Considered by many observers to be the handsomest of the Challenger type. Forty engines -- 1500-1519 purchased in 1940 (builder's numbers 69297-69316), 1520-1534 (70006-70020) over next 2 years, and 1535-1539 (74666-74670) procured in 1946. All were disposed off in 10 months from October 1952 to August 1953.
| Specifications | |
|---|---|
| Class | J-95 |
| Locobase ID | 338 |
| Railroad | Delaware & Hudson |
| Whyte | 4-6-6-4 |
| Road Numbers | 1500-1539 |
| Gauge | Std |
| Builder | Alco-Schenectady |
| Year | 1940 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase | 12.17' |
| Engine Wheelbase | 59.92' |
| Ratio of driving wheelbase to overall engine wheebase | 0.20 |
| Overall Wheelbase (engine & tender) | |
| Axle Loading (Maximum Weight per Axle) | |
| Weight on Drivers | 406500 lbs |
| Engine Weight | 597000 lbs |
| Tender Light Weight | 311800 lbs |
| Total Engine and Tender Weight | 908800 lbs |
| Tender Water Capacity | 22500 gals |
| Tender Fuel Capacity (oil/coal) | 26 tons |
| Minimum weight per yard of rail on which locomotive could run | 112.92 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 69" |
| Boiler Pressure | 285 psi |
| Cylinders (dia x stroke) | 20.5" x 32" (4) |
| Tractive Effort | 94428 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.30 |
| Heating Ability | |
| Firebox Area | 633 sq. ft |
| Grate Area | 108.20 sq. ft |
| Evaporative Heating Surface | 5389 |
| Superheating Surface | 1681 |
| Combined Heating Surface | 7070 |
| Evaporative Heating Surface/Cylinder Volume | 220.42 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 30837 |
| Same as above plus superheater percentage | 38168.97 |
| Same as above but substitute firebox area for grate area | 223299.03 |
| Power L1 | 31747.94 |
| Power MT | 1033.09 |
| This page last modified: . | [Contact] | All material © 1999-2008 SteamLocomotive.com |
