Paulista 2-8-0 Locomotives in Brazil


Class Details by Steve Llanso of Sweat House Media

Class 42 (Locobase 12136)

Data from Baldwin Locomotive Works Specification for Engines, 1888, as digitized by the DeGolyer Library of Southern Methodist University Vol 17, 193 and Vol 20, p. 220. Works numbers were 14210-14215 in January 1895 and 15074-15077 in October 1896.

High-volume Vauclain compounds for the time with 11 1/2" piston valves. Good balance in the heating surfaces and relatively high axle loading.


Class 58 (Locobase 12224)

Data from Baldwin Locomotive Works Specification for Engines, 1888, as digitized by the DeGolyer Library of Southern Methodist University Vol 17, 193. Works numbers were 15074-15077 in October 1896.

It's interesting to Locobase that the Paulista took delivery of 4 more Vauclain compounds with 15" HP and 25" LP cylinders while also ordering this sextet of similar, but smaller and less powerful Vauclain compounds.


Class 80 (Locobase 13659)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 44, p. 23. Works numbers were 38819-38821 in November 1912.


Class unknown (Locobase 20854)

Data from Lionel Wiener, Les chemins de fer du Breñsil (Paris: H. Dunod et E Pinat, Editeurs, 1912), p. 115. Works numbers were 3878-3880 in 1898.

Principal Dimensions by Steve Llanso of Middle Run Media
Class425880unknown
Locobase ID12136 12224 13659 20854
RailroadPaulistaPaulistaPaulistaPaulista
CountryBrazilBrazilBrazilBrazil
Whyte2-8-02-8-02-8-02-8-0
Number in Class10633
Road Numbers42-47, 54-5758-63 / 141-14680-82 / 180-182
Gauge5'3"5'3"5'3"Metre
Number Built10633
BuilderBurnham, Williams & CoBurnham, Williams & CoBaldwinBeyer, Peacock
Year1894189619121898
Valve GearStephensonStephensonWalschaertStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)14 / 4.2714 / 4.2715 / 4.5714.67 / 4.47
Engine Wheelbase (ft / m)22.50 / 6.8621.92 / 6.6823.50 / 7.1618.92 / 5.77
Ratio of driving wheelbase to overall engine wheelbase 0.62 0.64 0.64 0.78
Overall Wheelbase (engine & tender) (ft / m)48.25 / 14.7147.58 / 14.5051.21 / 15.61
Axle Loading (Maximum Weight per Axle) (lbs / kg)36,94530,856
Weight on Drivers (lbs / kg)152,000 / 68,946123,424 / 55,984164,000 / 74,38956,218 / 25,500
Engine Weight (lbs / kg)170,000 / 77,111184,000 / 83,46169,446 / 31,500
Tender Loaded Weight (lbs / kg)80,000100,000 / 45,35953,572 / 24,300
Total Engine and Tender Weight (lbs / kg)250,000 / 77,111284,000 / 128,820123,018 / 55,800
Tender Water Capacity (gals / ML)4000 / 15.153250 / 12.315000 / 18.941848 / 7
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 4.20 / 3.80
Minimum weight of rail (calculated) (lb/yd / kg/m)63 / 31.5051 / 25.5068 / 3423 / 11.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)50 / 127050 / 127050 / 127045 / 1143
Boiler Pressure (psi / kPa)180 / 1240180 / 1240190 / 1310211.80 / 1460
High Pressure Cylinders (dia x stroke) (in / mm)15" x 28" / 381x71113.5" x 26" / 343x66021" x 28" / 533x71115.75" x 20" / 400x508 (1)
Low Pressure Cylinders (dia x stroke) (in / mm)25" x 28" / 635x71123" x 26" / 584x66022.99" x 22.99" / 584x584 (1)
Tractive Effort (lbs / kg)28,350 / 12859.3621,569 / 9783.5539,884 / 18091.1014,094 / 6392.94
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.36 5.72 4.11 3.99
Heating Ability
Tubes (number - dia) (in / mm)301 - 2" / 51252 - 2" / 51385 - 2" / 51205 - 1.614" / 41
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)12 / 3.6612.25 / 3.7313.83 / 4.22 8.33 / 2.54
Firebox Area (sq ft / m2)153.70 / 14.28120 / 11.15178 / 16.5475.99 / 7.06
Grate Area (sq ft / m2)32.40 / 3.0132 / 2.9735.70 / 3.3212.49 / 1.16
Evaporative Heating Surface (sq ft / m2)2012 / 186.991720 / 159.852950 / 274.06802 / 74.50
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)2012 / 186.991720 / 159.852950 / 274.06802 / 74.50
Evaporative Heating Surface/Cylinder Volume351.33399.31262.81355.66
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation5832576067832645
Same as above plus superheater percentage5832576067832645
Same as above but substitute firebox area for grate area27,66621,60033,82016,095
Power L12622278354173400
Power MT152.12198.84291.28533.33

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