Builder information from B Rumary list supplied by Allen Stanley in March 2004. Works numbers were 1756-1759 (December 1897-January 1898) and 1939-1945 (June 1899).
Although the data come from the St Louis-San Francisco era, the locomotives started out on the P M & Y. They were taken up by the New York Central and renumbered 9400-9410. (Locobase suspects that the Pittsburgh & Lake Erie locomotives (121 et seq) later taken in the NYC as the 9300-9314 were either from the same design or very similar.)
Rumary details the 9400 class's subsequent dispositions.
Successor roads ranged as widely as the Moon Run/Montour in Pennsylvania to the Muscle Shoals, Birmingham & Pensacola in Alabama to the St Louis-San Francisco to the Montana, Wyoming & Southern. Scotts Run railroad had 5 from a variety of orders.
| Specifications | |
|---|---|
| Class | 271 |
| Locobase ID | 2438 |
| Railroad | Pittsburgh, McKeesport & Youghiogheny |
| Whyte | 2-8-0 |
| Road Numbers | 271-281 / 870-871 |
| Gauge | Std |
| Builder | Pittsburgh |
| Year | 1897 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase | 14.67' |
| Engine Wheelbase | 22.67' |
| Ratio of driving wheelbase to overall engine wheebase | 0.65 |
| Overall Wheelbase (engine & tender) | 52.10' |
| Axle Loading (Maximum Weight per Axle) | |
| Weight on Drivers | 142000 lbs |
| Engine Weight | 157500 lbs |
| Tender Light Weight | 111700 lbs |
| Total Engine and Tender Weight | 269200 lbs |
| Tender Water Capacity | 4600 gals |
| Tender Fuel Capacity (oil/coal) | 9.6 tons |
| Minimum weight per yard of rail on which locomotive could run | 59.17 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 51" |
| Boiler Pressure | 180 psi |
| Cylinders (dia x stroke) | 20" x 26" |
| Tractive Effort | 31200 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.55 |
| Heating Ability | |
| Firebox Area | 162.50 sq. ft |
| Grate Area | 25.50 sq. ft |
| Evaporative Heating Surface | 1800 |
| Superheating Surface | |
| Combined Heating Surface | 1800 |
| Evaporative Heating Surface/Cylinder Volume | 190.40 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 4590 |
| Same as above plus superheater percentage | 4590 |
| Same as above but substitute firebox area for grate area | 29250 |
| Power L1 | 4228.03 |
| Power MT | 262.57 |
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