Pennsylvania Railroad Odd D 10003

Pennsylvania Railroad's Odd D #10003 was an experimental electric locomotive built in 1907 by Baldwin and Westinghouse.[1] It had a 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".

PRR Odd D 10003
Odd D #10003
Type and origin
Power typeElectric
BuilderBaldwin and Westinghouse
Build date1907
Total produced1
Specifications
Configuration:
​
 • Whyte4-4-0
 • AAR2-B
 • UIC2'B
Gauge4 ft 8 1⁄2 in (1,435 mm) standard gauge
Wheel diameter72 in (1,800 mm)[1]
Electric system/s11 kV, AC, 25 Hz
Current pickup(s)Pantograph
Internal diagram

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.

Footnotes
  1. Soloman, Brian (2003). Electric Locomotives. Saint Paul, MN: MBI Publishing. p. 44. ISBN 978-0-7603-1359-6.CS1 maint: ref=harv (link)
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References
  • Staufer, Alvin F.; Pennypacker, Bert (1962). Pennsy Power: Steam and Electric Locomotives of the Pennsylvania Railroad, 1900-1957. Research by Martin Flattley. Carollton, Ohio: Alvin F. Staufer. p. 247. ISBN 978-0-9445-1304-0.


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