Data from Alco class 280-81 Order C-556 builder's card supplied in February 2023 by Teemu Koivumaki..Works numbers were 60512-60514 in June 1919.
Immediately following the two Ten-wheelers destined for the Tubarao a Ararangua, Cooke began turning out these Consolidations for the same railway. But its primary customer--the Brazilian government--diverted the trio to the DTC.
Its design served as the template for several Brazilian government orders in this period.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 3 |
| Locobase ID | 21125 |
| Railroad | Dona Tereza Cristina |
| Country | Brazil |
| Whyte | 2-8-0 |
| Number in Class | 3 |
| Road Numbers | 3-5 |
| Gauge | Metre |
| Number Built | 3 |
| Builder | Alco-Cooke |
| Year | 1919 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 10.25 / 3.12 |
| Engine Wheelbase (ft / m) | 17.25 / 5.26 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.59 |
| Overall Wheelbase (engine & tender) (ft / m) | 48 / 14.63 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 74,000 / 33,566 |
| Engine Weight (lbs / kg) | 81,000 / 36,741 |
| Tender Loaded Weight (lbs / kg) | 58,600 / 26,581 |
| Total Engine and Tender Weight (lbs / kg) | 139,600 / 63,322 |
| Tender Water Capacity (gals / ML) | 3000 / 11.36 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 4 / 3.60 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 31 / 15.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 38 / 965 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 20" / 406x508 |
| Tractive Effort (lbs / kg) | 18,324 / 8311.64 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.04 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 154 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 14.33 / 4.37 |
| Firebox Area (sq ft / m2) | 76 / 7.06 |
| Grate Area (sq ft / m2) | 18.40 / 1.71 |
| Evaporative Heating Surface (sq ft / m2) | 1225 / 113.81 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1225 / 113.81 |
| Evaporative Heating Surface/Cylinder Volume | 263.20 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2944 |
| Same as above plus superheater percentage | 2944 |
| Same as above but substitute firebox area for grate area | 12,160 |
| Power L1 | 3494 |
| Power MT | 416.38 |