Bahia Extension / Baturite Extension 4-6-0 Locomotives in Brazil


Class Details by Steve Llanso of Sweat House Media

Class 26 (Locobase 8793)

Data from Lionel Wiener, writing in Cassier's Magazine - an engineering monthly (Vol XXXVIII, #2, June 1910), p 110; and DeGolyer, Volume 32, p.265. Works number was 32896 in August 1908.


Class 28 (Locobase 12090)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 19, p. 48. Works numbers were 13841 in November 1893 and 14475-14479 in October 1895.

Vauclain compounds were sold for all purposes; all had piston valves (these were 8" in diameter) and higher pressure boilers.

The proper name for the railway on which this Ten-wheeler operated was the Prolongamento do Bahia & San Francisco. After testing the 28, the Bahia bought a batch of 5 more. These had names: Antonio Olyntho, Fernandes Pinheiro, Rocha Dias, Miguel Burnier, Pires Ferreira.


Class 35 (Locobase 12196)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 20, p. 131. Works numbers were 14815-14819 in April 1896.

After the initial trial with the Vauclain-compound Ten-wheeler delivered in 1893 and described in Locobase 12090, the Bahia chose to go with the simple-expansion system and ordered five identical locomotives with 16" x 20" cylinders.

Principal Dimensions by Steve Llanso of Middle Run Media
Class262835
Locobase ID8793 12090 12196
RailroadBaturite ExtensionBahia ExtensionBahia Extension
CountryBrazilBrazilBrazil
Whyte4-6-04-6-04-6-0
Number in Class165
Road Numbers262835-39
GaugeMetreMetreMetre
Number Built165
BuilderBurnham, Williams & CoBurnham, Williams & CoBurnham, Williams & Co
Year190818931896
Valve GearStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)11.75 / 3.5812.50 / 3.8112.50 / 3.81
Engine Wheelbase (ft / m)19.83 / 6.0421.90 / 6.6821.90 / 6.68
Ratio of driving wheelbase to overall engine wheelbase 0.59 0.57 0.57
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)54,200 / 24,58552,000 / 23,58752,000 / 23,587
Engine Weight (lbs / kg)71,710 / 32,52768,000 / 30,84468,000 / 30,844
Tender Loaded Weight (lbs / kg)36,000
Total Engine and Tender Weight (lbs / kg)107,710
Tender Water Capacity (gals / ML)1800 / 6.822000 / 7.582500 / 9.47
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)30 / 1529 / 14.5029 / 14.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)42 / 106745 / 114345 / 1143
Boiler Pressure (psi / kPa)160 / 1100180 / 1240160 / 1100
High Pressure Cylinders (dia x stroke) (in / mm)15" x 18" / 381x45710" x 20" / 254x50816" x 20" / 406x508
Low Pressure Cylinders (dia x stroke) (in / mm)17" x 20" / 432x508
Tractive Effort (lbs / kg)13,114 / 5948.4210,104 / 4583.1015,474 / 7018.90
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.13 5.15 3.36
Heating Ability
Tubes (number - dia) (in / mm)147 - 2" / 51132 - 2" / 51132 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)12.03 / 3.6711.79 / 3.5911.79 / 3.59
Firebox Area (sq ft / m2)86 / 7.9983.07 / 7.7284.98 / 7.90
Grate Area (sq ft / m2)15.10 / 1.4015.20 / 1.4115.20 / 1.41
Evaporative Heating Surface (sq ft / m2)1023 / 95.07892 / 82.90894 / 83.09
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1023 / 95.07892 / 82.90894 / 83.09
Evaporative Heating Surface/Cylinder Volume277.87490.64192.08
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation241627362432
Same as above plus superheater percentage241627362432
Same as above but substitute firebox area for grate area13,76014,95313,597
Power L1442033593401
Power MT539.36427.23432.57

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