Machado de Mello 4-6-0 Locomotives in Brazil


Class Details by Steve Llanso of Sweat House Media

Class Diamantina (Locobase 13535)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 33, p. 369. Works numbers were 34182 in January 1910, 34608 in May.

These Ten-wheelers went to work first for this construction company. The second locomotives was named Barao de Guaycuhy.

By 1923, the Central do Brazil had taken them over and renumbered them 94-95.

Principal Dimensions by Steve Llanso of Middle Run Media
ClassDiamantina
Locobase ID13535
RailroadMachado de Mello
CountryBrazil
Whyte4-6-0
Number in Class2
Road Numbers2-3 / 94-95 / 1094-1095
GaugeMetre
Number Built2
BuilderBaldwin
Year1910
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 9.67 / 2.95
Engine Wheelbase (ft / m)18.67 / 5.69
Ratio of driving wheelbase to overall engine wheelbase 0.52
Overall Wheelbase (engine & tender) (ft / m)43.54 / 13.27
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)53,650 / 24,335
Engine Weight (lbs / kg)67,650 / 30,686
Tender Loaded Weight (lbs / kg)44,000 / 19,958
Total Engine and Tender Weight (lbs / kg)111,650 / 50,644
Tender Water Capacity (gals / ML)2200 / 8.33
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)4 / 4
Minimum weight of rail (calculated) (lb/yd / kg/m)30 / 15
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) 4.70
Heating Ability
Tubes (number - dia) (in / mm)120 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)11.83 / 3.61
Firebox Area (sq ft / m2)67 / 6.22
Grate Area (sq ft / m2)12.50 / 1.16
Evaporative Heating Surface (sq ft / m2)805 / 74.79
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)805 / 74.79
Evaporative Heating Surface/Cylinder Volume251.01
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2000
Same as above plus superheater percentage2000
Same as above but substitute firebox area for grate area10,720
Power L13981
Power MT490.77

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