Data from Alco class 260 S94 Order C813 builder's card supplied in February 2023 by Teemu Koivumaki. Works numbers were 64269-64270 in March 1923.
According to Al Weber's number-by-number accounting, the 5 came off the line just before the 4. In any case, though they had the same class number as the EFCB 170-194 (Locobase 21116 and 21117), these two lacked a superheater, had a lower boiler pressure and a plain firebox and grate, but longer strokes.
Data from DeGolyer, Vol 66, pp. 338+. Works numbers were 56121-56123 in January 1923.
Ordered at the same time as the single Ten-wheeler shown in Locobase 15173, these wood-burning Consolidations used the same boiler and firebox, but put 7 additional short tons (6,350 kg) on the drivers for only a 2 ton (1,814 kg) gain in overall engine weight. Their tenders carried more water and more wood (3.2 cords or 11 cu m). Both types exhausted their steam through large Rushton Improved spark-arresting cabbage stacks.
Piaui (or Piauhy) State lies in the northeast of Brazil between Ceara on the east and Maranhao on the west. The railway operated between the inland city of Piracuruca (namesake of the river of which it was a port) and the port at Amarracao 148 km (92 miles away). Its first 50-km (31 mile) section inland to Bom Principio opened in 1922. In the next year, the railway reached Frexeiras, Cocal, and Deserto before opening the line to Piracuruca on 19 November 1923. Years later, the line was extended another 43 km (26.7 miles) to Periperi, which lay on the Rio dos Mattos.
Principal Dimensions by Steve Llanso of Middle Run Media | ||
---|---|---|
Class | 5 | 7 |
Locobase ID | 21118 | 15174 |
Railroad | Central do Piauhy | Central do Piaui |
Country | Brazil | Brazil |
Whyte | 2-8-0 | 2-8-0 |
Number in Class | 2 | 3 |
Road Numbers | 5,4 | 7-9 |
Gauge | Metre | Metre |
Number Built | 2 | 3 |
Builder | Alco-Cooke | Baldwin |
Year | 1923 | 1923 |
Valve Gear | Walschaert | Walschaert |
Locomotive Length and Weight | ||
Driver Wheelbase (ft / m) | 12.50 / 3.81 | 12.75 / 3.89 |
Engine Wheelbase (ft / m) | 19.58 / 5.97 | 20 / 6.10 |
Ratio of driving wheelbase to overall engine wheelbase | 0.64 | 0.64 |
Overall Wheelbase (engine & tender) (ft / m) | 45.50 / 13.87 | 46.08 / 14.05 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||
Weight on Drivers (lbs / kg) | 84,500 / 38,329 | 79,000 / 35,834 |
Engine Weight (lbs / kg) | 94,000 / 42,638 | 89,000 / 40,370 |
Tender Loaded Weight (lbs / kg) | 71,000 / 32,205 | 75,500 / 34,246 |
Total Engine and Tender Weight (lbs / kg) | 165,000 / 74,843 | 164,500 / 74,616 |
Tender Water Capacity (gals / ML) | 3500 / 13.26 | 3700 / 14.02 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | ||
Minimum weight of rail (calculated) (lb/yd / kg/m) | 35 / 17.50 | 33 / 16.50 |
Geometry Relating to Tractive Effort | ||
Driver Diameter (in / mm) | 42 / 1067 | 42 / 1067 |
Boiler Pressure (psi / kPa) | 160 / 1100 | 160 / 1100 |
High Pressure Cylinders (dia x stroke) (in / mm) | 17" x 22" / 432x559 | 17" x 22" / 432x559 |
Tractive Effort (lbs / kg) | 20,588 / 9338.57 | 20,588 / 9338.57 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.10 | 3.84 |
Heating Ability | ||
Tubes (number - dia) (in / mm) | 203 - 2" / 51 | 145 - 2" / 51 |
Flues (number - dia) (in / mm) | ||
Flue/Tube length (ft / m) | 11.50 / 3.51 | 10.50 / 3.20 |
Firebox Area (sq ft / m2) | 106 / 9.85 | 108 / 10.03 |
Grate Area (sq ft / m2) | 16 / 1.49 | 17.90 / 1.66 |
Evaporative Heating Surface (sq ft / m2) | 1328 / 123.38 | 899 / 83.52 |
Superheating Surface (sq ft / m2) | ||
Combined Heating Surface (sq ft / m2) | 1328 / 123.38 | 899 / 83.52 |
Evaporative Heating Surface/Cylinder Volume | 229.77 | 155.55 |
Computations Relating to Power Output (More Information) | ||
Robert LeMassena's Power Computation | 2560 | 2864 |
Same as above plus superheater percentage | 2560 | 2864 |
Same as above but substitute firebox area for grate area | 16,960 | 17,280 |
Power L1 | 3601 | 2789 |
Power MT | 375.80 | 311.33 |