Data from Exhibit of Locomotives by the Baldwin Locomotive Works (Philadelphia: J B Lippincott, 1893), pp. 54-57. See also DeGolyer, Volume 18, p. 111. Works numbers were 13009 in October 1892 and 13352 in April 1893.
Even among 30-inchers (the gauge, not the locomotives), this was a small engine, one of the smallest in Locobase. #7 was shown at the 1893 Columbian Exhibition.
The boiler was made by the company to whom it was delivered (or perhaps assigned for purposes of display).
Connelly's list tells us that both were sold, #6 to Tidewater Steel Company of Chester, Pa; it was later sold to Southern Iron & Equipment. #7 went to Hemenway & Brown, which delivered it to Chile.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 6 |
| Locobase ID | 11181 |
| Railroad | Wellman Iron & Steel |
| Country | USA |
| Whyte | 0-4-0ST |
| Number in Class | 2 |
| Road Numbers | 6-7 |
| Gauge | 2'6" |
| Number Built | 2 |
| Builder | Burnham, Williams & Co |
| Year | 1892 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 3.33 / 1.01 |
| Engine Wheelbase (ft / m) | 3.33 / 1.01 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | 3.33 / 1.01 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 14,150 / 6418 |
| Engine Weight (lbs / kg) | 14,150 / 6418 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 14,150 |
| Tender Water Capacity (gals / ML) | 130 / 0.49 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 12 / 6 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 26 / 660 |
| Boiler Pressure (psi / kPa) | 130 / 900 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 7" x 12" / 178x305 |
| Tractive Effort (lbs / kg) | 2499 / 1133.53 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.66 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 46 - 1.5" / 38 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 6.04 / 1.84 |
| Firebox Area (sq ft / m2) | 18.30 / 1.70 |
| Grate Area (sq ft / m2) | 3.81 / 0.35 |
| Evaporative Heating Surface (sq ft / m2) | 122 / 11.34 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 122 / 11.34 |
| Evaporative Heating Surface/Cylinder Volume | 230.19 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 495 |
| Same as above plus superheater percentage | 495 |
| Same as above but substitute firebox area for grate area | 2379 |
| Power L1 | 2269 |
| Power MT | 707.04 |