Data from set of original DLW diagrams offered for sale on Ebay in March 2013.
The data for heating surface area and tube count or diameter are inconsistent. As laid out in the diagram, the evaporative heating surface area should add up to 1,458 sq ft.(135.45 sq m). It's possible that the tube diameter was actually 1 3/4" (44.5 mm), which would generate a total much closer to that given in the diagram.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | unknown |
| Locobase ID | 15090 |
| Railroad | Davenport stock |
| Country | USA |
| Whyte | 2-6-0 |
| Number in Class | 1 |
| Road Numbers | |
| Gauge | Std |
| Number Built | 1 |
| Builder | Davenport |
| Year | |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 14.50 / 4.42 |
| Engine Wheelbase (ft / m) | 22 / 6.71 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.66 |
| Overall Wheelbase (engine & tender) (ft / m) | 49.08 / 14.96 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 107,400 / 48,716 |
| Engine Weight (lbs / kg) | 124,800 / 56,608 |
| Tender Loaded Weight (lbs / kg) | 8000 / 3629 |
| Total Engine and Tender Weight (lbs / kg) | 132,800 / 60,237 |
| Tender Water Capacity (gals / ML) | 4000 / 15.15 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 6 / 6 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 60 / 30 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 54 / 1372 |
| Boiler Pressure (psi / kPa) | 170 / 1170 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 24" / 457x610 |
| Tractive Effort (lbs / kg) | 20,808 / 9438.36 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.16 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 208 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 12.17 / 3.71 |
| Firebox Area (sq ft / m2) | 133 / 12.36 |
| Grate Area (sq ft / m2) | 26.33 / 2.45 |
| Evaporative Heating Surface (sq ft / m2) | 1316 / 122.26 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1316 / 122.26 |
| Evaporative Heating Surface/Cylinder Volume | 186.14 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 4476 |
| Same as above plus superheater percentage | 4476 |
| Same as above but substitute firebox area for grate area | 22,610 |
| Power L1 | 4287 |
| Power MT | 264.00 |