Although highly praised in the article referenced above (as was almost always the case), this Vauclain compound discarded its LP cylinders and adopted two 19" x 26" simple-expansion cylinders within 3 years. By that time, the Fitchburg had come under the Boston & Maine's control, under which it served until it was scrapped in October 1937.
| Specifications | ||
|---|---|---|
| Class | 6 / C-19a | |
| Locobase ID | 3273 | 9499 |
| Railroad | Boston & Maine | Fitchburg (B & M) |
| Whyte | 4-6-0 | 4-6-0 |
| Road Numbers | 6 | |
| Gauge | Std | Std |
| Builder | Schenectady | Burnham, Williams & Co |
| Year | 1898 | 1898 |
| Valve Gear | Stephenson | Stephenson |
| Locomotive Length and Weight | ||
| Driver Wheelbase | 14' | 15.50' |
| Engine Wheelbase | 24.42' | 26.25' |
| Ratio of driving wheelbase to overall engine wheebase | 0.57 | 0.59 |
| Overall Wheelbase (engine & tender) | ||
| Axle Loading (Maximum Weight per Axle) | ||
| Weight on Drivers | 103000 lbs | 111000 lbs |
| Engine Weight | 141000 lbs | 150000 lbs |
| Tender Light Weight | ||
| Total Engine and Tender Weight | 0 | 341860 lbs |
| Tender Water Capacity | 4000 gals | |
| Tender Fuel Capacity (oil/coal) | 8 tons | tons |
| Minimum weight per yard of rail on which locomotive could run | 57.22 lb rail | 61.67 lb rail |
| Geometry Relating to Tractive Effort | ||
| Driver Diameter | 63" | 78" |
| Boiler Pressure | 200 psi | 200 psi |
| Cylinders (dia x stroke) | 21" x 26" (1) | 15" x 26" |
| Low Pressure Cylinders (dia x stroke) | 32" x 26" | 25" x 26" |
| Tractive Effort | 21626 lbs | 18750 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.76 | 5.92 |
| Heating Ability | ||
| Firebox Area | 141.40 sq. ft | 272 sq. ft |
| Grate Area | 27.39 sq. ft | 34.48 sq. ft |
| Evaporative Heating Surface | 1994 | 2748 |
| Superheating Surface | ||
| Combined Heating Surface | 1994 | 2748 |
| Evaporative Heating Surface/Cylinder Volume | 382.62 | 516.76 |
| Computations Relating to Power Output (More Information) | ||
| Robert LeMassena's Power Computation | 5478 | 6896 |
| Same as above plus superheater percentage | 5478 | 6896 |
| Same as above but substitute firebox area for grate area | 28280 | 54400 |
| Power L1 | 4687.32 | 7230.60 |
| Power MT | 300.98 | 430.83 |
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