Editing Driving wheel (section)

==Flangeless wheels== 
Some long-wheelbase locomotives (four or more coupled axles) were equipped with '''blind drivers'''. These were driving wheels without the usual [[flange]]s, which allowed them to negotiate tighter curves without binding.<ref>{{cite journal| page=136| journal=Locomotive Firemen and Enginemen's Magazine| date=August 1916| title=Questions and Answers: Distance Traveled by Driving Wheels in Curving| first=F.P.| last=Roesch| volume=61| issue=2| editor-first=John F.| editor-last=McNamee| publisher=Brotherhood of Locomotive Firemen and Enginemen| location=Columbus, Ohio| url=https://books.google.com/books?id=fPXNAAAAMAAJ&q=locomotive+blind+driver&pg=PA136| via=Google Books}}</ref>

Some three-driving-axle locomotives also had flangeless wheels on the middle axle, such as [[Everett Railroad 11]], and the [[NZR WH class]].