Data from Lionel Wiener, "Locomotives of the Rio Grande do Sul", Locomotive Magazine, Volume 18 (15 July 1912), p. 146.
Built by a Scottish firm but intended for light, twisty conditions and burning low-calorie briquettes, this pair as delivered had the straight lines and plate frame of a British engines and the balloon stack, big headlight, "cowcatcher", and covered footplate of North American locomotives. Sister engine Klemes arrived in 1882. Later modification deleted the separate safety valve stand just ahead of the cab, a larger steam dome, small sand box ahead of the dome and a slender stack.Data from Lionel Wiener, Les chemins de fer du Brésil (Paris: H. Dunod et E Pinat, Editeurs, 1912), pp. 118-121.
These Ten-wheelers were the last of the 67-engine order from Borsig delivered to the Rio Grande do Sul. They came in two versions (saturated boiler in Locobase 20856 and superheated shown here) both using Borsig's patent Hochwald piston valves. If the saturated engines were exceptionally powerful, these gave "excellent results".
Principal Dimensions by Steve Llanso of Sweat House Media | ||
|---|---|---|
| Class | Abelha | unknown |
| Locobase ID | 20097 | 20857 |
| Railroad | Rio Grande do Sul | Rio Grande do Sul |
| Country | Brazil | Brazil |
| Whyte | 4-6-0 | 4-6-0 |
| Number in Class | 2 | |
| Road Numbers | 1-2/131-132 | |
| Gauge | Metre | Metre |
| Number Built | 2 | |
| Builder | Neilson & Co | Borsig |
| Year | 1881 | 1911 |
| Valve Gear | Stephenson | Walschaert |
| Locomotive Length and Weight | ||
| Driver Wheelbase (ft / m) | 9.46 / 2.88 | |
| Engine Wheelbase (ft / m) | 15.58 / 4.75 | 19.96 / 6.08 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.47 | |
| Overall Wheelbase (engine & tender) (ft / m) | 37.50 / 11.43 | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||
| Weight on Drivers (lbs / kg) | 66,139 / 30,000 | |
| Engine Weight (lbs / kg) | 95,901 / 43,000 | |
| Tender Loaded Weight (lbs / kg) | 85,980 / 38,000 | |
| Total Engine and Tender Weight (lbs / kg) | 181,881 / 81,000 | |
| Tender Water Capacity (gals / ML) | / 13 | |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | / 5 | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 37 / 18.50 | |
| Geometry Relating to Tractive Effort | ||
| Driver Diameter (in / mm) | 40 / 1016 | 45 / 1143 |
| Boiler Pressure (psi / kPa) | 130 / 9 | 169.70 / 11.70 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 13" x 21" / 330x533 | 15.98" x 20" / 406x508 |
| Tractive Effort (lbs / kg) | 9804 / 4447.02 | 16,371 / 7425.77 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.04 | |
| Heating Ability | ||
| Tubes (number - dia) (in / mm) | 150 - 1.625" / 41 | 149 - 2.008" / 51 |
| Flues (number - dia) (in / mm) | / 148 | |
| Flue/Tube length (ft / m) | 9.46 / 2.88 | 11.48 / 3.50 |
| Firebox Area (sq ft / m2) | 47 / 4.37 | 78.15 / 7.26 |
| Grate Area (sq ft / m2) | 10.20 / 0.95 | 21.53 / 2 |
| Evaporative Heating Surface (sq ft / m2) | 650 / 60.39 | 1307 / 121.45 |
| Superheating Surface (sq ft / m2) | ||
| Combined Heating Surface (sq ft / m2) | 650 / 60.39 | 1307 / 121.45 |
| Evaporative Heating Surface/Cylinder Volume | 201.48 | 281.52 |
| Computations Relating to Power Output (More Information) | ||
| Robert LeMassena's Power Computation | 1326 | 3654 |
| Same as above plus superheater percentage | 1326 | 3654 |
| Same as above but substitute firebox area for grate area | 6110 | 13,262 |
| Power L1 | 2377 | 4654 |
| Power MT | 465.40 | |