Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 31, p. 172. Works number was 32612 in January 1908.
Isle Royale Copper Company was incorporated in 1899 to merge the Isle Royale Consolidated Mining Company and the Miners Copper Company. The amalgamated entity had mines in Houghton County in Michigan's Upper Peninsula. The 5-mile (8-km) railway joined the mine and its mills with a junction with the Duluth, South Shore & Atlantic and sported relatively gentle 9-degree (417 ft/127 metres radius) curves, but relatively severe 4% grades on 60-70 lb/yard (30-35 kg/metre) rails.
A "Hereafter" note recorded more than seven years later (19 May 1915) asked that the "Spring links to be strengthened, as those on 8 34 D402 have been breaking."
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 3 |
| Locobase ID | 13259 |
| Railroad | Isle Royale Copper Company |
| Country | USA |
| Whyte | 2-6-0 |
| Number in Class | 1 |
| Road Numbers | 3 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Burnham, Williams & Co |
| Year | 1908 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 11.17 / 3.40 |
| Engine Wheelbase (ft / m) | 19.33 / 5.89 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.58 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 130,000 / 58,967 |
| Engine Weight (lbs / kg) | 145,000 / 65,771 |
| Tender Loaded Weight (lbs / kg) | 100,000 / 45,359 |
| Total Engine and Tender Weight (lbs / kg) | 245,000 / 111,130 |
| Tender Water Capacity (gals / ML) | 5000 / 18.94 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 72 / 36 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 52 / 1321 |
| Boiler Pressure (psi / kPa) | 200 / 1380 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 20" x 26" / 508x660 |
| Tractive Effort (lbs / kg) | 34,000 / 15422.16 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.82 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 290 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.98 / 3.35 |
| Firebox Area (sq ft / m2) | 178 / 16.54 |
| Grate Area (sq ft / m2) | 24.70 / 2.29 |
| Evaporative Heating Surface (sq ft / m2) | 1831 / 170.10 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1831 / 170.10 |
| Evaporative Heating Surface/Cylinder Volume | 193.76 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 4940 |
| Same as above plus superheater percentage | 4940 |
| Same as above but substitute firebox area for grate area | 35,600 |
| Power L1 | 4991 |
| Power MT | 253.92 |