Data from Vulcan Foundry catalogue, as reproduced on [] (26 November 2004); and "Bogie Tank Passenger Engine and Tender for the Central Uruguay Railway", Vulcan Foundry Locomotive Catalogue, No. 28, found on Flicker's Historical Locomotive Images website at [
]. (Many thanks to Jorge Cerezo Toledo for his 26 June 2021 email containing links to several sites including the Vulcan Catalogue referred to above.) Works numbers were 2830-2835.
The catalogue illustration shows a balanced suburban tank with short side tanks, large cab, Belpaire firebox, dome centered on the boiler, and a capped stack.
Principal Dimensions by Steve Llanso of Middle Run Media | |
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Class | 38 |
Locobase ID | 6372 |
Railroad | Central Uruguay |
Country | Uruguay |
Whyte | 4-4-4T |
Number in Class | 6 |
Road Numbers | 38-43 |
Gauge | Std |
Number Built | 6 |
Builder | Vulcan Foundry |
Year | 1913 |
Valve Gear | Walschaert |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 7 / 2.13 |
Engine Wheelbase (ft / m) | 29.71 / 9.06 |
Ratio of driving wheelbase to overall engine wheelbase | 0.24 |
Overall Wheelbase (engine & tender) (ft / m) | 29.71 / 9.06 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | 68,320 / 30,989 |
Engine Weight (lbs / kg) | 139,440 / 63,249 |
Tender Loaded Weight (lbs / kg) | |
Total Engine and Tender Weight (lbs / kg) | |
Tender Water Capacity (gals / ML) | 1980 / 7.50 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 3.40 / 3.10 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 57 / 28.50 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 60 / 1524 |
Boiler Pressure (psi / kPa) | 160 / 1100 |
High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 24" / 406x610 |
Tractive Effort (lbs / kg) | 13,926 / 6316.73 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.91 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 171 - 1.875" / 48 |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | 10.35 / 3.15 |
Firebox Area (sq ft / m2) | 94 / 8.73 |
Grate Area (sq ft / m2) | 17.50 / 1.63 |
Evaporative Heating Surface (sq ft / m2) | 963 / 89.47 |
Superheating Surface (sq ft / m2) | 205 / 19.04 |
Combined Heating Surface (sq ft / m2) | 1168 / 108.51 |
Evaporative Heating Surface/Cylinder Volume | 172.42 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 2800 |
Same as above plus superheater percentage | 3304 |
Same as above but substitute firebox area for grate area | 17,747 |
Power L1 | 9391 |
Power MT | 606.08 |