Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 79, p. 271+. See also the blog entry at "Usinas de Pernambuco--Jaboatpo dos Guararapes", 17 noviembre 2012[], last accessed 20 September 2013. Works number was 60839 in May 1929.
Directed toward plantation service, the 4 was a bi-fuel (wood or coal) saddle tank that rolled on the sugar mill's 15 kg/metre (30 ft/yard) rail up 2 1/2% grades that were combined with curve radii of 70 metres.
The mill was located in the town of Jaboatpo dos Guararapes in Pernambuco State, a little more than 20 km (12.4 miles from the port of Recife. At the time when this saddle tank arrived, the Usina's railway covered 27 km (16.75 miles) and operated four locomotives and 44 8-10 tonne (8.8-11 ton) sugar cars. The mill could process 400 tonnes (440 tons) of sugar cane or 3,000 litres (793 US gallons) of alcohol every 24 hours.
Principal Dimensions by Steve Llanso of Middle Run Media | |
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Class | 4 |
Locobase ID | 15446 |
Railroad | Usina Bulh)es |
Country | Brazil |
Whyte | 0-6-2ST |
Number in Class | 1 |
Road Numbers | 4 |
Gauge | 75 cm |
Number Built | 1 |
Builder | Baldwin |
Year | 1929 |
Valve Gear | Walschaert |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 6.83 / 2.08 |
Engine Wheelbase (ft / m) | 13.08 / 3.99 |
Ratio of driving wheelbase to overall engine wheelbase | 0.52 |
Overall Wheelbase (engine & tender) (ft / m) | 13.08 / 3.99 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | 29,000 / 13,154 |
Engine Weight (lbs / kg) | 35,100 / 15,921 |
Tender Loaded Weight (lbs / kg) | |
Total Engine and Tender Weight (lbs / kg) | |
Tender Water Capacity (gals / ML) | 250 / 0.95 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 16 / 8 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 33 / 838 |
Boiler Pressure (psi / kPa) | 180 / 1240 |
High Pressure Cylinders (dia x stroke) (in / mm) | 9" x 16" / 229x406 |
Tractive Effort (lbs / kg) | 6009 / 2725.64 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.83 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 56 - 1.75" / 44 |
Flues (number - dia) (in / mm) | 1 - 2.25" / 57 |
Flue/Tube length (ft / m) | 9.50 / 2.90 |
Firebox Area (sq ft / m2) | 31 / 2.88 |
Grate Area (sq ft / m2) | 7.10 / 0.66 |
Evaporative Heating Surface (sq ft / m2) | 279 / 25.92 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 279 / 25.92 |
Evaporative Heating Surface/Cylinder Volume | 236.82 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 1278 |
Same as above plus superheater percentage | 1278 |
Same as above but substitute firebox area for grate area | 5580 |
Power L1 | 3647 |
Power MT | 831.75 |