Usina Tiuma 2-6-0 Locomotives in Brazil


Class Details by Steve Llanso of Sweat House Media

Class 6 (Locobase 15183)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 66, p. 365 and Vol 72, pp. 159+. See also the account at [], last accessed 8 May 2013. Works numbers were 53375 in July 1920 and 57668 in March 1924.

Purchased by the Williams Company, these little wood-burning Moguls worked for a long-running sugar central that opened in 1881 in Pernambuco State just northwest of Recife as the Central Mill Spo Lourento da Mata. The sugar mill was bought by the British-owned Northern Brazillian Sugar Factories Company and renamed Usina Ti+ma. The mill remained in operation for over 90 years and by the mid-1920s had 61 km (37.9 miles) of railway.

Principal Dimensions by Steve Llanso of Sweat House Media

Class6
Locobase ID15183
RailroadUsina Tiuma
CountryBrazil
Whyte2-6-0
Number in Class2
Road Numbers6-7
Gauge60 cm
Number Built2
BuilderBaldwin
Year1920
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)33.07 / 10.08
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)26,500 / 12,020
Engine Weight (lbs / kg)30,000 / 13,608
Tender Loaded Weight (lbs / kg)31,000 / 14,061
Total Engine and Tender Weight (lbs / kg)61,000 / 27,669
Tender Water Capacity (gals / ML)1200 / 4.55
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)15 / 7.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)33 / 838
Boiler Pressure (psi / kPa)150 / 10.30
High Pressure Cylinders (dia x stroke) (in / mm)10" x 16" / 254x406
Tractive Effort (lbs / kg)6182 / 2804.11
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.29
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 / 30.29
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)326 / 30.29
Evaporative Heating Surface/Cylinder Volume224.14
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1080
Same as above plus superheater percentage1080
Same as above but substitute firebox area for grate area4650
Power L12728
Power MT680.85

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