PRR D3

PRR D3

PRR D3
PRR D3 #274 in its builders' portrait.
Specifications
Power type Steam
Builder PRR Altoona Works
Build date 1869–1881
Total produced 67
Configuration 4-4-0
UIC classification 2′B
Gauge
Leading wheel
diameter
28 in (711 mm) (D2a)[1]
Driver diameter 62 in (1,575 mm)[1]
Wheelbase 22 ft 5 58 in (6.85 m)[1]
Length 54 ft 5.44 in (16.60 m)[1]
Width 9 ft 0.94 in (2.77 m)[1]
Height 14 ft 8 in (4.47 m)[1]
Weight on drivers 50,950 lb (23.1 tonnes)[1]
Locomotive weight 79,100 lb (35.9 tonnes)[1]
Tender weight 51,400 lb (23.3 tonnes)[1]
Locomotive and tender
combined weight
130,500 lb (59.2 tonnes)[1]
Tender type Eight-wheel with water scoop
Fuel type Soft coal
Fuel capacity 8,000 lb (3.6 tonnes)[1]
Water capacity 2,400 US gal (9,100 l; 2,000 imp gal)[1]
Career

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 during 1869–1881.[2] 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.[3]

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.[2][4]

References