Ramal Dumont 0-6-2 Locomotives in Brazil


Class Details by Steve Llanso of Sweat House Media

Class Barao de Ataliba Nogueira (Locobase 11567)

Data from Baldwin Locomotive Works Specification for Engines, 1888, as digitized by the DeGolyer Library of Southern Methodist University Vol 15, p. 4. Works number was 9817 in February 1889.

This tank locomotive served a 54-62-km (33.5-38.5-mile -sources vary) narrow-gauge line in Santos State. It opened in 1889 and served the coffee-plantation economy until 1939-1940.

Principal Dimensions by Steve Llanso of Middle Run Media
ClassBarao de Ataliba Nogueira
Locobase ID11567
RailroadRamal Dumont
CountryBrazil
Whyte0-6-2T
Number in Class1
Road Numbers1
Gauge60 cm
Number Built1
BuilderBurnham, Parry, Williams & Co
Year1889
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 6.83 / 2.08
Engine Wheelbase (ft / m)13.08 / 3.99
Ratio of driving wheelbase to overall engine wheelbase 0.52
Overall Wheelbase (engine & tender) (ft / m)13.08 / 3.99
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)19,800 / 8981
Engine Weight (lbs / kg)26,270 / 11,916
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)250 / 0.95
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)11 / 5.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)33 / 838
Boiler Pressure (psi / kPa)130 / 900
High Pressure Cylinders (dia x stroke) (in / mm)9" x 16" / 229x406
Tractive Effort (lbs / kg)4340 / 1968.59
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.56
Heating Ability
Tubes (number - dia) (in / mm)44 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 9.50 / 2.90
Firebox Area (sq ft / m2)24.40 / 2.27
Grate Area (sq ft / m2) 5.70 / 0.53
Evaporative Heating Surface (sq ft / m2)216 / 20.07
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)216 / 20.07
Evaporative Heating Surface/Cylinder Volume183.35
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation741
Same as above plus superheater percentage741
Same as above but substitute firebox area for grate area3172
Power L12051
Power MT685.10

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