Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 24, p. 290. Works numbers were 20574-20575, 20600-20601 in June 1902; 22464, 22472, 22485, 22487 in July 1903; 24384-24385 in June 1904.
During the brief North American infatuation with the Prairie wheel arrangement for express passenger locomotives, the Lehigh Valley bought the only camelback 2-6-2s. And they didn't skimp, adopting a large grate and big boiler for the relatively small cylinder volume.
They were rebuilt in 1906 with a four-wheel leading truck and redesignated K-2, thus following the trend toward use of the Pacific wheel arrangement.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | I-1 |
| Locobase ID | 12614 |
| Railroad | Lehigh Valley (LV) |
| Country | USA |
| Whyte | 2-6-2 |
| Number in Class | 10 |
| Road Numbers | 790-799 / 2230-2239 |
| Gauge | Std |
| Number Built | 10 |
| Builder | Burnham, Williams & Co |
| Year | 1902 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 13.50 / 4.11 |
| Engine Wheelbase (ft / m) | 31.25 / 9.52 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.43 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 135,000 / 61,235 |
| Engine Weight (lbs / kg) | 200,000 / 90,719 |
| Tender Loaded Weight (lbs / kg) | 130,000 / 58,967 |
| Total Engine and Tender Weight (lbs / kg) | 330,000 / 149,686 |
| Tender Water Capacity (gals / ML) | 6500 / 24.62 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 75 / 37.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 76.50 / 1943 |
| Boiler Pressure (psi / kPa) | 200 / 1380 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 22" x 26" / 559x660 |
| Tractive Effort (lbs / kg) | 27,964 / 12684.27 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.83 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 295 - 2.25" / 57 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 20 / 6.10 |
| Firebox Area (sq ft / m2) | 212.80 / 19.78 |
| Grate Area (sq ft / m2) | 87.70 / 8.15 |
| Evaporative Heating Surface (sq ft / m2) | 3670 / 341.08 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 3670 / 341.08 |
| Evaporative Heating Surface/Cylinder Volume | 320.80 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 17,540 |
| Same as above plus superheater percentage | 17,540 |
| Same as above but substitute firebox area for grate area | 42,560 |
| Power L1 | 10,552 |
| Power MT | 516.96 |