According to George Drury (1993), these were the last three Americans built for any railroad in North America. Yet, as Drury notes, this purchase wasn't a fluke. The railroad still ran a Springfield-Peoria passenger service daily and even upgraded its passenger car fleet by buying 6 steel passenger cars. The three locomotives provided enough power for the trains on the schedule and could even be double-headed in a pinch.
By the late 1940s, passenger traffic had withered and 501 was sold for scrap. The last passenger train ran in 1953 and the surviving pair of 4-4-0s went to the scrapyard as well.
| Specifications | |
|---|---|
| Class | A-1 |
| Locobase ID | 7651 |
| Railroad | Chicago & Illinois Midland |
| Whyte | 4-4-0 |
| Road Numbers | 500-502 |
| Gauge | Std |
| Builder | Baldwin |
| Year | 1927 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase | 7' |
| Engine Wheelbase | 21.33' |
| Ratio of driving wheelbase to overall engine wheebase | 0.33 |
| Overall Wheelbase (engine & tender) | 47.92' |
| Axle Loading (Maximum Weight per Axle) | |
| Weight on Drivers | 77400 lbs |
| Engine Weight | 118400 lbs |
| Tender Light Weight | 109960 lbs |
| Total Engine and Tender Weight | 228360 lbs |
| Tender Water Capacity | 4500 gals |
| Tender Fuel Capacity (oil/coal) | 10 tons |
| Minimum weight per yard of rail on which locomotive could run | 65 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 64" |
| Boiler Pressure | 180 psi |
| Cylinders (dia x stroke) | 18" x 24" |
| Tractive Effort | 18590 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.16 |
| Heating Ability | |
| Firebox Area | 113 sq. ft |
| Grate Area | 22.20 sq. ft |
| Evaporative Heating Surface | 1170 |
| Superheating Surface | 227 |
| Combined Heating Surface | 1397 |
| Evaporative Heating Surface/Cylinder Volume | 165.52 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3996 |
| Same as above plus superheater percentage | 4795 |
| Same as above but substitute firebox area for grate area | 24408 |
| Power L1 | 10262 |
| Power MT | 584.59 |
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