Porto Alegre a Novo Hamburgo 0-4-4 Locomotives in Brazil


Class Details by Steve Llanso of Sweat House Media

Class 6 (Locobase 20101)

Data from Lionel Wiener, "Locomotives of the Rio Grande do Sul", Locomotive Magazine, Volume 18 (15 July 1912), pp. 257-258. See also Report by Consul Bennington, "Sao Pedro do Rio Grande do Sul, Consular Report on Commerce, Manufactures, Etc. No. 121 (October 1890), pp. 117-. Works number was 1160 in 1878.

Wiener explained that the 26-mile (43 km] PA&NH between Uargem on the Porto Alegre & Uruguayana and Novo Hamburgo was one of the oldest railways in the republic (having opened in 1874) and the oldest constituent of the RG do Sul. Bought by Rio Grande do Sul State in 1903 and leased to the Compagnie Auxiliaire in 1905, the PA&NH built a connection to Jacuhy in 1910 and became a trunk line connector between Porto Alegre and the interior.

The small Dubs tanks had outsized cabs, a tall stack, small dome, and enormous headlight.

Principal Dimensions by Steve Llanso of Middle Run Media
Class6
Locobase ID20101
RailroadPorto Alegre a Novo Hamburgo
CountryBrazil
Whyte0-4-4T
Number in Class1
Road Numbers6
GaugeMetre
Number Built1
BuilderDubs & Co
Year1878
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)5 / 1.52
Engine Wheelbase (ft / m)13.42 / 4.09
Ratio of driving wheelbase to overall engine wheelbase 0.37
Overall Wheelbase (engine & tender) (ft / m)13.42 / 4.09
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)
Engine Weight (lbs / kg)31,360 / 14,225
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)31,360 / 14,225
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)42 / 1067
Boiler Pressure (psi / kPa)130 / 900
High Pressure Cylinders (dia x stroke) (in / mm)11" x 18" / 279x457
Tractive Effort (lbs / kg)5730 / 2599.09
Factor of Adhesion (Weight on Drivers/Tractive Effort)
Heating Ability
Tubes (number - dia) (in / mm)118 - 1.25" / 32
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 8.32 / 2.54
Firebox Area (sq ft / m2)108 / 10.03
Grate Area (sq ft / m2)
Evaporative Heating Surface (sq ft / m2)421 / 39.11
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)421 / 39.11
Evaporative Heating Surface/Cylinder Volume212.64
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation
Same as above plus superheater percentage
Same as above but substitute firebox area for grate area14,040
Power L14417
Power MT

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