Data from DeGolyer, Volume 66, pp. 378+. See Locobase 10996 for a brief description of tank-frame locomotives. Works number was 51870 in June 1919.
This tank-frame engine (a Baldwin specialty) was originally ordered on 4 May 1917 by the International Engineering & Tracing Company, the Russian import. When Kerensky's Provisional Government took over for the fallen Czar Nicholas II, slews of orders were cancelled. Most locomotives were redirected by their builders and this engine was resold to BW & Company, a major British-owned trading company in Brazil. The 1 had three tanks, one of 210 US gallons (795 litres) between the engine frame rails that formed the sides of the tank and the other two in the usual side tank positions and holding a total of 265 gallons (1,003 litres). The specs declared that the locomotive had to have coal and water capacity sufficient to run 7 1/2 miles (12 km). Their trains consisted of 25 loaded cars of nitrate, each weighing 3 1/2 metric tons (3.85 short tons), to be hauled up a 1 1/2% grade. "Keryma" was a nitrate office for the Compania Salitera Keryma at Iquique.
Principal Dimensions by Steve Llanso of Sweat House Media | |
|---|---|
| Class | Keryma |
| Locobase ID | 15188 |
| Railroad | Balfour, Williamson & Company |
| Country | Chile |
| Whyte | 2-6-2T |
| Number in Class | 1 |
| Road Numbers | 1 |
| Gauge | 2'6" |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1918 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 5.33 / 1.62 |
| Engine Wheelbase (ft / m) | 5.33 / 1.62 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | 5.33 / 1.62 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 34,000 / 15,422 |
| Engine Weight (lbs / kg) | 34,000 / 15,422 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 34,000 / 15,422 |
| Tender Water Capacity (gals / ML) | 1600 / 6.06 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 19 / 9.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 28 / 711 |
| Boiler Pressure (psi / kPa) | 165 / 11.40 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 10" x 14" / 254x356 |
| Tractive Effort (lbs / kg) | 7013 / 3181.05 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.85 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 70 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 8.67 / 2.64 |
| Firebox Area (sq ft / m2) | 26 / 2.42 |
| Grate Area (sq ft / m2) | 5.50 / 0.51 |
| Evaporative Heating Surface (sq ft / m2) | 301 / 27.96 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 301 / 27.96 |
| Evaporative Heating Surface/Cylinder Volume | 236.52 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 908 |
| Same as above plus superheater percentage | 908 |
| Same as above but substitute firebox area for grate area | 4290 |
| Power L1 | 2608 |
| Power MT | 507.32 |