Oeste de Minas 2-8-0 Locomotives in Brazil


Class Details by Steve Llanso of Sweat House Media

Class 10 (Locobase 13252)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 44, p 56. Works numbers were 33854-33857 in September 1909.


Class 13 (Locobase 11644)

Data from Baldwin Locomotive Works Specification for Engines, 1888, as digitized by the DeGolyer Library of Southern Methodist University Vol 15, p. 202. Works numbers were 10497-10498, 10500, 10505 in December 1889.

Even for this very skinny gauge, these Brazilian Consolidations were on the small side. They were delivered with names: Piumhy, Araxa, Campo Bello, and Inhauma.

In 1931, they were taken into the Rede Minera de Viacao and renumbered 63-66.


Class 23 (Locobase 12026)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 17, p. 248. Works numbers were 12636-12637 in April 1892; 12925, 12934, 12942-12943 in September; and 13829-13832 in November 1893.

These Consolidations were just a bit smaller than the 1889 batch described in Locobase 11644. Their names were Toscano de Brito, Pinto Mendes, Cerqueira Lima, Albadia, Antonio Guedes, Xavier Pereira, Paraopeha, Abbadia, Alfonso Penna, and Randolpho Paiva. Piston valves measured 7" in diameter.


Class 50 (Locobase 15122)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 66, p. 255. Works numbers were 52418-52420 in September 1919.

These Consolidations were ordered at the same time as the 4-6-2s shown in Locobase 15120 and followed them on Baldwin's production line at Eddystone.


Class 56 (Locobase 15121)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 66, p. 253. See also Welber, "Patinho feio: ou simplesmente a "meia-oito" do SOo Emfdio", GaxetaLeaks blog at [] . Works number was 52256 in August 1919.

This single 70 cm-gauge Consolidation joined the O de M in the last years before the 30" width was replaced by the metre gauge. It was larger and more powerful than the earlier 2-8-0s. Indeed, according to the blog post "Ugly Duckling", this engine stood out among all of the 70 cm locomotives. The writer discounts one persistent claim that the driver diameter shows that this locomotive was originally meant for the metre gauge.

In 1931, the 30-inch gauge lines were taken into the Rede Mineira de Viacao. This engine was renumbered 68 and was later preserved in colorful livery


Class 8 (Locobase 13247)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 31, p 156. Works numbers were 32624-32625 in January 1908.

As small as these Consolidations were, they were still expected to haul 115 long tons up a 3% straight grade.


Class Doutor Castro (Locobase 12133)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 19, p. 172. Works number was 14134 in October 1894.

This one simple-expansion Mogul was essentially identical to the 1893 compounds shown in Locobase 12026. The tubes were lengthened by 3 inches, which resulted in 2 sq ft less area (the vagaries of measurement ...). Also, the adhesion wheelbase grew by 5 inches.

Like the other O de M locomotives, the good Doutor went into the Rede Minera de Viacao in 1931 and was renumbered 69. The RMdeV later became the Viacao Ferrea Centro Oeste and ultimately the Rede Ferroviaria Federal SA.


Class Lamounier (Locobase 12197)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 20, p 132. Works number was 14822 in May 1896.

This Consolidation was built for a much bigger version of the O de M than its predecessors as the rail gauge jumped from 2 ft 6 inches to the metre gauge, which was a little over 9 inches wider. The specifications note that the O de M's system included a 3% grade that was 30 km (18.6 miles) long.and curves with radii down to 100 metres (17 degrees of curvature). Rail weight was measured at 50 lb/yard.


Class Marcos Castro (Locobase 12134)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 19, p. 173. Works numbers were 14135 in October 1894.

When the O de M returned to the Vauclain compound for its basic Consoldation design, it increased cylinder volume by enlarging each of the pair of cylinders in a casting by an inch in diameter. The growth also reduced the compounding ratio to a more realistic number. A single 7" (178 mm) piston valve fed each casting.

