Locobase has to say that if a locomotive can be "cute", the engines in this D, SP & P octet (works #4917, 4919, 4926, 4930, 4950-4951, 4955, 4957) had dimples in their smokeboxes.
When the C & S took over the UP, D & G in 1899, 7 of the 8 were taken over and renumbered 30-36. Three years earlier, 53 was sold to M L Davis Lumber as their #4.
Baldwin works # was 15139-15141. This locomotive passed through several railroads. It started on the Union Pacific, Denver & Gulf , sent to the Trinity & Brazos Valley in 1900, then to the Colorado & Southern from which road the latter two were scrapped in the 1930s. 425 was sold to the Wichita Valley as their #8 in 1907, where it ran until May 1934.
| Specifications | ||
|---|---|---|
| Class | B-4-A - BLW | B-4-L |
| Locobase ID | 7683 | 7365 |
| Railroad | Denver, South Park & Pacific (C & S) | Colorado & Southern (C & S) |
| Whyte | 2-8-0 | 2-8-0 |
| Road Numbers | 50-57 | 25-27 / 100-02 / 419-21 |
| Gauge | 3' | Std |
| Builder | Burnham, Parry, Williams & Co | Burnham, Williams & Co |
| Year | 1880 | 1897 |
| Valve Gear | Stephenson | Stephenson |
| Locomotive Length and Weight | ||
| Driver Wheelbase | 11.33' | 15' |
| Engine Wheelbase | 17.83' | 22.58' |
| Ratio of driving wheelbase to overall engine wheebase | 0.64 | 0.66 |
| Overall Wheelbase (engine & tender) | 41.08' | 51.17' |
| Axle Loading (Maximum Weight per Axle) | 13830 lbs | |
| Weight on Drivers | 53748 lbs | 123400 lbs |
| Engine Weight | 61748 lbs | 138300 lbs |
| Tender Light Weight | 45933 lbs | 119000 lbs |
| Total Engine and Tender Weight | 107681 lbs | 257300 lbs |
| Tender Water Capacity | 1600 gals | 6000 gals |
| Tender Fuel Capacity (oil/coal) | 5 tons | 14 tons |
| Minimum weight per yard of rail on which locomotive could run | 22.39 lb rail | 51.42 lb rail |
| Geometry Relating to Tractive Effort | ||
| Driver Diameter | 37" | 51" |
| Boiler Pressure | 150 psi | 165 psi |
| Cylinders (dia x stroke) | 15" x 18" | 20" x 24" |
| Tractive Effort | 13956 lbs | 26400 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.85 | 4.67 |
| Heating Ability | ||
| Firebox Area | 93.50 sq. ft | 168.70 sq. ft |
| Grate Area | 13.80 sq. ft | 24.80 sq. ft |
| Evaporative Heating Surface | 816 | 2102 |
| Superheating Surface | ||
| Combined Heating Surface | 816 | 2102 |
| Evaporative Heating Surface/Cylinder Volume | 221.65 | 240.87 |
| Computations Relating to Power Output (More Information) | ||
| Robert LeMassena's Power Computation | 2070 | 4092 |
| Same as above plus superheater percentage | 2070 | 4092 |
| Same as above but substitute firebox area for grate area | 14025 | 27835.50 |
| Power L1 | 3224.83 | 4733.85 |
| Power MT | 529.10 | 338.29 |
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