Sobral 2-6-0 Locomotives in Brazil


Class Details by Steve Llanso of Sweat House Media

Class 8 (Locobase 12163)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 20, p. 26 Works numbers were 14450-14451 in September 1895.

The Sobral was later incorporated into the North Eastern Railway of Brasil.

Principal Dimensions by Steve Llanso of Middle Run Media
Class8
Locobase ID12163
RailroadSobral
CountryBrazil
Whyte2-6-0
Number in Class2
Road Numbers8-9
GaugeMetre
Number Built2
BuilderBurnham, Williams & Co
Year1895
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 9.50 / 2.90
Engine Wheelbase (ft / m)15.83 / 4.82
Ratio of driving wheelbase to overall engine wheelbase 0.60
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)45,000 / 20,412
Engine Weight (lbs / kg)55,000 / 24,948
Tender Loaded Weight (lbs / kg) / 816
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)1800 / 5.68
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)25 / 12.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)42 / 1067
Boiler Pressure (psi / kPa)160 / 1100
High Pressure Cylinders (dia x stroke) (in / mm)14" x 18" / 356x457
Tractive Effort (lbs / kg)11,424 / 5181.85
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.94
Heating Ability
Tubes (number - dia) (in / mm)193 - 1.5" / 38
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 8.25 / 2.51
Firebox Area (sq ft / m2)64.21 / 5.97
Grate Area (sq ft / m2)10 / 0.93
Evaporative Heating Surface (sq ft / m2)689 / 64.03
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)689 / 64.03
Evaporative Heating Surface/Cylinder Volume214.84
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1600
Same as above plus superheater percentage1600
Same as above but substitute firebox area for grate area10,274
Power L13527
Power MT518.38

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