Lotus 27 was a Formula Junior

Formula Junior

Formula Junior is an open wheel formula racing class first adopted in October 1958 by the CSI . The class was intended to provide an entry level class where you could use inexpensive mechanical components from ordinary automobiles...

 version of the Lotus 25

Lotus 25

The Lotus 25 was a racing car designed by Colin Chapman for the 1962 Formula One season. It was a revolutionary design, the first fully stressed monocoque chassis to appear in F1...

 Formula One

Formula One

Formula One, also known as Formula 1 or F1 and referred to officially as the FIA Formula One World Championship, is the highest class of single seater auto racing sanctioned by the Fédération Internationale de l'Automobile . The "formula" designation in the name refers to a set of rules with which...

 car for the 1963 Formula Junior season. All aluminum monocoque

Monocoque

Monocoque is a construction technique that supports structural load by using an object's external skin, as opposed to using an internal frame or truss that is then covered with a non-load-bearing skin or coachwork...

 with steel bulkheads. Originally designed with fibreglass sides which lead to stiffness problems, leading to them being replaced with aluminium.

The Team Lotus

Team Lotus

Team Lotus was the motorsport sister company of English sports car manufacturer Lotus Cars. The team ran cars in many motorsport series including Formula One, Formula Two, Formula Ford, Formula Junior, IndyCar and sports car racing...

 cars were run by Ron Harris, and Peter Arundell

Peter Arundell

Peter Arundell was a racing driver from England, who raced in Formula One for the Lotus team. He participated in 13 World Championship Grands Prix, scoring 12 championship points....

won the 1963 British championship after the initiere solved.