Data from DeGolyer, Volume 29, p. 305. Works number was 31122 in June 1907.
Coharie Lumber's railroad offered some challenges to even the smallest logging engine. This locomotive used a boiler similar to some 6-wheel saddle tanks, but rolled on 4 axles instead of 3 because of the 30-lb/yard (15-kg/metre) rail. It was required to haul 125 short tons of train up a grade of 79 ft/mile (1.5%).
The 1 was later sold to the Ford Lumber & Supply Company.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 1 |
| Locobase ID | 13048 |
| Railroad | Coharie Lumber Company |
| Country | USA |
| Whyte | 2-4-2ST |
| Number in Class | 1 |
| Road Numbers | 1 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Burnham, Williams & Co |
| Year | 1907 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 5 / 1.52 |
| Engine Wheelbase (ft / m) | 15.92 / 4.85 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.31 |
| Overall Wheelbase (engine & tender) (ft / m) | 15.92 / 4.85 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 25,000 / 11,340 |
| Engine Weight (lbs / kg) | 36,000 / 16,329 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 400 / 1.52 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 21 / 10.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 36 / 914 |
| Boiler Pressure (psi / kPa) | 170 / 1170 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 10" x 14" / 254x356 |
| Tractive Effort (lbs / kg) | 5619 / 2548.74 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.45 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 74 - 1.5" / 38 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 7.67 / 2.34 |
| Firebox Area (sq ft / m2) | 37 / 3.44 |
| Grate Area (sq ft / m2) | 7.80 / 0.72 |
| Evaporative Heating Surface (sq ft / m2) | 257 / 23.88 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 257 / 23.88 |
| Evaporative Heating Surface/Cylinder Volume | 202.36 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1326 |
| Same as above plus superheater percentage | 1326 |
| Same as above but substitute firebox area for grate area | 6290 |
| Power L1 | 3550 |
| Power MT | 626.11 |