This was the largest single class of Ten-wheelers on the RF & P. Although they were not superheated, the 101s only started retiring in 1930. Most were gone by the end of the decade, but a couple served through World War II.
According to Drury (1993), these Ten-wheelers reflected the RF & P's need to run freights nearly as fast as passenger trains. A 62" driver would satisfy both service requirements if the operator wasn't looking for express speeds.
Ever-larger and heavier trains meant these locomotives were no longer suitable and they were sold off in 1916-1923.
Although virtually identical to the 6 Richmond engines of a year earlier (Locobase 7116), these Baldwins had slightly smaller fireboxes and put 3 1/2 tons less weight on the drivers. Like the Richmonds, these were sold in 1916.
| Specifications | |||
|---|---|---|---|
| Class | 25 / 101 | 30 | 36 |
| Locobase ID | 7115 | 7116 | 7117 |
| Railroad | Richmond, Fredericksburg & Potomac | Richmond, Fredericksburg & Potomac | Richmond, Fredericksburg & Potomac |
| Whyte | 4-6-0 | 4-6-0 | 4-6-0 |
| Road Numbers | 25-29, 38-46 / 101-113 | 30-35 | 36-37 |
| Gauge | Std | Std | Std |
| Builder | Alco-Richmond | Richmond | Burnham, Williams & Co |
| Year | 1902 | 1900 | 1901 |
| Valve Gear | Stephenson | Stephenson | Stephenson |
| Locomotive Length and Weight | |||
| Driver Wheelbase | 13.50' | 13.50' | 13.50' |
| Engine Wheelbase | 24.33' | 24.33' | 24.33' |
| Ratio of driving wheelbase to overall engine wheebase | 0.55 | 0.55 | 0.55 |
| Overall Wheelbase (engine & tender) | 51.50' | 51.02' | 51.08' |
| Axle Loading (Maximum Weight per Axle) | |||
| Weight on Drivers | 107000 lbs | 107000 lbs | 100380 lbs |
| Engine Weight | 141700 lbs | 141700 lbs | 133180 lbs |
| Tender Light Weight | 79800 lbs | 79800 lbs | 80000 lbs |
| Total Engine and Tender Weight | 221500 lbs | 221500 lbs | 213180 lbs |
| Tender Water Capacity | 4500 gals | 4500 gals | 4500 gals |
| Tender Fuel Capacity (oil/coal) | 12 tons | 12 tons | 12 tons |
| Minimum weight per yard of rail on which locomotive could run | 59.44 lb rail | 59.44 lb rail | 55.77 lb rail |
| Geometry Relating to Tractive Effort | |||
| Driver Diameter | 62" | 62" | 62" |
| Boiler Pressure | 200 psi | 180 psi | 200 psi |
| Cylinders (dia x stroke) | 19" x 26" | 19" x 26" | 19" x 26" |
| Tractive Effort | 25736 lbs | 23162 lbs | 25736 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.16 | 4.62 | 3.90 |
| Heating Ability | |||
| Firebox Area | 160.80 sq. ft | 148 sq. ft | 153 sq. ft |
| Grate Area | 28.10 sq. ft | 28.09 sq. ft | 28 sq. ft |
| Evaporative Heating Surface | 2337 | 2151 | 2327 |
| Superheating Surface | |||
| Combined Heating Surface | 2337 | 2151 | 2327 |
| Evaporative Heating Surface/Cylinder Volume | 273.91 | 252.11 | 272.73 |
| Computations Relating to Power Output (More Information) | |||
| Robert LeMassena's Power Computation | 5620 | 5056.20 | 5600 |
| Same as above plus superheater percentage | 5620 | 5056.20 | 5600 |
| Same as above but substitute firebox area for grate area | 32160 | 26640 | 30600 |
| Power L1 | 7608.20 | 6302.38 | 7489.51 |
| Power MT | 470.28 | 389.56 | 493.47 |
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