sq ft / m2) | 1374 / 127.70 | 823 / 76.46 |
Superheating Surface (sq ft / m2) | 183 / 17 | |
Combined Heating Surface (sq ft / m2) | 1374 / 127.70 | 1006 / 93.46 |
Evaporative Heating Surface/Cylinder Volume | 212.05 | 230.96 |
Computations Relating to Power Output (More Information) | ||
Robert LeMassena's Power Computation | 3996 | 1760 |
Same as above plus superheater percentage | 3996 | 2077 |
Same as above but substitute firebox area for grate area | 22,680 | 10,950 |
Power L1 | 3897 | 7436 |
Power MT | 344.69 | 1024.60 |