Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University,Vol 78, pp. 262+. Works numbers were 58341-58342 in April 1925.
See Locobase 15397 for a description of this design. These and two others shown in Locobse 15396 were built as part of a large order of locomotives for the Sao Paulo Rio Grande.
Whatever the original reason for sending these two engines to LePrevost, they were delivered with consecutive numbers as part of the overall SPRG roster and would soon join that railway.
Principal Dimensions by Steve Llanso of Middle Run Media | |
---|---|
Class | 237 |
Locobase ID | 15398 |
Railroad | J LePrevost |
Country | Brazil |
Whyte | 2-8-2 |
Number in Class | 2 |
Road Numbers | 327-328 |
Gauge | Metre |
Number Built | 2 |
Builder | Baldwin |
Year | 1925 |
Valve Gear | Walschaert |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 11 / 3.35 |
Engine Wheelbase (ft / m) | 26.42 / 8.05 |
Ratio of driving wheelbase to overall engine wheelbase | 0.42 |
Overall Wheelbase (engine & tender) (ft / m) | 50.50 / 15.39 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 21,000 / 9525 |
Weight on Drivers (lbs / kg) | 79,500 / 36,061 |
Engine Weight (lbs / kg) | 110,500 / 50,122 |
Tender Loaded Weight (lbs / kg) | 58,500 / 26,535 |
Total Engine and Tender Weight (lbs / kg) | 169,000 / 76,657 |
Tender Water Capacity (gals / ML) | 2600 / 9.85 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 5.50 / 5 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 33 / 16.50 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 40 / 1016 |
Boiler Pressure (psi / kPa) | 180 / 1240 |
High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 20" / 406x508 |
Tractive Effort (lbs / kg) | 19,584 / 8883.16 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.06 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 100 - 2" / 51 |
Flues (number - dia) (in / mm) | 16 - 5.375" / 137 |
Flue/Tube length (ft / m) | 13 / 3.96 |
Firebox Area (sq ft / m2) | 152 / 14.12 |
Grate Area (sq ft / m2) | 38.20 / 3.55 |
Evaporative Heating Surface (sq ft / m2) | 1120 / 104.05 |
Superheating Surface (sq ft / m2) | 277 / 25.73 |
Combined Heating Surface (sq ft / m2) | 1397 / 129.78 |
Evaporative Heating Surface/Cylinder Volume | 240.64 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 6876 |
Same as above plus superheater percentage | 8251 |
Same as above but substitute firebox area for grate area | 32,832 |
Power L1 | 11,275 |
Power MT | 1250.67 |