Editing Lotus Seven (section)

===Top speed===
A Seven's top speed greatly depends upon the body configuration, engine power and gearing. Early models with low-powered engines had difficulty exceeding {{convert|90|mi/h|km/h|abbr=on}}, although a race-prepared Seven was clocked at {{convert|127|mi/h|km/h|abbr=on}} whilst driven by [[Brausch Niemann]] through a speed-trap at the [[1962 Natal Grand Prix]].<ref>{{cite web|url=http://www.lotus7register.co.uk/springbk.htm|title=Natal Grand Prix|access-date=21 October 2006}}</ref> In addition, [[Flip (form)|clamshell]] style wings tend to create [[Drag coefficient|drag]] and generate lift at higher speeds. Cycle wings help alleviate this tendency, and low height [[windshield#Terminology|Brookland aeroscreens]] or the lighter Perspex variants that can replace the windscreen help improve top end speed. Sevens do suffer from front end lift at high speed – the nose creates more lift than downforce at speeds over around {{convert|70|mi/h|km/h|abbr=on}}, although retro fitted "winglets" may counter this.