Paracatu 4-6-0 Locomotives in Brazil


Class Details by Steve Llanso of Sweat House Media

Class 4 (Locobase 15393)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 78, pp. 233+. See also the Centro-Oeste website's entry on the Paracatu at [link], last accessed 31 August 2013. Works numbers were 59002-59005 in January 1926.

A few months after ordering the pair of relatively large superheated Mikados shown in Locobase 15394, the EF de Paracatu added four much small wood-burning Ten-wheelers to haul passenger trains on the 45 lb/yard (22.5 kg/metre) rail, scale moderate 2 1/2% grades, and get around curve radii of 80 metres (263 feet).

The Paracatu's slow northwesterly progress toward its namesake city reached Melo Viana, 154 km (95.6 miles) from Taipa in 1927. But it would be another decade before the last 19 km (11.8 miles) to Barra do Funchal would open in 1937. In the meantime, the line had been built 57 km (35.4 miles) in the opposite direction from Taipa to reach -gua Suja on the eastern bank of the River Para. But lack of a bridge kept the line from linking to Belo Horizonte, its goal in that direction.

In 1931, the EF Paracatu was redubbed a "Ramal" (line or extension) of the new Rede Mineira de Viatpo (RMV), a consortium of railways (Oeste de Minas, Goias, and Paracatu) that supported mining in Goias.

Principal Dimensions by Steve Llanso of Middle Run Media
Class4
Locobase ID15393
RailroadParacatu (EF de)
CountryBrazil
Whyte4-6-0
Number in Class4
Road Numbers4-7
GaugeMetre
Number Built4
BuilderBaldwin
Year1926
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m) 9.50 / 2.90
Engine Wheelbase (ft / m)17.67 / 5.39
Ratio of driving wheelbase to overall engine wheelbase 0.54
Overall Wheelbase (engine & tender) (ft / m)39.54 / 12.05
Axle Loading (Maximum Weight per Axle) (lbs / kg)15,428
Weight on Drivers (lbs / kg)46,000 / 20,865
Engine Weight (lbs / kg)60,000 / 27,216
Tender Loaded Weight (lbs / kg)45,000 / 20,412
Total Engine and Tender Weight (lbs / kg)105,000 / 47,628
Tender Water Capacity (gals / ML)2000 / 7.58
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)26 / 13
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)38 / 965
Boiler Pressure (psi / kPa)170 / 1170
High Pressure Cylinders (dia x stroke) (in / mm)13" x 18" / 330x457
Tractive Effort (lbs / kg)11,568 / 5247.16
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.98
Heating Ability
Tubes (number - dia) (in / mm)125 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 9.83 / 3
Firebox Area (sq ft / m2)63 / 5.85
Grate Area (sq ft / m2)11.16 / 1.04
Evaporative Heating Surface (sq ft / m2)619 / 57.51
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)619 / 57.51
Evaporative Heating Surface/Cylinder Volume223.85
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1897
Same as above plus superheater percentage1897
Same as above but substitute firebox area for grate area10,710
Power L13637
Power MT522.93

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