Data from catalogue illustration reprinted on narrowmind.railfan.net, supplemented by DeGolyer, Vol 79, pp. 238+. Works numbers were 61034-61036 in September 1929.
The photo shows a low-drivered, wood-burning cabbage-stack Mikado headed to a line that had 2 1/2% grades and curves with radii of 250 feet (76.2 metres) or 23 degrees. Steam was admitted to the cylinders through 8" (203 mm) piston valves. A note in the specifications states that the bottom of fire box was to be "rectilineal, so as to avoid angles in which impure properties of water accumulate."
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 310 |
| Locobase ID | 5034 |
| Railroad | Rede de Viacao Cearense |
| Country | Brazil |
| Whyte | 2-8-2 |
| Number in Class | 3 |
| Road Numbers | 310-312 |
| Gauge | Metre |
| Number Built | 3 |
| Builder | Baldwin |
| Year | 1929 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 11 / 3.35 |
| Engine Wheelbase (ft / m) | 24.17 / 7.37 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.46 |
| Overall Wheelbase (engine & tender) (ft / m) | 49.96 / 15.23 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 88,000 / 39,916 |
| Engine Weight (lbs / kg) | 118,900 / 53,932 |
| Tender Loaded Weight (lbs / kg) | 60,000 / 27,216 |
| Total Engine and Tender Weight (lbs / kg) | 178,900 / 81,148 |
| Tender Water Capacity (gals / ML) | 3000 / 11.36 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 37 / 18.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 42 / 1067 |
| Boiler Pressure (psi / kPa) | 174 / 1200 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17" x 22" / 432x559 |
| Tractive Effort (lbs / kg) | 22,389 / 10155.49 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.93 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 222 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 15.50 / 4.72 |
| Firebox Area (sq ft / m2) | 118 / 10.96 |
| Grate Area (sq ft / m2) | 29.20 / 2.71 |
| Evaporative Heating Surface (sq ft / m2) | 1910 / 177.44 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1910 / 177.44 |
| Evaporative Heating Surface/Cylinder Volume | 330.47 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 5081 |
| Same as above plus superheater percentage | 5081 |
| Same as above but substitute firebox area for grate area | 20,532 |
| Power L1 | 5269 |
| Power MT | 528.01 |