Vittoria a Minas 2-6-0 Locomotives in Brazil


Class Details by Steve Llanso of Sweat House Media

Class Francisco Sa (Locobase 12862)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 28, p. 62. Works number was 26843 in November 1905 and 27156 in December.

These 3/4-scale Moguls were sold by the V a M to the Paulista, where they took road numbers 1-2. Given that two engines were bought in the next year (Locobase 12863) with exactly the same numbers and name and that they were quite a bit smaller, Locobase supposes this pair quickly proved too big for the V a M.


Class Francisco Sa (Locobase 12863)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 28, p. 62. Works number was 28473-28474 in June 1906 and 29773-29774 in December.

Locobase's suspicion in entry 12862 that the 1905 pair of Moguls were too big and thus sold off very quickly is reinforced by an unequivocal requirement in the specs for their replacements. Under the weights, which came to about half of the earlier locomotives, a Baldwin representative wrote: "Engines to weight EXACTLY [underline in original] as specified."

Principal Dimensions by Steve Llanso of Middle Run Media
ClassFrancisco SaFrancisco Sa
Locobase ID12862 12863
RailroadVittoria a Minas (CVM)Vittoria a Minas (CVM)
CountryBrazilBrazil
Whyte2-6-02-6-0
Number in Class24
Road Numbers4-54-5, 8-9
GaugeMetreMetre
Number Built24
BuilderBurnham, Williams & CoBurnham, Williams & Co
Year19051906
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)12 / 3.66 9.67 / 2.95
Engine Wheelbase (ft / m)19.67 / 615.67 / 4.78
Ratio of driving wheelbase to overall engine wheelbase 0.61 0.62
Overall Wheelbase (engine & tender) (ft / m)38.67 / 11.79
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)80,000 / 36,28748,000 / 21,772
Engine Weight (lbs / kg)92,000 / 41,73156,000 / 25,401
Tender Loaded Weight (lbs / kg)54,000 / 24,49444,000 / 19,958
Total Engine and Tender Weight (lbs / kg)146,000 / 66,225100,000 / 45,359
Tender Water Capacity (gals / ML)3000 / 11.362200 / 8.33
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)44 / 2227 / 13.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)42 / 94041 / 1041
Boiler Pressure (psi / kPa)160 / 1100160 / 1100
High Pressure Cylinders (dia x stroke) (in / mm)18" x 20" / 457x50814" x 18" / 356x457
Tractive Effort (lbs / kg)20,983 / 9517.7411,703 / 5308.40
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.81 4.10
Heating Ability
Tubes (number - dia) (in / mm)200 - 2" / 51153 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)10.75 / 3.28 8.62 / 2.63
Firebox Area (sq ft / m2)119.10 / 11.0769 / 6.41
Grate Area (sq ft / m2)19 / 1.7714 / 1.30
Evaporative Heating Surface (sq ft / m2)1236 / 114.87668 / 62.08
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1236 / 114.87668 / 62.08
Evaporative Heating Surface/Cylinder Volume209.83208.29
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation30402240
Same as above plus superheater percentage30402240
Same as above but substitute firebox area for grate area19,05611,040
Power L134823453
Power MT287.87475.78

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