Cia de Murrieta 2-6-0 Locomotives in Brazil


Class Details by Steve Llanso of Sweat House Media

Class Sao Simao (Locobase 11997)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 17, p. 116. Works number was 12227 in September 1891.

The Ciade Murrieta bought two locomotives for a comparison of capabilities. This wood-burning Mogul had an orthodox arrangement while the Serra Azul (#2) was delivered as an 0-6-2 with shorter boiler tubes but otherwise quite similar; see Locobase 11998.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassSao Simao
Locobase ID11997
RailroadCia de Murrieta
CountryBrazil
Whyte2-6-0
Number in Class1
Road Numbers1
Gauge60 cm
Number Built1
BuilderBurnham, Williams & Co
Year1891
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)7 / 2.13
Engine Wheelbase (ft / m)12.83 / 3.91
Ratio of driving wheelbase to overall engine wheelbase 0.55
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)25,000 / 11,340
Engine Weight (lbs / kg)30,000 / 13,608
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)900 / 3.41
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)14 / 7
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)33 / 838
Boiler Pressure (psi / kPa)130 / 9
High Pressure Cylinders (dia x stroke) (in / mm)10" x 16" / 254x406
Tractive Effort (lbs / kg)5358 / 2430.35
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.67
Heating Ability
Tubes (number - dia) (in / mm)59 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)10.99 / 3.35
Firebox Area (sq ft / m2)31 / 2.88
Grate Area (sq ft / m2) 7.20 / 0.67
Evaporative Heating Surface (sq ft / m2)326 / 30.30
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)326 / 30.30
Evaporative Heating Surface/Cylinder Volume224.14
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation936
Same as above plus superheater percentage936
Same as above but substitute firebox area for grate area4030
Power L12365
Power MT625.67

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