Noroeste 4-6-0 Locomotives in Brazil


Class Details by Steve Llanso of Sweat House Media

Class 81 (Locobase 13299)

Data fromBaldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 44, p. 125-126. See Locobase 13126 for a full account and bibliography of the construction of this railroad. Works numbers were 33217-33218 in February 1909, 33584-33587 in July 1909.

This quartet of Ten-wheelers introduced coal-burning fireboxes to the wheel arrangement on that railway.


Class 87 (Locobase 13292)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 36, pp. 303-304. See Locobase 13126 for a full account and bibliography of the construction of this railroad. Works numbers were 35759-35760 in December 1910.

Two wood-burning Ten-wheelers delivered in "Exhibition Finish" with engine and tender painted ivy green and gold and the steam chest covers polished. They were tasked with handling curves of 150 metres (492 feet) or about 7 1/2 deg radius (combined with 1 1/2% grades) and maximum grades of 2 % (combined with curves of 200 metres (656 feet) or 5 1/2 deg radius). Rail weight did not exceed 20 kg/metre (40 lb/yard).


Class 89 (Locobase 13293)

Data fromBaldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 36, p. 305-306. See Locobase 13126 for a full account and bibliography of the construction of this railroad. Works number was 35761 in December 1910.

A wood burner like the two sisters that preceded her on the production line (Locobase 13292), the 89 was the "flyer". She had more cylinder volume to compensate for the taller drivers. She was also delivered in what Baldwin specified as "Exhibition Finish." This apparently included polished steam chest covers and painting the engine and tender ivy green and gold.

The specs reported that the 89 would negotiate curves of 150 metres (492 feet) or about 7 1/2 deg radius (combined with 1 1/2% grades) and maximum grades of 2 % (combined with curves of 200 metres (656 feet) or 5 1/2 deg radius). Rail weight was 20 kg/metre (40 lb/yard).

Principal Dimensions by Steve Llanso of Sweat House Media

Class818789
Locobase ID13299 13292 13293
RailroadNoroesteNoroesteNoroeste
CountryBrazilBrazilBrazil
Whyte4-6-04-6-04-6-0
Number in Class621
Road Numbers81-8687-8889
GaugeMetreMetreMetre
Number Built621
BuilderBaldwinBaldwinBaldwin
Year190919101910
Valve GearStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)10 / 3.0511 / 3.3511 / 3.35
Engine Wheelbase (ft / m)19.33 / 5.8920.33 / 6.2020.33 / 6.20
Ratio of driving wheelbase to overall engine wheelbase 0.52 0.54 0.54
Overall Wheelbase (engine & tender) (ft / m)43.79 / 13.35
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)60,000 / 27,21660,000 / 27,21664,000 / 29,030
Engine Weight (lbs / kg)75,000 / 34,01978,000 / 35,38080,000 / 36,287
Tender Loaded Weight (lbs / kg)52,000 / 23,58752,000 / 23,58752,000 / 23,587
Total Engine and Tender Weight (lbs / kg)127,000 / 57,606130,000 / 58,967132,000 / 59,874
Tender Water Capacity (gals / ML)2600 / 9.852600 / 9.852600 / 9.85
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)6 / 6
Minimum weight of rail (calculated) (lb/yd / kg/m)33 / 16.5033 / 16.5036 / 18
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)45 / 114342 / 106748 / 1219
Boiler Pressure (psi / kPa)160 / 11160 / 11160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)16" x 20" / 406x50816" x 18" / 406x45716" x 20" / 406x508
Tractive Effort (lbs / kg)15,474 / 7018.9014,921 / 6768.0614,507 / 6580.27
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.88 4.02 4.41
Heating Ability
Tubes (number - dia) (in / mm)132 - 2" / 51166 - 2" / 51166 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)11.79 / 3.5912.50 / 3.8112.50 / 3.81
Firebox Area (sq ft / m2)92 / 8.55101 / 9.38101 / 9.38
Grate Area (sq ft / m2)15 / 1.3916.60 / 1.5416.60 / 1.54
Evaporative Heating Surface (sq ft / m2)897 / 83.331180 / 109.621180 / 109.62
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)897 / 83.331180 / 109.621180 / 109.62
Evaporative Heating Surface/Cylinder Volume192.73281.70253.53
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation240026562656
Same as above plus superheater percentage240026562656
Same as above but substitute firebox area for grate area14,72016,16016,160
Power L1349945054634
Power MT385.70496.59478.88

All material Copyright © SteamLocomotive.com
Wes Barris