Pennsylvania Railroad class D14

The PRR class D14 was a 4-4-0 steam locomotive built for the Pennsylvania Railroad.^[3] They were originally designated class P in the PRR's pre-1895 classification scheme. Twenty-two locomotives were built at the PRR's Altoona Works (now owned by Norfolk Southern); six in 1893 with 78-inch (1,981 mm) driving wheels, and sixteen in 1894 with 80-inch (2,032 mm) drivers, classified D14a.^[1] Later, all sixteen class D14a were rebuilt to class D14b with 68-inch (1,727 mm) drivers for secondary service after they were replaced in top-flight express service, while three of the six class D14 were similarly rebuilt to class D14c.^[1]

Power typeSteam

Power typeSteam

BuilderPRR Altoona Works^[1]

Build date1893–1894^[1]

Quick facts PRR D14, Type and origin ...

PRR D14
PRR D14a #1651 in its builders’ photograph
Type and origin Power type Steam Builder PRR Altoona Works[1] Build date 1893–1894[1] Total produced 22[1]
Specifications Configuration: ​  • Whyte 4-4-0  • UIC 2′B Gauge 4 ft 8+1⁄2 in (1,435 mm) Leading dia. 36 in (914 mm)[2] Driver dia. 78 in (1,981 mm) (D14) 80 in (2,032 mm) (D14a) 68 in (1,727 mm) (D14b/c)[1][2] Wheelbase 22 ft 8+1⁄2 in (6.92 m)[2] Length 57 ft 6+1⁄4 in (17.53 m) (including tender)[2] Height 15 ft (4.57 m)[2] Fuel type Coal Fuel capacity 6.8 t (15,000 lb) Tender cap. 11,356 L (3,000 U.S. gal) Cylinders Two, outside Cylinder size 483 mm × 610 mm (19.0 in × 24.0 in) Valve gear Stephenson Valve type Piston valves Loco brake Westinghouse air brake Train brakes Westinghouse air brake
Performance figures Power output 836 hp (623 kW) Tractive effort 71.7 kN (16,100 lbf)
Career Retired 1900-1955 Scrapped 1905-1955

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