High-boilered simple-expansion Prairie articulateds shown on narrowmind.railfan.net. See also Rob Dickinson, "The EF Dona Tereza Cristina" on the International Steam website at [], last accessed 28 February 2023. Works numbers were 72217-72219 in 1945, 74646-74647 in 1949, and 74786-74787 in 1950.
Firebox heating surface includes 46 sq ft (4.27 sq m) in the combustion chamber and 22 sq ft (2.04 sq m) of firebrick tubes. Dickinson's report described this decade of light articulateds as "maginificent." He noted that seven of this e class--the "last Mallets to built for service in Brazil".-- went to the Rede de Viatpo Paraná-Santa Catarina. This entry shows the three put into service with the E de F DTC. " They were clearly well liked at Tubarao", Dickinson wrote, "as four more arrived in 1950, no's. 203-206 ...In their later years at least the seven Mallets worked mainly on the difficult Tubarpo - Lauro Mnller section and may well have been bought specifically to operate it." By the 1970s, only three remained in service and their operation was severely curtailed in 1974, Dickinson wrote, "when the region was devastated by torrential rains, some of the worst ever recorded in Brazil. In Tubarpo 199 people lost their lives and around 45,000 were made homeless." The DTC "suffered enormous damage" including the Passagem bridge on the main line at Tubarpo . Much of the the Lauro Mnller branch line was "swept away in many places."
Principal Dimensions by Steve Llanso of Sweat House Media | |
---|---|
Class | 200 |
Locobase ID | 4433 |
Railroad | Donna Tereza Cristina |
Country | Brazil |
Whyte | 2-6-6-2 |
Number in Class | 7 |
Road Numbers | 200-206 |
Gauge | metre |
Number Built | 7 |
Builder | Baldwin |
Year | 1945 |
Valve Gear | Walschaert |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 7.67 / 2.34 |
Engine Wheelbase (ft / m) | 38.17 / 11.63 |
Ratio of driving wheelbase to overall engine wheelbase | 0.20 |
Overall Wheelbase (engine & tender) (ft / m) | 63.80 / 19.45 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | 133,264 / 60,448 |
Engine Weight (lbs / kg) | 154,150 / 69,921 |
Tender Loaded Weight (lbs / kg) | 80,326 / 36,435 |
Total Engine and Tender Weight (lbs / kg) | 234,476 / 106,356 |
Tender Water Capacity (gals / ML) | 3700 / 14.02 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 6 / 6 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 37 / 18.50 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 43 / 1092 |
Boiler Pressure (psi / kPa) | 162.40 / 11.20 |
High Pressure Cylinders (dia x stroke) (in / mm) | 14" x 22" / 356x560 (4) |
Tractive Effort (lbs / kg) | 27,685 / 12557.72 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.81 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 87 - 2" / 51 |
Flues (number - dia) (in / mm) | 18 - 5.5" / 140 |
Flue/Tube length (ft / m) | 18 / 5.49 |
Firebox Area (sq ft / m2) | 178 / 16.54 |
Grate Area (sq ft / m2) | 47 / 4.37 |
Evaporative Heating Surface (sq ft / m2) | 1453 / 135.04 |
Superheating Surface (sq ft / m2) | 378 / 35.13 |
Combined Heating Surface (sq ft / m2) | 1831 / 170.17 |
Evaporative Heating Surface/Cylinder Volume | 185.34 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 7633 |
Same as above plus superheater percentage | 9236 |
Same as above but substitute firebox area for grate area | 34,978 |
Power L1 | 8529 |
Power MT | 846.58 |