Locobase cannot match up this locomotive to a comprehensive list of Baldwin locomotives. He wonders if it was in fact built in 1903 and believes that that date is the acquisition date for the P & PU.
The diagram book says this little Eight-wheeler was built at the shops in 1915. Locobase wonders if it was instead a rebuild of an older locomotive. In any case, the result was small and light.
| Specifications | ||
|---|---|---|
| Class | B | B1 |
| Locobase ID | 8877 | 8882 |
| Railroad | Peoria & Pekin Union | Peoria & Pekin Union |
| Whyte | 4-4-0 | 4-4-0 |
| Road Numbers | 16 | 15 |
| Gauge | Std | Std |
| Builder | Burnham, Williams & Co | P & PU |
| Year | 1903 | 1915 |
| Valve Gear | Stephenson | Stephenson |
| Locomotive Length and Weight | ||
| Driver Wheelbase | 8.33' | 8.50' |
| Engine Wheelbase | 22.42' | 22.42' |
| Ratio of driving wheelbase to overall engine wheebase | 0.37 | 0.38 |
| Overall Wheelbase (engine & tender) | 44.24' | 51.71' |
| Axle Loading (Maximum Weight per Axle) | ||
| Weight on Drivers | 56000 lbs | 56100 lbs |
| Engine Weight | 86600 lbs | 86400 lbs |
| Tender Light Weight | 73700 lbs | 80000 lbs |
| Total Engine and Tender Weight | 160300 lbs | 166400 lbs |
| Tender Water Capacity | 3600 gals | 4100 gals |
| Tender Fuel Capacity (oil/coal) | 7 tons | 7.5 tons |
| Minimum weight per yard of rail on which locomotive could run | 47 lb rail | 47 lb rail |
| Geometry Relating to Tractive Effort | ||
| Driver Diameter | 63" | 63" |
| Boiler Pressure | 150 psi | 160 psi |
| Cylinders (dia x stroke) | 17" x 24" | 18" x 24" |
| Tractive Effort | 14037 lbs | 16786 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.99 | 3.34 |
| Heating Ability | ||
| Firebox Area | 125 sq. ft | 125.50 sq. ft |
| Grate Area | 17.25 sq. ft | 19.70 sq. ft |
| Evaporative Heating Surface | 1177 | 1118 |
| Superheating Surface | ||
| Combined Heating Surface | 1177 | 1118 |
| Evaporative Heating Surface/Cylinder Volume | 186.68 | 158.16 |
| Computations Relating to Power Output (More Information) | ||
| Robert LeMassena's Power Computation | 2588 | 3152 |
| Same as above plus superheater percentage | 2588 | 3152 |
| Same as above but substitute firebox area for grate area | 18750 | 20080 |
| Power L1 | 4501 | 4149 |
| Power MT | 354.39 | 326.10 |
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