Editing W engine (section)

== W6 engines ==
The [[Rumpler Tropfenwagen]] had a [[Siemens|Siemens and Halske]]-built<ref name="WiseP1964">{{cite encyclopedia | last = Wise | first = David Burgess | author-link = David Burgess-Wise | editor = Tom Northey | encyclopedia =World of Automobiles | title = Rumpler: One Aeroplane which Never Flew | year = 1974 | publisher = Orbis | volume =17 | location = London | page = 1964}}</ref> {{convert|2580|cc|cid|abbr=on}} [[overhead valve]] W6 engine, with three banks of paired cylinders, all working on a common crankshaft.<ref name="WiseP1964" /><ref name="Period">{{cite book| last       = Rogliatti| first      = Gianni| editor        = Cyril Posthumus| editor-link   = Cyril Posthumus| title         = Period Cars| year      = 1973| publisher = Hamlyn| location  = Feltham, Middlesex, UK| isbn      = 0-600-33401-5| pages     = 108–109}}</ref>