Data from an Catalogue Descriptive of Simple and Compound Locomotives built by Brooks Locomotive Works, Dunkirk, NY (Buffalo, NY: Matthew-Northrup Company, 1899). Works number was 2968 in June 1898..
The DMR&N was probably the immediate predecessor of the Duluth, Missabe, and Northern, which was in turn absorbed by the Duluth & Iron Range to become, in 1901, the Duluth, Missabe, and Iron Range (DM&IR). This low-drivered engine probably operated in dual service hauling both the few passenger trains as well as light freight duties. As with many other Brooks engines, this design used the squared-up Belpaire firebox.
It didn't last long on the DMR&N, being sold to the Great Northern as their 991 in 1902. The GN quickly sold 991 to the Isaac Joseph Iron Co. on 28 November 1902. sometime after that this lone engine to the St. Louis, Memphis & Southeastern as its 698. The StLM&SE merged with the Frisco (St. Louis - San Francisco) in 1904, which renumbered the engine 2698.
From that point, the 2698 had a relatively stable career right up to its retirement and scrapping in 1927.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 9 |
| Locobase ID | 1226 |
| Railroad | Duluth, Mississippi River, & Northern |
| Country | USA |
| Whyte | 4-6-0 |
| Number in Class | 1 |
| Road Numbers | 9 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Brooks |
| Year | 1898 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 14 / 4.27 |
| Engine Wheelbase (ft / m) | 24.33 / 7.42 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.58 |
| Overall Wheelbase (engine & tender) (ft / m) | 54.10 / 16.49 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 97,800 / 44,361 |
| Engine Weight (lbs / kg) | 127,800 / 57,969 |
| Tender Loaded Weight (lbs / kg) | 85,000 / 38,555 |
| Total Engine and Tender Weight (lbs / kg) | 212,800 / 96,524 |
| Tender Water Capacity (gals / ML) | 4000 / 15.15 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 8.50 / 8 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 54 / 27 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 63 / 1600 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 24" / 457x610 |
| Tractive Effort (lbs / kg) | 18,885 / 8566.10 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.18 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 225 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 13.35 / 4.07 |
| Firebox Area (sq ft / m2) | 119 / 11.06 |
| Grate Area (sq ft / m2) | 20.92 / 1.94 |
| Evaporative Heating Surface (sq ft / m2) | 1681 / 156.23 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1681 / 156.23 |
| Evaporative Heating Surface/Cylinder Volume | 237.77 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3766 |
| Same as above plus superheater percentage | 3766 |
| Same as above but substitute firebox area for grate area | 21,420 |
| Power L1 | 6084 |
| Power MT | 411.44 |