A L Clark Lumber Company 2-6-2 "Prairie" Locomotives in the USA
Class Details by Steve Llanso of Sweat House Media
Class 3 (Locobase 11727)
Data from Negative 4827, Southern Methodist University, Central University Libraries, DeGolyer Library collection of digitized Baldwin images, retrieved 26 October 2010 from [
] . Works number was 41016 in December 1913.
Another of a widely distributed set of Baldwin logging Prairies. A L Clark operated the 3 for a while near Glenwood, Ark, then sold it to White Grandin Lumber Company of Grandin, Mo..
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 3 |
| Locobase ID | 11727 |
| Railroad | A L Clark Lumber Company |
| Country | USA |
| Whyte | 2-6-2 |
| Number in Class | 1 |
| Road Numbers | 3 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1913 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 10 / 3.05 |
| Engine Wheelbase (ft / m) | 25.25 / 7.70 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.40 |
| Overall Wheelbase (engine & tender) (ft / m) | 46.83 / 14.27 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 77,000 / 34,927 |
| Engine Weight (lbs / kg) | 101,000 / 45,813 |
| Tender Loaded Weight (lbs / kg) | 69,000 / 31,298 |
| Total Engine and Tender Weight (lbs / kg) | 170,000 / 77,111 |
| Tender Water Capacity (gals / ML) | 3500 / 13.26 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 6 / 6 |
| 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) | 170 / 1170 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 24" / 406x610 |
| Tractive Effort (lbs / kg) | 20,177 / 9152.14 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.82 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 215 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 13.54 / 4.13 |
| Firebox Area (sq ft / m2) | 88 / 8.18 |
| Grate Area (sq ft / m2) | 14.40 / 1.34 |
| Evaporative Heating Surface (sq ft / m2) | 1603 / 148.98 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1603 / 148.98 |
| Evaporative Heating Surface/Cylinder Volume | 286.76 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2448 |
| Same as above plus superheater percentage | 2448 |
| Same as above but substitute firebox area for grate area | 14,960 |
| Power L1 | 4556 |
| Power MT | 391.33 |