Data from the SA&AP 6 - 1917 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works numbers were 1372-1375 in October 1892, 1451 in April 1893, 1489-1490 in November
These joined Rome-built Moguls that were built in the same year to very nearly identical specs,
In their second careers, these 2-6-0s came onto the SA&AP years after their first service with the Hocking Valley. 156-162 arrived in 1910, 165-166 a year later. (See Locobase 7235 for a description of this SouthEast Texas railroad.)
Seven survived to be renumbered as Texas & New Orleans engines in the Southern Pacific systems.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 7/156/M-16 |
| Locobase ID | 7244 |
| Railroad | Columbus, Hocking Valley & Toledo |
| Country | USA |
| Whyte | 2-6-0 |
| Number in Class | 7 |
| Road Numbers | 156-162, 165-166/488-494 |
| Gauge | Std |
| Number Built | 7 |
| Builder | Pittsburgh |
| Year | 1898 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 15.42 / 4.70 |
| Engine Wheelbase (ft / m) | 23.42 / 7.14 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.66 |
| Overall Wheelbase (engine & tender) (ft / m) | 54.37 / 16.57 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 101,850 / 46,198 |
| Engine Weight (lbs / kg) | 119,670 / 54,281 |
| Tender Loaded Weight (lbs / kg) | 102,920 / 46,684 |
| Total Engine and Tender Weight (lbs / kg) | 222,590 / 100,965 |
| Tender Water Capacity (gals / ML) | 3800 / 14.39 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1430 / 5413 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 57 / 28.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 55 / 1397 |
| Boiler Pressure (psi / kPa) | 150 / 1030 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 19" x 24" / 483x610 |
| Tractive Effort (lbs / kg) | 20,085 / 9110.41 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.07 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 229 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 11.08 / 3.38 |
| Firebox Area (sq ft / m2) | 134 / 12.45 |
| Grate Area (sq ft / m2) | 18 / 1.67 |
| Evaporative Heating Surface (sq ft / m2) | 1532 / 142.38 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1532 / 142.38 |
| Evaporative Heating Surface/Cylinder Volume | 194.42 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2700 |
| Same as above plus superheater percentage | 2700 |
| Same as above but substitute firebox area for grate area | 20,100 |
| Power L1 | 3842 |
| Power MT | 249.49 |