Compagnie Auxiliare/Rio Grande do Sul 2-6-0 Locomotives in Brazil

Class Details by Steve Llanso of Sweat House Media

Class 219 (Locobase 12918)

Data from Baldwin Locomotive Works Specification for Engines, 1903, as digitized by the DeGolyer Library of Southern Methodist University Vol 28, p. 218. Lionel Wiener, "Locomotives of the Rio Grande do Sul", Volume 19 (15 May 1906), p. 106. Works numbers were 27450-27454 in February 1906; 29194-29195, 29232-29233 in October.

The Cie Auxiliaire de C de F du Bresil paid for nine small Moguls that were delivered to this road in 1906-1907. Wiener commented a few years later that these were the last American-built locomotives supplied to the CA.

NB: see Locobase 13987 for an overview of the RG do Sul as described by Lionel Wiener in 1912.

Class 231 (Locobase 20226)

Data from Lionel Wiener, "Locomotives of the Rio Grande do Sul", Volume 19 (14 June 1913), p. 150-151. See also R Weatherburn, "Brazilian Railways and Locomotives", Railway Times, Volume 92 (31 August 1907), pp. 221-222. (Thanks to Teemu Koivumaki whose 2023 email included a comprehensive spreadsheet of Brazilian steam locomotive builders, works numbers, and owners.) Works numbers were 6264-6266 in March 1907, 6539-6542 in November, 6543-6545 in December, 6589-6592 in July 1909, 6593-6594 in August, and 6595-6598 in October.

See Locobase 20225 for a description of the 67-locomotive order contracted with Borsig in 1906. This entry offers data describing the Moguls. Weatherburn's comments on the design focused on an engine "combining the peculiar features of both hemispheres" The result was an engine and tender that freely adapted "to a road which has become twisted or distorted by the heat" in a way that was "very satisfactory." The short-coupled driver set with the drive on the rear axle and a flangeless middle axle contributed to system in which the "engine, with its most elastically constructed tender bogie" adapted itself to "any practicable curve."

Weatherburn described the valve gear as a combination of Joy and Walschaert. A copper firebox burned either wood or low-calorie coal briquettes.

Another example of the design's mixed influences was the reversing gear. With a the turn of a small handle, the driver could operate it as a European-style screw reverser or the North American lever.

NB: see Locobase 13987 for an overview of the RG do Sul as described by Lionel Wiener in 1912.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID12918 20226
RailroadCompagnie Auxiliare/Rio Grande do SulCompagnie Auxiliare/Rio Grande do Sul
Number in Class923
Road Numbers218-226231-253
Number Built923
BuilderBurnham, Williams & CoBorsig
Valve GearStephensonHeusinger
Locomotive Length and Weight
Driver Wheelbase (ft / m) 9.50 / 2.90 8.33
Engine Wheelbase (ft / m)16 / 4.88
Ratio of driving wheelbase to overall engine wheelbase 0.59
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)48,000 / 21,772
Engine Weight (lbs / kg)59,000 / 26,762
Tender Loaded Weight (lbs / kg)50,000 / 22,680
Total Engine and Tender Weight (lbs / kg)109,000 / 49,442
Tender Water Capacity (gals / ML)2500 / 9.473419 / 12.95
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 5.50 / 5
Minimum weight of rail (calculated) (lb/yd / kg/m)27 / 13.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)42 / 106741.30 / 1050
Boiler Pressure (psi / kPa)150 / 10.30171.10 / 11.80
High Pressure Cylinders (dia x stroke) (in / mm)15" x 18" / 381x45714.17" x 21.65" / 360x550
Tractive Effort (lbs / kg)12,295 / 5576.9215,308 / 6943.60
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.90
Heating Ability
Tubes (number - dia) (in / mm)150 - 2" / 51171 - 1.732" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 8.33 / 2.54 9.84 / 3
Firebox Area (sq ft / m2)62.50 / 5.8159.74 / 5.55
Grate Area (sq ft / m2)11.10 / 1.0314.32 / 1.33
Evaporative Heating Surface (sq ft / m2)710 / 65.99827 / 76.85
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)710 / 65.99827 / 76.85
Evaporative Heating Surface/Cylinder Volume192.85209.28
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation16652450
Same as above plus superheater percentage16652450
Same as above but substitute firebox area for grate area937510,222
Power L129163355
Power MT401.79

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