Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 27, p. 125. Works number was 25022 in January 1905.
Data from Charles King, "The Chilian [sic] State Railways," The Railway Magazine (March 1908), pp. 209-214; see also the introductory article in the same journal at February 1908, pp.143-150; and Chilean State Railways (EFE) diagram book, 50, supplied in August 2025 by Allen Stanley from his extensive Rail Data Exchange collection. See also See also Martin Coombs, Chilean steam locomotive lists, Part 1, Broad gauge locos (v2.64, March 2026), p. 103- at []. First date was an estimate until Pablo Moraga emailed Locobase on 27 April 2022 revealing the road numbers and the correct date. Muchas gracias.) Works numbers were 5665-5666 in 1905.
The CSR expended a good deal of effort on reducing the spare-part count by ensuring that different classes used many of the same components. For example, this broad-gauge shunting tank used the same pony trucks, cylinders, motion, drivers, and axle-boxes as did the metre-gauge 2-6-2T shown in Locobase 10755. The duo's ambit was the CSR yards in Santiago and Valparaiso.
Data from "Locomotive Building," The Railroad Gazette, Volume XLII [42], No 22 (31 May 1907), p 758. See also Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 30, p. 272; and Martin Coombs, Chilean steam locomotive lists, Part 1, Broad gauge locos (v2.64, March 2026), p. at [] (Thanks to Pablo Moraga for his 30 January 2016 email correcting Locobase's mistake in wheel arrangement identification.), Works numbers were 31735-31736, 31737-31744, 31804-31806, 31818-31821 in September 1907 and 31845, 31895, 32019 in October 1907.
Broker Wessel Cuval Cia ordered this batch of Moguls in 1907 and Baldwin delivered all 20 by the end of the year. Clearly, the class satisfied requirements as all 20 (21 counting 492, which was built by the shops out of spare parts) remained on the roster through 1955. (Coombs notes that the 492 could have originally come from its first owner contractor Allard Dolfus Sillard et Wiriot).
Data from "New Locomotive Equipment," The Railway Age, Volume (24 August 1900), p 157 and "Locomotive Building", Railroad Gazette, Volume XXXII [32], No 34 (24 August 1900), p. 572. See also See also Martin Coombs, Chilean steam locomotive lists, Part 1, Broad gauge locos (v2.64, March 2026), p. 94 at [] numbers were 5653-5654 in November 1900.
W R Grace ordered these two Moguls for the FC del Estado de Chile's broad-gauge lines. Coombs reported the purchase price as 3,160 pounds sterling. Braden Copper Company bought the pair in 1929 for scrap.
| Principal Dimensions by Steve Llanso of Middle Run Media | ||||
|---|---|---|---|---|
| Class | 291 | Tipo 50 | Tipo 55 | Type 45 |
| Locobase ID | 12718 | 10756 | 11417 | 11939 |
| Railroad | Chilean State Railways (EFE) | Chilean State Railways (EFE) | Chilean State Railways (EFE) | Chilean State Railways (EFE) |
| Country | Chile | Chile | Chile | Chile |
| Whyte | 2-6-0 | 2-6-0T | 2-6-0 | 2-6-0 |
| Number in Class | 1 | 2 | 20 | 2 |
| Road Numbers | 291 / 3046 | 350-351 | 467-486, 492 | 39-40 |
| Gauge | Metre | 5'6" | 5'6" | 5'6" |
| Number Built | 1 | 2 | 20 | 2 |
| Builder | Burnham, Williams & Co | Borsig | Burnham, Williams & Co | Rogers |
| Year | 1905 | 1905 | 1907 | 1900 |
| Valve Gear | Stephenson | Walschaert | Stephenson | Stephenson |
| Locomotive Length and Weight | ||||
| Driver Wheelbase (ft / m) | 9.50 / 2.90 | 7.87 / 2.40 | 13.92 / 4.24 | |
| Engine Wheelbase (ft / m) | 16.67 / 5.08 | 13.94 / 4.25 | 21.25 / 6.48 | |
| Ratio of driving wheelbase to overall engine wheelbase | 0.57 | 0.56 | 0.66 | |
| Overall Wheelbase (engine & tender) (ft / m) | 13.94 / 4.25 | |||
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||||
| Weight on Drivers (lbs / kg) | 59,000 / 26,762 | 61,729 | 79,000 / 35,834 | 96,000 / 43,545 |
| Engine Weight (lbs / kg) | 69,000 / 31,298 | 75,488 / 34,241 | 98,500 / 44,679 | 112,000 / 50,802 |
| Tender Loaded Weight (lbs / kg) | 48,000 | 60,000 / 27,216 | ||
| Total Engine and Tender Weight (lbs / kg) | 117,000 | 158,500 / 71,895 | ||
| Tender Water Capacity (gals / ML) | 2400 / 9.09 | 871 / 3.30 | 3000 / 11.36 | 3500 / 13.26 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 0.80 / 1 | 6 / 6 | ||
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 33 / 16.50 | 34 / 17 | 44 / 22 | 53 / 26.50 |
| Geometry Relating to Tractive Effort | ||||
| Driver Diameter (in / mm) | 42 / 1067 | 43.30 / 1100 | 54.80 / 1392 | 50 / 1270 |
| Boiler Pressure (psi / kPa) | 150 / 1030 | 169.70 / 1170 | 160 / 1100 | 175 / 1210 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 15" x 18" / 381x457 | 14.17" x 21.65" / 360x550 | 17" x 24" / 432x610 | 18" x 24" / 457x610 |
| Tractive Effort (lbs / kg) | 12,295 / 5576.92 | 14,481 / 6568.48 | 17,213 / 7807.69 | 23,134 / 10493.42 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.80 | 4.26 | 4.59 | 4.15 |
| Heating Ability | ||||
| Tubes (number - dia) (in / mm) | 207 - 1.75" / 44 | - 1.75" / | 186 - 2" / 51 | 221 - 2" / 51 |
| Flues (number - dia) (in / mm) | ||||
| Flue/Tube length (ft / m) | 9.33 / 2.84 | 10.72 / 3.27 | 11.33 / 3.45 | |
| Firebox Area (sq ft / m2) | 80.20 / 7.45 | 102.50 / 9.53 | 140 / 13.01 | |
| Grate Area (sq ft / m2) | 13.10 / 1.22 | 12.37 / 1.15 | 16.80 / 1.56 | 26.25 / 2.44 |
| Evaporative Heating Surface (sq ft / m2) | 950 / 88.29 | 730 / 67.85 | 1138 / 105.76 | 1451 / 134.80 |
| Superheating Surface (sq ft / m2) | ||||
| Combined Heating Surface (sq ft / m2) | 950 / 88.29 | 730 / 67.85 | 1138 / 105.76 | 1451 / 134.80 |
| Evaporative Heating Surface/Cylinder Volume | 258.04 | 184.73 | 180.49 | 205.27 |
| Computations Relating to Power Output (More Information) | ||||
| Robert LeMassena's Power Computation | 1965 | 2099 | 2688 | 4594 |
| Same as above plus superheater percentage | 1965 | 2099 | 2688 | 4594 |
| Same as above but substitute firebox area for grate area | 12,030 | 16,400 | 24,500 | |
| Power L1 | 3853 | 3825 | 4438 | |
| Power MT | 431.92 | 320.23 | 305.75 | |