Data from table in 1947 Locomotive Cyclopedia; and Baldwin Locomotive Works Negative 13,111, Class 2-8-2 18 1/2, S 1 supplied in March 2023 in an email from Teemu Koivumaki.. Works numbers 72208-72216 in 1944 and 73076-73078 in 1945.
Built for specific service within a narrow range, this wood-burner class nevertheless had all of the late-steam-era appliances and construction details. It used 10" (254 mm) piston valves to supply steam to the cylinders.
A noteworthy feature of the specs is the suprisingly high boiler pressure on the metre gauge, expecially considering its primary fuel generated so many fewer BTUs per lb than an equivalent coal burner would have. A combustion chamber contributed 48 sq ft (4.46 sq m) to the firebox heating surface area.
766 later was sold to the Tela Railway.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 760 |
| Locobase ID | 956 |
| Railroad | Mogiana |
| Country | Brazil |
| Whyte | 2-8-2 |
| Number in Class | 12 |
| Road Numbers | 760-771 |
| Gauge | metre |
| Number Built | 12 |
| Builder | Baldwin |
| Year | 1944 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 12.75 / 3.89 |
| Engine Wheelbase (ft / m) | 30.59 / 9.32 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.42 |
| Overall Wheelbase (engine & tender) (ft / m) | 58.33 / 17.78 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 136,600 / 61,961 |
| Engine Weight (lbs / kg) | 181,000 / 82,100 |
| Tender Loaded Weight (lbs / kg) | 86,300 / 39,145 |
| Total Engine and Tender Weight (lbs / kg) | 267,300 / 121,245 |
| Tender Water Capacity (gals / ML) | 4000 / 15.15 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 57 / 28.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 45 / 1143 |
| Boiler Pressure (psi / kPa) | 255 / 1760 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18.5" x 22" / 470x559 |
| Tractive Effort (lbs / kg) | 36,267 / 16450.45 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.77 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 154 - 2" / 51 |
| Flues (number - dia) (in / mm) | 32 - 5.375" / 137 |
| Flue/Tube length (ft / m) | 14 / 4.27 |
| Firebox Area (sq ft / m2) | 174 / 16.16 |
| Grate Area (sq ft / m2) | 66.80 / 6.21 |
| Evaporative Heating Surface (sq ft / m2) | 1970 / 183.02 |
| Superheating Surface (sq ft / m2) | 531 / 49.33 |
| Combined Heating Surface (sq ft / m2) | 2501 / 232.35 |
| Evaporative Heating Surface/Cylinder Volume | 287.82 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 17,034 |
| Same as above plus superheater percentage | 20,611 |
| Same as above but substitute firebox area for grate area | 53,688 |
| Power L1 | 21,289 |
| Power MT | 1374.35 |