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Pennsylvania Railroad class D3

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PRR D3
PRR D3 #274 in its builders' portrait.
Type and origin
Power typeSteam
BuilderPRR Altoona Works
Build date1869–1881
Total produced67
Specifications
Configuration:
​
 • Whyte4-4-0
 • UIC2′B
Gauge4 ft 8+1⁄2 in (1,435 mm)
Leading dia.28 in (711 mm) (D2a)
Driver dia.62 in (1,575 mm)
Wheelbase22 ft 5+5⁄8 in (6.85 m)
Length54 ft 5.44 in (16.60 m)
Width9 ft 0.94 in (2.77 m)
Height14 ft 8 in (4.47 m)
Adhesive weight50,950 lb (23.1 tonnes)
Loco weight79,100 lb (35.9 tonnes)
Tender weight51,400 lb (23.3 tonnes)
Total weight130,500 lb (59.2 tonnes)
Tender typeEight-wheel with water scoop
Fuel typeSoft coal
Fuel capacity8,000 lb (3.6 tonnes)
Water cap.2,400 US gal (9,100 L; 2,000 imp gal)

The Pennsylvania Railroad's steam locomotive class D3 (formerly Class C, pre-1895) comprised sixty-seven 4-4-0 locomotives intended for general passenger and freight service, constructed at the railroad's own Altoona Works (now owned by Norfolk Southern) during 1869–1881. They were the third standardized class of locomotives on the railroad and the most numerous of the early standard types; they shared many parts with other standard classes.

This design differed from the Class A (later D1) mainly in its smaller drivers for greater tractive effort for freight haulage. Like all the early standardized 4-4-0s on the PRR, the Class C had a wagon-top boiler with steam dome and a firebox between the two driving axles.

References

  1. ^ Pennsylvania Railroad. "Class D3 diagram". PRR.Railfan.net. Retrieved 2014-01-08.
  2. ^ "PRR Steam Roster". Northeast Rails. Retrieved 2014-01-08.
  3. Dredge, James (1879). The Pennsylvania Railroad. London: Engineering magazine.
  4. Warner, Paul T. (1924). Motive Power Development on the Pennsylvania Railroad System. Philadelphia: Baldwin Locomotive Works.
Pennsylvania Railroad locomotives
   
A (0-4-0):
B (0-6-0):
C (0-8-0):
D (4-4-0):
E (4-4-2):
F (2-6-0):
G (4-6-0):
H (2-8-0):
I (2-10-0):
J (2-6-2 and 2-10-4):
K (4-6-2):
L (2-8-2):
M (4-8-2):
N (2-10-2):
O (4-4-4):
P (4-6-4):
Q (4-6-4-4 and 4-4-6-4):
R (4-8-4):
S (6-4-4-6 and 6-8-6):
T (4-4-4-4):
Articulated steam locomotives:
Articulated electric locomotives:
Non-standard:
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