PRR D3

Infobox Locomotive
name = PRR D3
powertype = Steam

---

caption = PRR D3 #274 in its builders' portrait.
builder = PRR Altoona Works
builddate = 1869–1881
totalproduction = 67
whytetype = 4-4-0
uicclass = 2'C
gauge = RailGauge|ussg
leadingsize = convert|28|in|abbr=on (D2a)cite web
title = Class D3 diagram
url = http://prr.railfan.net/diagrams/PRRdiagrams.html?diag=d3.gif&sel=ste&sz=sm&fr=
author = Pennsylvania Railroad
publisher = PRR.Railfan.net
accessdate = 2008-08-22]
driversize = convert|62|in|abbr=on
wheelbase = convert|22|ft|5.625|in|abbr=on
length = convert|54|ft|5.44|in|abbr=on
width = convert|9|ft|0.94|in|abbr=on
height = convert|14|ft|8|in|abbr=on
weightondrivers = convert|50950|lb|abbr=on
weight = convert|79100|lb|abbr=on
tenderweight = convert|51400|lb|abbr=on
locotenderweight = convert|130500|lb|abbr=on
tendertype = Eight-wheel with water scoop
fueltype = Soft coal
fuelc
convert|8000|lb|abbr=on
waterc
convert|2400|usgal|abbr=on

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. cite web
title = PRR Steam Roster
url = http://www.northeast.railfan.net/prr_steam2.html
work = Northeast Rails
accessdate = 2007-12-31] 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.cite book
title = The Pennsylvania Railroad
first = James
last = Dredge
year = 1879
publisher = "Engineering" magazine
location = London]

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.cite book
title = Motive Power Development on the Pennsylvania Railroad System
first = Paul T.
last = Warner
year = 1924
publisher = Baldwin Locomotive Works
location = Philadelphia]

References