Central Pernambuco 2-8-0 Locomotives in Brazil


Class Details by Steve Llanso of Sweat House Media

Class 22 (Locobase 20948)

Data from Secretaria da Agricultura, Commercio e Obras Publicas, Relatorio Aprestado ao Dr. Presidente do Estado de Minas Geraes ...Dr Francisco Sa, Vol 1, Primeira Parte, Seccao Primeira-Viacao Ferrea (Ouro Preto-Imprensa Official do Estado de Minas Geraes, 1895), pp. 48-50. See also DeGolyer, Volume 20, p. 77. (Thanks to Teemu Koivumaki for his 24 October 2021 email noting these engines, which led to this entry.) Works numbers were 14602-14604 in December 1895 and 14681-14682 in January 1896.

Locobase 20286 shows a Leopoldina Consolidation delivery by Baldwin that had the same firebox (to the 1/4") as the quintet shown here. Although the Baldwin specification for this class doesn't include heating surface area, all of the comparable dimensions match up well.

Pernambuco's railway used 50 lb/yard (25 kg/metre) rail,,

Principal Dimensions by Steve Llanso of Sweat House Media

Class22
Locobase ID20948
RailroadCentral Pernambuco
CountryBrazil
Whyte2-8-0
Number in Class5
Road Numbers22-26
GaugeMetre
Number Built5
BuilderBurnham, Williams & Co
Year1895
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)11.75 / 3.58
Engine Wheelbase (ft / m)18.57 / 5.66
Ratio of driving wheelbase to overall engine wheelbase 0.63
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)63,162 / 28,650
Engine Weight (lbs / kg)71,650 / 32,500
Tender Loaded Weight (lbs / kg)60,001 / 27,216
Total Engine and Tender Weight (lbs / kg)131,651 / 59,716
Tender Water Capacity (gals / ML)2500 / 9.47
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 3.30 / 3
Minimum weight of rail (calculated) (lb/yd / kg/m)26 / 13
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)37 / 940
Boiler Pressure (psi / kPa)150 / 10.30
High Pressure Cylinders (dia x stroke) (in / mm)16" x 20" / 406x508
Tractive Effort (lbs / kg)17,643 / 8002.74
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.58
Heating Ability
Tubes (number - dia) (in / mm)157 - 2.008" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)11.65 / 3.55
Firebox Area (sq ft / m2)83.42 / 7.75
Grate Area (sq ft / m2)15.61 / 1.45
Evaporative Heating Surface (sq ft / m2)1041 / 96.71
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1041 / 96.71
Evaporative Heating Surface/Cylinder Volume223.67
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2342
Same as above plus superheater percentage2342
Same as above but substitute firebox area for grate area12,513
Power L12898
Power MT404.61

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