Data from TC 1941ca Locomotive Diagrams and Miscellaneous Data supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.
Locobase knows that these Ten-wheelers were delivered as saturated-steam engines in 1903. At some later date they were superheated as shown here. A note in the diagram says that the superheater area includes the arch tube area, a calculation Locobase hasn't seen before.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 504 |
| Locobase ID | 7346 |
| Railroad | Tennessee Central |
| Country | USA |
| Whyte | 4-6-0 |
| Number in Class | 3 |
| Road Numbers | 504-506 |
| Gauge | Std |
| Number Built | 3 |
| Builder | Alco-Rhode Island |
| Year | 1903 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 14.50 / 4.42 |
| Engine Wheelbase (ft / m) | 25.67 / 7.82 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.56 |
| Overall Wheelbase (engine & tender) (ft / m) | 58.02 / 17.68 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 126,500 / 57,380 |
| Engine Weight (lbs / kg) | 172,500 / 78,245 |
| Tender Loaded Weight (lbs / kg) | 107,200 / 48,625 |
| Total Engine and Tender Weight (lbs / kg) | 279,700 / 126,870 |
| Tender Water Capacity (gals / ML) | 7000 / 26.52 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 10 / 9 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 70 / 35 |
| 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) | 20" x 26" / 508x660 |
| Tractive Effort (lbs / kg) | 25,257 / 11456.40 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.01 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 161 - 2" / 51 |
| Flues (number - dia) (in / mm) | 24 - 5.375" / 137 |
| Flue/Tube length (ft / m) | 14 / 4.27 |
| Firebox Area (sq ft / m2) | 157 / 14.59 |
| Grate Area (sq ft / m2) | 32.15 / 2.99 |
| Evaporative Heating Surface (sq ft / m2) | 2094 / 194.61 |
| Superheating Surface (sq ft / m2) | 456 / 42.38 |
| Combined Heating Surface (sq ft / m2) | 2550 / 236.99 |
| Evaporative Heating Surface/Cylinder Volume | 221.59 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 5787 |
| Same as above plus superheater percentage | 6829 |
| Same as above but substitute firebox area for grate area | 33,347 |
| Power L1 | 13,966 |
| Power MT | 730.19 |