Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 13, p. 83. Works number was 8058 in July 1886
Begun as a 38"-gauge railroad, but widened to standard gauge even as this little locomotive was ordred, the DBC & A was the first common-carrier railroad to serve the northern Michigan city of Alpena. It connected two Lake Huron towns 47 miles apart: Bay City, at the curve between Michigan's "thumb" and the (left) "mitten", and Alpena, near the top of the "index finger" in the mitten. Including its other lines, the total measured 83 miles, all of which was standard gauge by the end of 1886.
Falling into receivership in 1893, as many railroads did during that Panic year, the DBC & A reemerged as the Detroit & Mackinac Railway.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 12 |
| Locobase ID | 11852 |
| Railroad | Detroit, Bay City & Alpena |
| Country | USA |
| Whyte | 2-4-0 |
| Number in Class | 1 |
| Road Numbers | 12 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Burnham, Parry, Williams & Co |
| Year | 1886 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 7.50 / 2.29 |
| Engine Wheelbase (ft / m) | 15.17 / 4.62 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.49 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 43,000 / 19,504 |
| Engine Weight (lbs / kg) | 52,000 / 23,587 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1600 / 6.06 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 36 / 18 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 44 / 1118 |
| Boiler Pressure (psi / kPa) | 140 / 970 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 14" x 22" / 356x559 |
| Tractive Effort (lbs / kg) | 11,662 / 5289.80 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.69 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 160 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 8.46 / 2.58 |
| Firebox Area (sq ft / m2) | 76 / 7.06 |
| Grate Area (sq ft / m2) | 15 / 1.39 |
| Evaporative Heating Surface (sq ft / m2) | 690 / 64.13 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 690 / 64.13 |
| Evaporative Heating Surface/Cylinder Volume | 176.02 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2100 |
| Same as above plus superheater percentage | 2100 |
| Same as above but substitute firebox area for grate area | 10,640 |
| Power L1 | 2802 |
| Power MT | 287.32 |