Paulista 0-6-2 Locomotives in Brazil


Class Details by Steve Llanso of Sweat House Media

Class 26 (Locobase 13654)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 44, p. 3. Works numbers were 39195-39196 in February 1913.

A larger version of the 0-6-2Ts built for the 60-cm gauge and shown in Locobase 13653, this pair could burn coal or wood. Their trailing trucks had a 3" (76-mm) swing to either side. The cab had a double roof, a frequently found feature in such tropical conditions.


Class 51 (Locobase 12190)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 20, p. 110. Works numbers were 14763-14765 in March 1896 and 15078-15081 in November.

The specifications say that this wood-burning tank was headed for the Descalvadense Section, where the sharpest curves were measured at 131-ft radius or 40 degrees. They had noticeably smaller boilers than did their nearly identical counterparts operating on the metre gauge (Locobase 12225).


Class 68 (Locobase 12225)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 20, p. 110. Works numbers were 15078-15081.

Locobase is puzzled when he compares this batch of radial-tank wood burners bought for the metre gauge with the broad-gauge engines of identical power produced earlier in the year and described in Locobas 12190. Curiously, although the power dimensions are identical, the boiler is much smaller in the broad-gauge locomotives.


Class 8 (Locobase 13653)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 44, p. 1. Works numbers were 37662-37663 in April 1912.

The Baldwin specs for these wood-burning radial tanks depict a narrow, cramped, lightly built railway. The rail weighed 18-kg/metre (36 lb/yard) with ties laid every 18" (0.5 metres), a 3% grade measuring 1,420 metres (4,659 ft), another of 2.5% and 1,600 metres (5,249 ft) long, and a minimum curve radius of 85 meters (279 ft) or 13.5 degrees.

This pair was rebuilt twice. The first time featured the installation of a pony truck under the smokebox that duplicated the arrangement of the slightly later 10-11 (Locobase 13988). After the sale to Usina Tiuma, the engines were renumbered as 9 and 10 and rebuilt again. The 9 now lost its rear traling axle (thus, a 2-6-0T). The 10 lost its rear axle as well, but gained a tender and was a 2-6-0.

Principal Dimensions by Steve Llanso of Middle Run Media

Class2651688
Locobase ID13654 12190 12225 13653
RailroadPaulistaPaulistaPaulistaPaulista
CountryBrazilBrazilBrazilBrazil
Whyte0-6-2ST0-6-2ST0-6-2ST0-6-2T
Number in Class2742
Road Numbers26, 8851-53, 64-67 / 210-21268-718-9
GaugeMetre5'3"Metre60 cm
Number Built2742
BuilderBaldwinBurnham, Williams & CoBurnham, Williams & CoBaldwin
Year1913189618961912
Valve GearWalschaertStephensonStephensonWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m) 8.67 / 2.649 / 2.74 8.67 / 2.647 / 2.13
Engine Wheelbase (ft / m)17.83 / 5.4315 / 4.5717.83 / 5.4314.08 / 4.29
Ratio of driving wheelbase to overall engine wheelbase 0.49 0.60 0.49 0.50
Overall Wheelbase (engine & tender) (ft / m)17.83 / 5.4315 / 4.5717.83 / 5.4314.08 / 4.29
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)63,000 / 28,57664,250 / 29,14360,000 / 27,21641,500 / 18,824
Engine Weight (lbs / kg)73,000 / 33,11274,250 / 33,67947,000 / 21,319
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)73,000 / 33,11274,250 / 33,67947,000 / 21,319
Tender Water Capacity (gals / ML)800 / 3.03800 / 3.03800 / 3.03550 / 2.08
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)35 / 17.5036 / 1833 / 16.5023 / 11.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)38 / 96544 / 111844 / 111833 / 838
Boiler Pressure (psi / kPa)170 / 11.70150 / 10.30150 / 10.30160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)15" x 18" / 381x45715" x 20" / 381x50815" x 20" / 381x50812" x 16" / 305x406
Tractive Effort (lbs / kg)15,401 / 6985.7813,040 / 5914.8513,040 / 5914.859495 / 4306.86
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.09 4.93 4.60 4.37
Heating Ability
Tubes (number - dia) (in / mm)124 - 1.75" / 4475 - 2" / 51124 - 1.75" / 4487 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)11.75 / 3.5811.06 / 3.3711.75 / 3.5810.17 / 3.10
Firebox Area (sq ft / m2)76 / 7.0651.75 / 4.8172 / 6.6942 / 3.90
Grate Area (sq ft / m2)10.80 / 111.25 / 1.0510.60 / 0.99 9.40 / 0.87
Evaporative Heating Surface (sq ft / m2)739 / 68.65482 / 44.80735 / 68.31444 / 41.25
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)739 / 68.65482 / 44.80735 / 68.31444 / 41.25
Evaporative Heating Surface/Cylinder Volume200.73117.83179.68211.99
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1836168815901504
Same as above plus superheater percentage1836168815901504
Same as above but substitute firebox area for grate area12,920776310,8006720
Power L13273199229452748
Power MT343.61205.06324.63437.95

All material Copyright © SteamLocomotive.com
Wes Barris