According to Nicholas Muff's outline on http://www.rr-fallenflags.org/L&A, these locomotives were used primarily for yard duty. The superheater area is estimated because the diagram doesn't show a separate superheater area, but several other Locobase entries with similar flue lengths and flue counts show the area given.
| Specifications | |
|---|---|
| Class | 90 |
| Locobase ID | 6157 |
| Railroad | Louisiana Railway & Navigation |
| Whyte | 2-8-0 |
| Road Numbers | 90-91, 98-99 |
| Gauge | Std |
| Builder | Baldwin |
| Year | 1912 |
| Valve Gear | Stevens |
| Locomotive Length and Weight | |
| Driver Wheelbase | 14.17' |
| Engine Wheelbase | 21.83' |
| Ratio of driving wheelbase to overall engine wheebase | 0.65 |
| Overall Wheelbase (engine & tender) | 60.17' |
| Axle Loading (Maximum Weight per Axle) | |
| Weight on Drivers | 140600 lbs |
| Engine Weight | 156400 lbs |
| Tender Light Weight | 118600 lbs |
| Total Engine and Tender Weight | 275000 lbs |
| Tender Water Capacity | 7000 gals |
| Tender Fuel Capacity (oil/coal) | 2365 gals |
| Minimum weight per yard of rail on which locomotive could run | 58.58 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 51" |
| Boiler Pressure | 180 psi |
| Cylinders (dia x stroke) | 20" x 26" |
| Tractive Effort | 31200 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.51 |
| Heating Ability | |
| Firebox Area | 168 sq. ft |
| Grate Area | 31.40 sq. ft |
| Evaporative Heating Surface | 1671 |
| Superheating Surface | 340 |
| Combined Heating Surface | 2011 |
| Evaporative Heating Surface/Cylinder Volume | 176.75 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 5652 |
| Same as above plus superheater percentage | 6607.58 |
| Same as above but substitute firebox area for grate area | 35352.68 |
| Power L1 | 9016.03 |
| Power MT | 565.49 |
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