Racecar Engineering

The joy of six

Last year, the lunatics at Hennessey, a US creator of Lotus-based machines that top 250mph, previewed a concept called ‘Deep Space’. The $3 million electric hypercar is designed to surpass 200mph and, in order to harness the presumably several thousand horsepower electric powertrain, it will feature six wheels.

Radical as this concept may seem to some of the younger generation, company CEO, John Hennessey, is not the first to decide four wheels just won’t cut it, and in racing many have added extra wheels in search of performance over the years.

Rule makers – ever the spoilsports – clamped down on such antics in the 1980s, but fortunately a plethora of six-wheelers, some well-known, others less so, made it out into the wild before they did so.

In the early days [motivation] revolved solely around the general unsuitability of then current tyre technology for racing

The pioneers

The motivation behind bolting on an extra axle has evolved over the years, and in the early days it revolved solely around the general unsuitability of then current tyre technology for racing. The late 1920s and early ’30s saw the idea of an extra pair of wheels, though not an extra axle, starting to come into vogue.

Possibly the earliest example is Raymond Mays’ (who was later heavily involved in first ERA, and then BRM racing operations) Vauxhall Villiers TT. Hitting the track in 1929, it was based on a 1922 Vauxhall TT racer, sported a twin rear wheel set up and won that year’s Shelsley Walsh hillclimb. Through the 1930s, several manufacturers, including ERA, would follow his lead.

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PIT CREW Editor Andrew Cotton @RacecarEd Email andrew.cotton@chelseamagazines.com Deputy editor Daniel Lloyd @RacecarEngineer Email daniel.lloyd@chelseamagazines.com Sub editor Mike Pye Art editor Barbara Stanley Technical consultant Peter Wri

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