Sudoeste da Bahia 2-6-0 Locomotives in Brazil


Class Details by Steve Llanso of Sweat House Media

Class 30 (Locobase 15440)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 79, p.222. Works number was 59697 in November 1926.

Described as a switcher, this wood-burning Mogul tank was nonetheless a superheated engine with 8" (203 mm) piston valves. Like the other SOe do Bahia locomotives, this little locomotive later operated on the subsidiary Nazareth railway.

Principal Dimensions by Steve Llanso of Sweat House Media

Class30
Locobase ID15440
RailroadSudoeste da Bahia
CountryBrazil
Whyte2-6-0T
Number in Class1
Road Numbers30
GaugeMetre
Number Built1
BuilderBaldwin
Year1926
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m) 9.67 / 2.95
Engine Wheelbase (ft / m)16.67 / 5.08
Ratio of driving wheelbase to overall engine wheelbase 0.58
Overall Wheelbase (engine & tender) (ft / m)16.67 / 5.08
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)73,000 / 33,112
Engine Weight (lbs / kg)85,000 / 38,555
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)85,000 / 38,555
Tender Water Capacity (gals / ML)1000 / 3.79
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)41 / 20.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)37 / 940
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)14" x 18" / 356x457
Tractive Effort (lbs / kg)14,589 / 6617.47
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.00
Heating Ability
Tubes (number - dia) (in / mm)72 - 2" / 51
Flues (number - dia) (in / mm)12 - 5.375" / 137
Flue/Tube length (ft / m) 8.50 / 2.59
Firebox Area (sq ft / m2)86 / 7.99
Grate Area (sq ft / m2)13.10 / 1.22
Evaporative Heating Surface (sq ft / m2)545 / 50.63
Superheating Surface (sq ft / m2)114 / 10.59
Combined Heating Surface (sq ft / m2)659 / 61.22
Evaporative Heating Surface/Cylinder Volume169.94
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2358
Same as above plus superheater percentage2759
Same as above but substitute firebox area for grate area18,112
Power L16926
Power MT627.50

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