Marcos Castro and his stablemate Mendes Junior both took new numbers -- 70 and 71-- in 1931 when the O de M was transformed into the Rede Minera de Viacao.


Class Paraspeba (Locobase 12089)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 17, p. 248. Works numbers were 13829-13832 in November 1893.

These Vauclain compound Consolidations had 7" (178 mm) piston valves and higher pressure boilers. Otherwise, they were essentially identical to the earlier batches shown in Locobases 11644 and 12026. They also had names: Paraspeba, Abbadia, Alfonso Penna, and Randolpho Paiva.

In 1931, they received Rede Minera de Viacao numbers 58, 59, 60, and 62.

Principal Dimensions by Steve Llanso of Sweat House Media

Class1013235056
Locobase ID13252 11644 12026 15122 15121
RailroadOeste de MinasOeste de MinasOeste de MinasOeste de MinasOeste de Minas
CountryBrazilBrazilBrazilBrazilBrazil
Whyte2-8-02-8-02-8-02-8-02-8-0
Number in Class44931
Road Numbers10-1313-1623-3150-5256 / 68
GaugeMetre2'6"2'6"2'6"2'6"
Number Built44931
BuilderBaldwinBurnham, Parry, Williams & CoBurnham, Williams & CoBaldwinBaldwin
Year19091889189219191919
Valve GearWalschaertStephensonStephensonWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)10.67 / 3.25 9.58 / 2.92 9.17 / 2.8010.67 / 3.2510 / 3.05
Engine Wheelbase (ft / m)17 / 5.1814.83 / 4.5215.08 / 4.6017 / 5.1816.17 / 4.93
Ratio of driving wheelbase to overall engine wheelbase 0.63 0.65 0.61 0.63 0.62
Overall Wheelbase (engine & tender) (ft / m)37.12 / 11.3143.27 / 13.1939.27 / 11.97
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)72,000 / 32,65944,000 / 19,95872,000 / 32,65956,500 / 25,628
Engine Weight (lbs / kg)80,000 / 36,28750,000 / 22,68080,000 / 36,28761,500 / 27,896
Tender Loaded Weight (lbs / kg)48,000 / 21,77248,000 / 21,77238,000 / 17,237
Total Engine and Tender Weight (lbs / kg)128,000 / 58,059128,000 / 58,05999,500 / 45,133
Tender Water Capacity (gals / ML)2400 / 9.091500 / 5.681500 / 5.682400 / 9.092000 / 7.58
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)4 / 44 / 4
Minimum weight of rail (calculated) (lb/yd / kg/m)30 / 1518 / 930 / 1524 / 12
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)38 / 96533 / 83833 / 96538 / 96537 / 940
Boiler Pressure (psi / kPa)180 / 12.40130 / 9180 / 12.40180 / 12.40190 / 13.10
High Pressure Cylinders (dia x stroke) (in / mm)15" x 20" / 381x50813" x 16" / 330x4068" x 20" / 203x50815" x 20" / 381x50813" x 18" / 330x457
Low Pressure Cylinders (dia x stroke) (in / mm)14" x 20" / 356x508
Tractive Effort (lbs / kg)18,118 / 8218.209054 / 4106.838947 / 4058.3018,118 / 8218.2013,278 / 6022.81
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.97 4.86 3.97 4.26
Heating Ability
Tubes (number - dia) (in / mm)138 - 2" / 5189 - 2" / 5189 - 2" / 51138 - 2" / 51100 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)14.50 / 4.4212.75 / 4.1912.75 / 3.8914.50 / 4.4213.58 / 4.14
Firebox Area (sq ft / m2)79 / 7.3446 / 4.2846 / 4.2879 / 7.3446 / 4.27
Grate Area (sq ft / m2)22.10 / 2.0511.10 / 1.0310.90 / 1.0122.10 / 2.0512.40 / 1.15
Evaporative Heating Surface (sq ft / m2)1121 / 104.14650 / 60.41650 / 60.411121 / 104.14753 / 69.96
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1121 / 104.14650 / 60.41650 / 60.411121 / 104.14753 / 69.96
Evaporative Heating Surface/Cylinder Volume274.04264.44558.63274.04272.31
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation39781443196239782356
Same as above plus superheater percentage39781443196239782356
Same as above but substitute firebox area for grate area14,2205980828014,2208740
Power L142252560244542254165
Power MT517.47513.08517.47650.07

