Data provided by Carlos Alberto Fern+ndez Priotti in Bryan Attewell ([] Steam Locomotive simulator program (April 2000) and DeGolyer, Vol 72, pp. 216+. Works numbers were 55131-55147, 55153-55183 in November 1921, 55506-55514 in July 1922.
Two years after Baldwin delivered 25 superheated Mikes (C11) built to a 10-year-old design (Locobase ), the company came up with these Mountains. They repeated the C12 Pacific specifications from 1921 (Locobase 3713) in almost all respects including the details of the Belpaire firebox and 10" (254 mm) diameter piston valves, but added a fourth axle to increase adhesion weight. The specs noted that these engines would operate at 4,100 metres (13,451 feet) above sea level, but that gradients would not exceed 2 1/2%, compensated, at any point.
See Locobase 3713 for Paul Warner's discussion of the financing arrangements for this large order. In a contemporary advertisement, Baldwin said that the new line between Rosario de Lerma and Huaytiquina over the Andes was nearly complete and would connect with the Antofagasta to establish the first trans-continental railway.
Data provided by Carlos Alberto Fern+ndez Priotti in Bryan Attewell ([] Steam Locomotive simulator program (April 2000).
Sixteen years after Baldwin delivered 59 powerful Mountains, Henschel added 24 more, plus 6 that, like the Class 25 4-8-4s in South Africa, had exhaust-condensing equipment that allowed them to operate in areas that had very little usable water (such as the line from Cordoba to San Juan). When the condensing equipment was removed in the 1950s (probably because diesels had taken over that service), the six engines were renumbered in series with the other (883-888).
Data provided by Carlos Alberto Fern+ndez Priotti in Bryan Attewell ([] Steam Locomotive simulator program (April 2000).
Essentially repeats of the C12/C14 Mountains, these were among the last steam locomotives to be built by Baldwin (works numbers 73538-73567, road numbers 1801-1830) and by Alco (who split the order). They were big and powerful locomotives for the gauge.
Principal Dimensions by Steve Llanso of Middle Run Media | |||
---|---|---|---|
Class | C12 | C14 | C16 |
Locobase ID | 3719 | 3720 | 3721 |
Railroad | FC Central Norte Argentino (FCCNA) | FC Central Norte Argentino (FCCNA) | FC Central Norte Argentino (FCCNA) |
Country | Argentina | Argentina | Argentina |
Whyte | 4-8-2 | 4-8-2 | 4-8-2 |
Number in Class | 60 | 30 | 60 |
Road Numbers | 800-859 | 859-882, 8001-8006 | 1801-1860 |
Gauge | Metre | Metre | Metre |
Number Built | 60 | 30 | 60 |
Builder | Baldwin | Henschel & Sohn | several |
Year | 1922 | 1938 | 1948 |
Valve Gear | Walschaert | ||
Locomotive Length and Weight | |||
Driver Wheelbase (ft / m) | 13.50 / 4.11 | ||
Engine Wheelbase (ft / m) | 32.42 / 9.88 | ||
Ratio of driving wheelbase to overall engine wheelbase | 0.42 | ||
Overall Wheelbase (engine & tender) (ft / m) | 57.50 / 17.53 | ||
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 30,865 / 14,000 | ||
Weight on Drivers (lbs / kg) | 119,392 / 54,155 | 117,376 / 53,241 | 121,856 / 55,273 |
Engine Weight (lbs / kg) | 170,800 / 77,474 | ||
Tender Loaded Weight (lbs / kg) | 97,000 / 43,999 | ||
Total Engine and Tender Weight (lbs / kg) | 267,800 / 121,473 | ||
Tender Water Capacity (gals / ML) | 4500 / 17.05 | 6159 / 23.33 | 6165 / 23.35 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2000 / 7570 | 9.50 / 9 | 9.50 / 9 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 50 / 25 | 49 / 24.50 | 51 / 25.50 |
Geometry Relating to Tractive Effort | |||
Driver Diameter (in / mm) | 50 / 1270 | 50 / 1270 | 50 / 1270 |
Boiler Pressure (psi / kPa) | 204.50 / 1410 | 203.10 / 1400 | 204.50 / 1410 |
High Pressure Cylinders (dia x stroke) (in / mm) | 19" x 24" / 483x610 | 19.7" x 24" / 500x610 | 19.7" x 24" / 500x610 |
Tractive Effort (lbs / kg) | 30,120 / 13662.22 | 32,159 / 14587.09 | 32,381 / 14687.79 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.96 | 3.65 | 3.76 |
Heating Ability | |||
Tubes (number - dia) (in / mm) | 165 - 1.96" / 50 | ||
Flues (number - dia) (in / mm) | 28 - 5.35" / 136 | ||
Flue/Tube length (ft / m) | 19.50 / 5.94 | 19.33 / 5.89 | 19.33 / 5.89 |
Firebox Area (sq ft / m2) | 151 / 14.03 | ||
Grate Area (sq ft / m2) | 44 / 4.09 | 44.10 / 4.10 | 44 / 4.09 |
Evaporative Heating Surface (sq ft / m2) | 2590 / 240.71 | 2604 / 242.01 | 2578 / 239.59 |
Superheating Surface (sq ft / m2) | 648 / 60.22 | 650 / 60.41 | 631 / 58.64 |
Combined Heating Surface (sq ft / m2) | 3238 / 300.93 | 3254 / 302.42 | 3209 / 298.23 |
Evaporative Heating Surface/Cylinder Volume | 328.86 | 307.55 | 304.48 |
Computations Relating to Power Output (More Information) | |||
Robert LeMassena's Power Computation | 8998 | 8957 | 8998 |
Same as above plus superheater percentage | 10,798 | 10,748 | 10,798 |
Same as above but substitute firebox area for grate area | 37,055 | ||
Power L1 | 19,857 | ||
Power MT | 1466.67 |