Data from Volume 24, p.115. See also DeGolyer, Volume 24, p. 115; and Richard E Prince, Seaboard Air Line Railway: Steam Boats, Locomotives, and History (Indiana University Press, 1969), pp. 103-106. Works numbers were 19735, 19766-19767 in November; 21578 in January 1901, 21624 in February.
Remarkably, the MD&S did not actually merge with the Seaboard Air Line until 1958. The road, which began construction south from Macon in 1885 toward Savannah, reached Dublin in 1891, but never grew longer than the 92 miles (148 km) between Macon and Vidalia. The southeastern end of the track gave the railroad its nickname of The Vidalia Line.
These Ten-wheel freighters were the only MD & S engines to be bought new (except for one 4-4-0 in 1909). They
Several other southeastern railroads would operate essentially identical locomotives; see Locobases 9349, 12824, 12839, and 12840. Locobase 8343 shows another of the same design at work in the Pacific Northwest.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 104 |
| Locobase ID | 12572 |
| Railroad | Macon, Dublin & Savannah |
| Country | USA |
| Whyte | 4-6-0 |
| Number in Class | 5 |
| Road Numbers | 104-108 |
| Gauge | Std |
| Number Built | 5 |
| Builder | Burnham, Williams & Co |
| Year | 1901 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 11.33 / 3.45 |
| Engine Wheelbase (ft / m) | 22.17 / 6.58 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.51 |
| Overall Wheelbase (engine & tender) (ft / m) | / 14.21 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 92,500 / 41,957 |
| Engine Weight (lbs / kg) | 116,500 / 52,844 |
| Tender Loaded Weight (lbs / kg) | 75,000 / 3629 |
| Total Engine and Tender Weight (lbs / kg) | 191,500 / 56,473 |
| Tender Water Capacity (gals / ML) | 4000 / 15.15 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 4 / 4 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 51 / 25.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 56 / 1422 |
| Boiler Pressure (psi / kPa) | 190 / 1310 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 26" / 457x660 |
| Tractive Effort (lbs / kg) | 24,294 / 11019.59 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.81 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 260 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 13.08 / 3.99 |
| Firebox Area (sq ft / m2) | 152 / 14.13 |
| Grate Area (sq ft / m2) | 22.40 / 2.08 |
| Evaporative Heating Surface (sq ft / m2) | 1920 / 178.44 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1920 / 178.44 |
| Evaporative Heating Surface/Cylinder Volume | 250.65 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 4256 |
| Same as above plus superheater percentage | 4256 |
| Same as above but substitute firebox area for grate area | 28,880 |
| Power L1 | 6204 |
| Power MT | 443.59 |