GWR 3700 Class

Infobox Locomotive Auto
name = 3700 Class or City Class
powertype = Steam


imagesize = 250
caption = GWR 4-4-0 '3700' (City) Class, no. 3440 "City of Truro"
designer = Churchward
builder = Swindon
serialnumber =
buildmodel =
builddate = 1902-1909
totalproduction = 20
whytetype = 4-4-0
uicclass =
gauge = RailGauge|sg
trucks =
bogies =
leadingsize = 3'2"
driversize = 6'8½"
wheeldiameter =
trailingsize =
wheelbase =
length =
width =
height =
framesize =
axleload =
weightondrivers =
weight = 55.3 tons
locotenderweight = 92.05 tons
fueltype = Coal
fuelc

waterc

tenderc

consumption =
watercons =
primemover =
enginetype =
displacement =
cylindercount =
cylindersize = 18"×26"
transmission =
topspeed = 100 mph
poweroutput =
tractiveeffort = formatnum:17800 lbf
factorofadhesion =
locobrakes = Steam
trainbrakes = Vacuum
safety =
railroad = GWR
railroadclass = 3700
numinclass = 20
roadnumber = See article
officialname = City Class
nicknames =
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The Great Western Railway 3700 Class, or City Class, locomotives were a series of twenty 4-4-0 steam locomotives, designed for hauling express passenger trains. Ten of these locomotives were rebuilt from Atbara Class engines, the first (number 3405) being converted in September 1902 and the rest following in 1907-09. The other ten were built new during 1903 at the GWR's Swindon locomotive works, in the United Kingdom. The whole class was gradually replaced and scrapped in the period 1927–1931.

The most famous locomotive in the class, 3440 "City of Truro" (later renumbered 3717), is reputedly the first steam locomotive ever to travel in excess of 100mph. It is the only member of the class to survive in preservation, based at the National Railway Museum, York.

List of Locomotives

This class were subject to the 1912 renumbering of GWR 4-4-0 locomotives, which saw the Bulldog class gathered together in the series 3300-3455, and other types renumbered out of that series. The City Class took numbers 3700-3719, previously used by Bulldog locomotives.