Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 24, p. 127 and Volume 30, p. . Works numbers were 19849 in December 1901 and 29172 in December 1906.
Cromwell, soon given number 4, remained on the EBT all of its days, operating for more then 30 years before being retired in December 1934. #10 was newer but had only a short career on the EBT. In 1913, the Ohio River & Western bought the engine and ran it until the road closed in 1931; at that point, it was scrapped.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Cromwell |
| Locobase ID | 11432 |
| Railroad | East Broad Top R & C |
| Country | USA |
| Whyte | 4-6-0 |
| Number in Class | 2 |
| Road Numbers | 4, 10 |
| Gauge | 3' |
| Number Built | 2 |
| Builder | Burnham, Williams & Co |
| Year | 1901 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 12.50 / 3.81 |
| Engine Wheelbase (ft / m) | 21.83 / 6.65 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.57 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 60,000 / 27,216 |
| Engine Weight (lbs / kg) | 80,000 / 36,287 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 2500 / 9.47 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 33 / 16.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 48 / 1219 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 20" / 406x508 |
| Tractive Effort (lbs / kg) | 14,507 / 6580.27 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.14 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 152 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 11.79 / 3.59 |
| Firebox Area (sq ft / m2) | 87.50 / 8.13 |
| Grate Area (sq ft / m2) | 13.69 / 1.27 |
| Evaporative Heating Surface (sq ft / m2) | 1018 / 94.61 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1018 / 94.61 |
| Evaporative Heating Surface/Cylinder Volume | 218.92 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2190 |
| Same as above plus superheater percentage | 2190 |
| Same as above but substitute firebox area for grate area | 14,000 |
| Power L1 | 4007 |
| Power MT | 441.70 |