Pennsylvania Railroad class D14

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PRR D14a 4-4-0 1651.jpg
PRR D14a #1651 in its builders’ photograph
Type and origin
Power typeSteam
BuilderPRR Altoona Works[1]
Build date1893–1894[1]
Total produced22[1]
 • Whyte4-4-0
 • UIC2′B
Gauge4 ft 8 12 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]
Wheelbase22 ft 8 12 in (6.92 m)[2]
Length57 ft 6 14 in (17.53 m) (including tender)[2]
Height15 ft (4.57 m)[2]

Class D14 on the Pennsylvania Railroad was a type of steam locomotive with a 4-4-0 wheel arrangement in the Whyte notation.[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]


  1. ^ a b c d e f Chamberlin, Clint. "PRR Steam Roster". Northeast Rails. Retrieved 2007-12-30.
  2. ^ a b c d e Pennsylvania Railroad. "PRR D14 Diagram". Retrieved 2007-12-31.
  3. ^ Staufer, Alvin F. & Pennypacker, Bert (1962). Pennsy Power: Steam and Electric Locomotives of the Pennsylvania Railroad, 1900–1957. Staufer. LCCN 62020878.