Leopoldina Railway Beyer-Garratt Locomotives in Brazil


Class Details by Steve Llanso of Sweat House Media

Class 380 (Locobase 587)

Data from [] (July 2002); and "Leopoldina Railway-Design 1148", Beyer-Garrrat Patent Articulated Locomotives (Manchester, England: Beyer-Peacock & Company Limited, 1931), archived on flickr's Historical Railway Images at [], et seq, pp. 32-33. Works numbers were 6572-6573) in 1929. Later batches comprised 6845-6850 in 1937, and 7026-7033 in 1943.

Three batches of Double Pacific Garratts produced to increase train tractive effort by 80% when substituting one for the rigid-wheelbase Pacifics already in service.. These were assigned to the heavy night passenger train run of 323 miles (520 kph) between Campos and Victoria. The route had a ruling grade of 3% which the Garratt could take at 15 mph with 10 coaches.

A photo from [] (July 2002) shows the Belpaire firebox and the classic Garratt layout. A special bit of style are the white-rimmed tires.


Class 400 (Locobase 586)

Data from [] (July 2002); A[rthur] E[dward] Durrant, Garratt Locomotives of the World (revised edition) (Newton Abbott, UK: David & Charles, 1981), pp 86; and Tufnell (1986). Works numbers were 6976-6979 in 1943.

A relatively rare four-coupled Garratt, this design served the Canatgallao branch of the Portello-Cordiero line. The large Belpaire firebox reflects the low quality of the fuel, which Tufnell (1986) wrote included coal with ash contents as high as 40% or wood. Handling such dodgy fuel required rocking grates and self-cleaning ashpans. The constant-lead radial valve gear actuated poppet valves.

Spreading its adhesive weight over four axles allowed useful work on an axle loading of 9 long tons, around very sharp curves, and up grades of up to 3%.

Principal Dimensions by Steve Llanso of Middle Run Media

Class380400
Locobase ID587 586
RailroadLeopoldina RailwayLeopoldina Railway
CountryBrazilBrazil
Whyte4-6-2+2-6-42-4-2+2-4-2
Number in Class164
Road Numbers380-395400-403
GaugeMetreMetre
Number Built164
BuilderBeyer, PeacockBeyer, Peacock
Year19291943
Valve GearWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)19 / 5.7912.33 / 1.88
Engine Wheelbase (ft / m)46 / 14.0216.92 / 5.16
Ratio of driving wheelbase to overall engine wheelbase 0.41 0.73
Overall Wheelbase (engine & tender) (ft / m)67.08 / 20.4562.01 / 18.90
Axle Loading (Maximum Weight per Axle) (lbs / kg)23,369 / 10,60019,709 / 8940
Weight on Drivers (lbs / kg)141,094 / 63,99977,162 / 35,000
Engine Weight (lbs / kg)249,781 / 113,299154,321 / 69,999
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)249,781 / 113,299154,321 / 69,999
Tender Water Capacity (gals / ML)4200 / 15.912041 / 7.73
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)5 / 4.50 2.80 / 3
Minimum weight of rail (calculated) (lb/yd / kg/m)39 / 19.5032 / 16
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)50 / 127040 / 1016
Boiler Pressure (psi / kPa)188.50 / 13178.40 / 12.30
High Pressure Cylinders (dia x stroke) (in / mm)15.5" x 22" / 394x559 (4)10.98" x 20" / 279x508 (4)
Tractive Effort (lbs / kg)33,875 / 15365.4618,282 / 8292.59
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.17 4.22
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)151 / 14.03127.98 / 11.89
Grate Area (sq ft / m2)34 / 3.1630.25 / 2.81
Evaporative Heating Surface (sq ft / m2)1696 / 157.56920 / 85.50
Superheating Surface (sq ft / m2)335 / 31.12182 / 16.91
Combined Heating Surface (sq ft / m2)2031 / 188.681102 / 102.41
Evaporative Heating Surface/Cylinder Volume176.50209.87
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation64095397
Same as above plus superheater percentage74346314
Same as above but substitute firebox area for grate area33,01826,713
Power L189358676
Power MT837.67991.54

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