MAR 21st 2015

Cars that rock 73MM: March 721X

It’s utterly subjective, of course, but the March 721X has to be in the running for the best looking airbox in today’s F1 demonstration. Not the tallest, not the biggest but, as an item of sculpture, it has genuinely attractive form. The 1972 721X was an evolution of the 711, better known as they ‘Tea Tray’ thanks to its distinctive front wing, from the previous year. Out went the 711’s experimental aerodynamics and in came an experimental mechanical layout.

The gearbox was positioned ahead of the axle, an idea inspired by the Alfa 33 TT3 sports prototype which, like the 721X, was raced by Ronnie Peterson. Yet despite its innovation, its motorsport career was short-lived. It had been designed with the intention of benefitting from then-forthcoming regulations which would have seen the whole field race on the same tyres – but those rules never came into force, and a quick redesign was necessary. Its replacement, the 712G, gained its G suffix as a cheeky nod to the speed with which it was developed. It stands for Guinness, as in world record time…

Scroll through the gallery above for more photos.


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