Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 43, p. 217. Works number was 38948 in December 1912.
This very short Missouri shortline was incorporated in December 1889 to operate in the state's northwest. Its Rock Port terminus lay 5.6 miles to the north of Langdon, which was the junction point with the Chicago, Burlington & Quincy. .James H Hedgpeth ran the RPL&N from 1909 and soon increased revenue sufficiently to buy a brand-new saddletank engine.
After more than 55 years, the RPL&N closed on 11 November 1945.
Grandson J Pete Hedgpeth wrote a memoir entitled Five Miles of Family Ties.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 2 |
| Locobase ID | 14122 |
| Railroad | Rock Port, Langdon & Northern |
| Country | USA |
| Whyte | 2-4-2ST |
| Number in Class | 1 |
| Road Numbers | 2 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1912 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 6 / 1.83 |
| Engine Wheelbase (ft / m) | 20.17 / 6.15 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.30 |
| Overall Wheelbase (engine & tender) (ft / m) | 20.17 / 6.15 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 52,000 / 23,587 |
| Engine Weight (lbs / kg) | 72,000 / 32,659 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1000 / 3.79 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 43 / 21.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 44 / 1118 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 13" x 22" / 330x559 |
| Tractive Effort (lbs / kg) | 11,492 / 5212.69 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.52 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 116 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 9.67 / 2.95 |
| Firebox Area (sq ft / m2) | 60 / 5.57 |
| Grate Area (sq ft / m2) | 11.80 / 1.10 |
| Evaporative Heating Surface (sq ft / m2) | 642 / 59.64 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 642 / 59.64 |
| Evaporative Heating Surface/Cylinder Volume | 189.94 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1888 |
| Same as above plus superheater percentage | 1888 |
| Same as above but substitute firebox area for grate area | 9600 |
| Power L1 | 3270 |
| Power MT | 277.27 |