Like the earlier 8-wheelers, many of these 10-wheelers were rebuilt in the 1920s with steel cabs, 12" piston valves, Baker, Southern, or Walschaert valve gear, new frames, and superheaters. Most ended their days in commuter service, to which they had been moved when the larger Pacifics entered service in the 'teens.
Two wound up on Australia's Commonwealth Railway as Class CA 78 & 79. 78 had Southern valve gear, 79 used Baker gear. 78's Australian career lasted 27 months, when she was written off. 79 lasted until May 1950, when she was written off. Both were scrapped in 1956. http://www.railpage.org.au/comrails/cr_locos/index.html
(Note: the official name for the New Haven was the New York, New Haven, and Hartford and the acronym that appeared on its tenders was NY, NH & H.)
| Specifications | |
|---|---|
| Class | G-4-a |
| Locobase ID | 3317 |
| Railroad | New Haven |
| Whyte | 4-6-0 |
| Road Numbers | 800-849 |
| Gauge | Std |
| Builder | Burnham, Williams & Co |
| Year | 1904 |
| Valve Gear | various |
| Locomotive Length and Weight | |
| Driver Wheelbase | 13.50' |
| Engine Wheelbase | 25.08' |
| Ratio of driving wheelbase to overall engine wheebase | 0.54 |
| Overall Wheelbase (engine & tender) | 55.08' |
| Axle Loading (Maximum Weight per Axle) | 45248 lbs |
| Weight on Drivers | 135860 lbs |
| Engine Weight | 174860 lbs |
| Tender Light Weight | |
| Total Engine and Tender Weight | 0 |
| Tender Water Capacity | 5000 gals |
| Tender Fuel Capacity (oil/coal) | 9 tons |
| Minimum weight per yard of rail on which locomotive could run | 75.48 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 73" |
| Boiler Pressure | 190 psi |
| Cylinders (dia x stroke) | 22" x 26" |
| Tractive Effort | 27840 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.88 |
| Heating Ability | |
| Firebox Area | 197 sq. ft |
| Grate Area | 29 sq. ft |
| Evaporative Heating Surface | 1929 |
| Superheating Surface | 400 |
| Combined Heating Surface | 2329 |
| Evaporative Heating Surface/Cylinder Volume | 168.63 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 5510 |
| Same as above plus superheater percentage | 6456.33 |
| Same as above but substitute firebox area for grate area | 43858.51 |
| Power L1 | 13163.70 |
| Power MT | 640.83 |
| This page last modified: . | [Contact] | All material © 1999-2008 SteamLocomotive.com |