Central do Brasil 2-10-4 Locomotives in Brazil

Class Details by Steve Llanso of Sweat House Media

Class 1651 (Locobase 4418)

Data from Baldwin photo and data table shown on [] (confirmed 18 Nov 2003). [] (18 November 2003) for info on builders. See also James Waite, "EF Dona Tereza Cristina", archived by Rob Dickinson on his International Steam Pages at [], last accessed 30 May 2018. (Thanks to Teemu Koivumaki for his 7 February 2023 email supplying the correct builder's ranges and numbers and a March 2003 supplying Baldwin's builder's card for negative 11,809 2-10-4-20 S, 2.) Baldwin works numbers were 62354-62363 in April 1940, Alco contributed 69243-69249 in February 1940..

Baby Texas design that was actually smaller than the Sorcobana's Santa Fe of the same era.

The webasite [] (18 November 2003) published schematics of several locomotives from which the wheelbases and tender capacities have been drawn. They credited all 14 in the class to Baldwin, but Connelly's Baldwin list shows only 10.

After only a few years on the EFCB, all fourteen of the class were sold to the EF Dona Tereza Cristina as their 300-313. There they operated well into the 1980s. Waite reported on their reputation on that line: "These most impressive locos were immensely popular with the railwaymen and were powerful, rode well and were fast. The sight and sound of one of them at speed heading a long coal train was one of the most memorable railway experiences the world had to offer in the 1970's.'"

He added a style note: "For the most part they projected an all-American image though their smokebox doors looked as though they had come straight from the SNCF and were probably a legacy of Chapelonñs influence in the 1950ñs."

A boiler explosion in 312 in 1981 led to a severe reduction in boiler pressure, but the class lingered until the last engine ran on 14 May 1986.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID4418
RailroadCentral do Brasil (EFCB)
Number in Class17
Road Numbers1651-1667
Number Built17
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)17.32 / 5.28
Engine Wheelbase (ft / m)47.20 / 14.39
Ratio of driving wheelbase to overall engine wheelbase 0.37
Overall Wheelbase (engine & tender) (ft / m)75.82 / 23.11
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)164,275 / 74,514
Engine Weight (lbs / kg)237,975 / 107,944
Tender Loaded Weight (lbs / kg)96,000 / 43,545
Total Engine and Tender Weight (lbs / kg)333,975 / 151,489
Tender Water Capacity (gals / ML)4756 / 18.02
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)11 / 10
Minimum weight of rail (calculated) (lb/yd / kg/m)55 / 27.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)48.30 / 1227
Boiler Pressure (psi / kPa)248 / 17.10
High Pressure Cylinders (dia x stroke) (in / mm)20" x 24" / 508x610
Tractive Effort (lbs / kg)41,898 / 19004.64
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.92
Heating Ability
Tubes (number - dia) (in / mm)29 - 2.25" / 57
Flues (number - dia) (in / mm)106 - 3.5" / 89
Flue/Tube length (ft / m)17 / 5.18
Firebox Area (sq ft / m2)319 / 29.64
Grate Area (sq ft / m2)70.30 / 6.53
Evaporative Heating Surface (sq ft / m2)2250 / 209.03
Superheating Surface (sq ft / m2)896 / 83.24
Combined Heating Surface (sq ft / m2)3146 / 292.27
Evaporative Heating Surface/Cylinder Volume257.83
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation17,434
Same as above plus superheater percentage22,316
Same as above but substitute firebox area for grate area101,263
Power L127,244
Power MT1828.11

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