FC Noreste Argentino Beyer-Garratt Locomotives in Argentina


Class Details by Steve Llanso of Sweat House Media

Class 101 (Locobase 527)

Data is from Wiener (1930) and from Gavin Hamilton's compilation of Garratt data posted at [link] (last accessed 6 September 2005); and "Assam Bengal Railway-Design 1127", Beyer-Garrrat Patent Articulated Locomotives (Manchester, England: Beyer-Peacock & Company Limited, 1931), archived on flickr's Historical Railway Images at [link], et seq, p. 28. Information about the class supplied in Coronel Gustavo Adolfo Tama'o, "Las Locomotoras Garratt en Argentina," in PDF. (Thanks to Carlo Bernasconi for his 22 October 2021 email correcting the railway's gauge.) Works numbers were 6238-6240 and 6349-6352 in 1925.

Ferrocarril General Urquiza. This septet of Double Mogul Garratts was the first of the type to come onto an Argentine railway.

Coronel Tamano commented that this class, which had the typical deep Belpaire firebox and big boiler barrel, had drivers of a size suited to freight and mixed-traffic trains. Tamano explained the reason for choosing a Garratt. To translate and paraphrase: : The light right-of-way, seated on a unsteady "mesopotamian" floor, that ran over an undulating topography that obliged the line constantly to conquer grades had certainly represented the fundamental factors in choosing the design. Sure enough, reported the Colonel, the combination of relatively high power on a light axle loading proved equal to the task.

B-P's 1931 report quoted from a 1927 report of the FCNEA's Directors that noted "these powerful units have exceeded expectations. At present (1927) they are employed between Concordia and Monte Caseros and the substantially heavier trains now hauled on that section have resulted in an appreciable economy in running costs." Four more followed, helping to compile a coal economy record that contrasted the 3.02 kilos consumed by these Garratts to move 100 ton-kilometres with the earlier 2-6-0s that burned 3.83 kilos to achieve the same--a 21.15% improvement." (For North Americans,


Class 201 (Locobase 528)

Data from Gavin Hamilton's excellent compilation of Garratt data posted at [link] (6 September 2005). See also "Dundee Coal Co., Ltd. South Africa-Design 1118", Beyer-Garrrat Patent Articulated Locomotives (Manchester, England: Beyer-Peacock & Company Limited, 1931), archived on flickr's Historical Railway Images at [link], et seq, p. 52. (Thanks to Carlo Bernasconi for his 22 October 2021 email correcting the railway's gauge.)

Standard-gauge Double Mogul Garratts(works # 6645-6647) for the Entre Rios & North Eastern Railway, which later was part of Ferrocarril General Urquiza. Belpaire firebox heating surface included 20 sq ft (1.86 m) of arch tubes.

Locobase adopts the tube & flue length, number, and diameters from the 4-4-2+2-4-4s that were supplied to the FCER three years earlier (Locobase 568).

This set was clearly a combination of the earlier locomotive's firebox and boiler to a slow-freight configuration that featured a greater percentage of engine weight allocated to adhesion and lower drivers for more tractive effort. Water tankage and coal bunkerage dropped considerably as well.

Principal Dimensions by Steve Llanso of Middle Run Media
Class101201
Locobase ID527 528
RailroadFC Noreste Argentino (FCNEA)FC Noreste Argentino (FCNEA)
CountryArgentinaArgentina
Whyte2-6-0+0-6-24-4-2+2-4-4
Number in Class73
Road Numbers101-103, 104-107201-203
GaugeStdStd
Number Built73
BuilderBeyer, PeacockBeyer, Peacock
Year19251930
Valve GearWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)12.85 / 3.9223.34 / 7.11
Engine Wheelbase (ft / m)63.10 / 19.2345 / 13.72
Ratio of driving wheelbase to overall engine wheelbase 0.20 0.52
Overall Wheelbase (engine & tender) (ft / m)73.17 / 22.3065 / 19.81
Axle Loading (Maximum Weight per Axle) (lbs / kg)26,208 / 11,88826,320 / 11,939
Weight on Drivers (lbs / kg)164,640 / 74,680156,352 / 70,920
Engine Weight (lbs / kg)217,616 / 98,709202,720 / 91,952
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)3000 / 11.362400 / 9.09
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 4.50 / 4.103 / 2.70
Minimum weight of rail (calculated) (lb/yd / kg/m)46 / 2365 / 32.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)45.50 / 115645 / 1143
Boiler Pressure (psi / kPa)184.20 / 1270184.20 / 1270
High Pressure Cylinders (dia x stroke) (in / mm)15" x 22" / 381x559 (4)15" x 22" / 381x559 (4)
Tractive Effort (lbs / kg)34,067 / 15452.5534,445 / 15624.01
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.83 4.54
Heating Ability
Tubes (number - dia) (in / mm)172 - 1.835" / 47172 - 1.85" / 47
Flues (number - dia) (in / mm)24 - 5.25" / 13314 - 5.25" / 133
Flue/Tube length (ft / m)10.93 / 3.3310.92 / 3.33
Firebox Area (sq ft / m2)152 / 14.12172 / 15.98
Grate Area (sq ft / m2)34.40 / 3.2034.40 / 3.20
Evaporative Heating Surface (sq ft / m2)1480 / 137.501487 / 138.15
Superheating Surface (sq ft / m2)300 / 27.87270 / 25.08
Combined Heating Surface (sq ft / m2)1780 / 165.371757 / 163.23
Evaporative Heating Surface/Cylinder Volume164.46165.23
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation63366336
Same as above plus superheater percentage74147287
Same as above but substitute firebox area for grate area32,75836,435
Power L176687333
Power MT616.07413.59

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