PRR Odd D 10003
Odd D #10003
|Type and origin|
|AAR wheel arr.||2-B|
|Gauge||4 ft 8 1⁄2 in (1,435 mm) standard gauge|
|Electric system(s)||11 kV, AC, 25 Hz|
Pennsylvania Railroad's Odd D #10003 was an experimental electric locomotive built in 1907 of 4-4-0 wheel arrangement in the Whyte notation, or 2-B in the AAR scheme. On the PRR, class D was assigned to 4-4-0 locomotives. Production classes of locomotive were assigned a number after the letter, but one-off locomotives were simply designated "Odd".
In testing, #10003 proved to be more stable at speed than the two class AA1 B-B locomotives the PRR had also constructed, so its 4-4-0 arrangement and high center of gravity was chosen as the design for the PRR's DD1 production locomotives.
- Staufer, Alvin (1962). Pennsy Power. Staufer. p. 247. LOC 62-20878.
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