Principal Dimensions by Steve Llanso of Sweat House Media

Class8Doutor CastroLamounierMarcos CastroParaspeba
Locobase ID13247 12133 12197 12134 12089
RailroadOeste de MinasOeste de MinasOeste de MinasOeste de MinasOeste de Minas
CountryBrazilBrazilBrazilBrazilBrazil
Whyte2-8-02-8-02-8-02-8-02-8-0
Number in Class21124
Road Numbers8-933 / 699 / 14134, 37 / 70- 7129-32
GaugeMetre2'6"Metre2'6"2'6"
Number Built21124
BuilderBurnham, Williams & CoBurnham, Williams & CoBurnham, Williams & CoBurnham, Williams & CoBurnham, Williams & Co
Year19081894189618941893
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)11.33 / 3.45 9.58 / 2.8011.75 / 3.58 9.17 / 2.80 9.17 / 2.80
Engine Wheelbase (ft / m)17.67 / 5.3915.42 / 4.6018.58 / 5.6615.58 / 4.7515.08 / 4.60
Ratio of driving wheelbase to overall engine wheelbase 0.64 0.62 0.63 0.59 0.61
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)58,000 / 26,30862,000 / 28,123
Engine Weight (lbs / kg)67,000 / 30,39172,000 / 32,659
Tender Loaded Weight (lbs / kg)48,000 / 21,77245,000
Total Engine and Tender Weight (lbs / kg)115,000 / 52,163117,000 / 32,659
Tender Water Capacity (gals / ML)2400 / 9.092000 / 5.682500 / 9.472000 / 7.581500 / 5.68
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)24 / 1226 / 13
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)38 / 96533 / 96537 / 94033 / 83833 / 838
Boiler Pressure (psi / kPa)160 / 11180 / 12.40150 / 10.30180 / 12.40180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)15" x 18" / 381x45713" x 16" / 203x50816" x 20" / 406x5089" x 16" / 229x4068" x 16" / 203x406
Low Pressure Cylinders (dia x stroke) (in / mm) / 35615" x 16" / 381x40614" x 16" / 356x406
Tractive Effort (lbs / kg)14,495 / 6574.8312,537 / 5686.6917,643 / 8002.748836 / 4007.957158 / 3246.82
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.00 3.51
Heating Ability
Tubes (number - dia) (in / mm)150 - 2" / 5189 - 2" / 51157 - 2" / 5189 - 2" / 5189 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 9.42 / 2.8713 / 3.8911.65 / 3.5513 / 3.9612.75 / 3.89
Firebox Area (sq ft / m2)80 / 7.4346 / 4.2885.55 / 7.9546 / 4.2846 / 4.28
Grate Area (sq ft / m2)15.70 / 1.4610.90 / 1.0115.70 / 1.4610.90 / 1.0111 / 1.02
Evaporative Heating Surface (sq ft / m2)820 / 76.18648 / 60.411036 / 96.28648 / 60.22650 / 60.41
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)820 / 76.18648 / 60.411036 / 96.28648 / 60.22650 / 60.41
Evaporative Heating Surface/Cylinder Volume222.73263.63222.59550.04698.29
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation25121962235519621980
Same as above plus superheater percentage25121962235519621980
Same as above but substitute firebox area for grate area12,800828012,83382808280
Power L133583536290926563056
Power MT510.56413.76

All material Copyright © SteamLocomotive.com
Wes Barris