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.
| Specifications | |
|---|---|
| Class | 504 |
| Locobase ID | 7346 |
| Railroad | Tennessee Central |
| Whyte | 4-6-0 |
| Road Numbers | 504-506 |
| Gauge | Std |
| Builder | Alco-Rhode Island |
| Year | 1903 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase | 14.50' |
| Engine Wheelbase | 25.67' |
| Ratio of driving wheelbase to overall engine wheebase | 0.56 |
| Overall Wheelbase (engine & tender) | 58.02' |
| Axle Loading (Maximum Weight per Axle) | |
| Weight on Drivers | 126500 lbs |
| Engine Weight | 172500 lbs |
| Tender Light Weight | 107200 lbs |
| Total Engine and Tender Weight | 279700 lbs |
| Tender Water Capacity | 7000 gals |
| Tender Fuel Capacity (oil/coal) | 10 tons |
| Minimum weight per yard of rail on which locomotive could run | 70.28 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 63" |
| Boiler Pressure | 180 psi |
| Cylinders (dia x stroke) | 20" x 26" |
| Tractive Effort | 25257 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.01 |
| Heating Ability | |
| Firebox Area | 157 sq. ft |
| Grate Area | 32.15 sq. ft |
| Evaporative Heating Surface | 2094 |
| Superheating Surface | 456 |
| Combined Heating Surface | 2550 |
| Evaporative Heating Surface/Cylinder Volume | 221.50 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 5787 |
| Same as above plus superheater percentage | 6821.85 |
| Same as above but substitute firebox area for grate area | 33313.55 |
| Power L1 | 13960.29 |
| Power MT | 729.89 |
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