Brazil National Rwy 2-6-6-2 Locomotives in Brazil


Class Details by Steve Llanso of Sweat House Media

Class 601 (Locobase 3606)

Data from Wiener (1930). Works numbers were 50272-50277 in August 1911 from Brooks and 52999-53006 in February 1913 from Schenectady

See Locobase 20094 for similar Mallets from Henschel. Compare to the Chilean State Railways engine of the same vintage (Locobase 6307) to see the same engine superheated.

Principal Dimensions by Steve Llanso of Middle Run Media
Class601
Locobase ID3606
RailroadBrazil National Rwy
CountryBrazil
Whyte2-6-6-2
Number in Class14
Road Numbers601-606, 613-616, 604-607
GaugeMetre
Number Built14
BuilderAlco - multiple works
Year1911
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)8 / 2.44
Engine Wheelbase (ft / m)36 / 10.97
Ratio of driving wheelbase to overall engine wheelbase 0.22
Overall Wheelbase (engine & tender) (ft / m)60.17 / 18.34
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)131,000 / 59,421
Engine Weight (lbs / kg)157,000 / 71,214
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)4000 / 15.15
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)1800 / 6813
Minimum weight of rail (calculated) (lb/yd / kg/m)36 / 18
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)42 / 1067
Boiler Pressure (psi / kPa)204.50 / 1410
High Pressure Cylinders (dia x stroke) (in / mm)16" x 20" / 406x508
Low Pressure Cylinders (dia x stroke) (in / mm)25.5" x 20" / 648x508
Tractive Effort (lbs / kg)30,409 / 13793.31
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.31
Heating Ability
Tubes (number - dia) (in / mm)200 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)17 / 5.18
Firebox Area (sq ft / m2)113 / 10.50
Grate Area (sq ft / m2)32 / 2.97
Evaporative Heating Surface (sq ft / m2)1884 / 175.09
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1884 / 175.09
Evaporative Heating Surface/Cylinder Volume404.79
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation6544
Same as above plus superheater percentage6544
Same as above but substitute firebox area for grate area23,109
Power L12965
Power MT299.39

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