King Ryder Lumber Company 2-6-2 "Prairie" Locomotives in the USA
Class Details by Steve Llanso of Sweat House Media
Class 48 (Locobase 11009)
Data from "Logging Locomotives", Record of Recent Construction #96 (Baldwin Locomotive Works, 1918), p. 12-13; and DeGolyer, Vol 62, pp. 360+. Works number was 51941 in June 1919. See [
] for more information on Bon Ami.
Bon Ami, Louisiana was the headquarters of the KR Lumber Company which lumbered in southwestern La until the mid-1920s. This cabbage-stacker ran on wood, of which 3 1/2 cords filled the tender.
When the mill closed, the railroad did too and presumably the 48 went off to other work as well.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 48 |
| Locobase ID | 11009 |
| Railroad | King Ryder Lumber Company |
| Country | USA |
| Whyte | 2-6-2 |
| Number in Class | 1 |
| Road Numbers | 48 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1919 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 9.17 / 2.80 |
| Engine Wheelbase (ft / m) | 23.75 / 7.24 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.39 |
| Overall Wheelbase (engine & tender) (ft / m) | 47.94 / 14.61 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 62,000 / 28,123 |
| Engine Weight (lbs / kg) | 84,000 / 38,102 |
| Tender Loaded Weight (lbs / kg) | 80,000 / 36,287 |
| Total Engine and Tender Weight (lbs / kg) | 164,000 / 74,389 |
| Tender Water Capacity (gals / ML) | 4000 / 15.15 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 34 / 17 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 46 / 1168 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 15" x 20" / 381x508 |
| Tractive Effort (lbs / kg) | 14,967 / 6788.93 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.14 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 147 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 11.87 / 3.62 |
| Firebox Area (sq ft / m2) | 83 / 7.71 |
| Grate Area (sq ft / m2) | 13.70 / 1.27 |
| Evaporative Heating Surface (sq ft / m2) | 991 / 92.10 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 991 / 92.10 |
| Evaporative Heating Surface/Cylinder Volume | 242.30 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2466 |
| Same as above plus superheater percentage | 2466 |
| Same as above but substitute firebox area for grate area | 14,940 |
| Power L1 | 4744 |
| Power MT | 506.07 |