John S Ingles (in Drury (1993)) tells us that this locomotive was procured to be compared against a single Atlantic delivered by Baldwin in the same year. After a year of trials, the Atlantic layout won, but Rogers produced the batch. This single Prairie was converted into a 4-6-2 and took the number of the experimental Atlantic. At the same
| Specifications | |
|---|---|
| Class | 1001 |
| Locobase ID | 5327 |
| Railroad | Illinois Central (IC) |
| Whyte | 2-6-2 |
| Road Numbers | 1001 |
| Gauge | Std |
| Builder | Rogers |
| Year | 1902 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase | 13.50' |
| Engine Wheelbase | 30.75' |
| Ratio of driving wheelbase to overall engine wheebase | 0.44 |
| Overall Wheelbase (engine & tender) | 62.12' |
| Axle Loading (Maximum Weight per Axle) | |
| Weight on Drivers | 140200 lbs |
| Engine Weight | 210800 lbs |
| Tender Light Weight | 147600 lbs |
| Total Engine and Tender Weight | 358400 lbs |
| Tender Water Capacity | 7000 gals |
| Tender Fuel Capacity (oil/coal) | 15 tons |
| Minimum weight per yard of rail on which locomotive could run | 77.89 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 75" |
| Boiler Pressure | 200 psi |
| Cylinders (dia x stroke) | 20" x 28" |
| Tractive Effort | 25387 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.52 |
| Heating Ability | |
| Firebox Area | 201 sq. ft |
| Grate Area | 51 sq. ft |
| Evaporative Heating Surface | 3534 |
| Superheating Surface | |
| Combined Heating Surface | 3534 |
| Evaporative Heating Surface/Cylinder Volume | 347.11 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 10200 |
| Same as above plus superheater percentage | 10200 |
| Same as above but substitute firebox area for grate area | 40200 |
| Power L1 | 11145.67 |
| Power MT | 525.79 |
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