Surprisingly, Lotus, which knows a thing or two about chassis dynamics, said that tires and suspension tuning have a greater impact on ride and handling than adding the 68 lbs per wheel that the Protean system weighs. That sounds like heresy in an automotive world that has chanted “reduced unsprung mass” as a mantra for the past 50 years, at least. Reducing the mass of the parts of the car not supported by the suspension, in other words the mass of the suspension itself, has long been considered essential to better handling. Since theyΆre mounted in the wheel, hub motors are on the wrong side of the unsprung mass equation.
Lotus says that while adding weight to the wheel has an effect on ride and handling, that effect can be offset by normal suspension tuning procedures.
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Surprisingly, Lotus, which knows a thing or two about chassis dynamics, said that tires and suspension tuning have a greater impact on ride and handling than adding the 68 lbs per wheel that the Protean system weighs. That sounds like heresy in an automotive world that has chanted “reduced unsprung mass” as a mantra for the past 50 years, at least. Reducing the mass of the parts of the car not supported by the suspension, in other words the mass of the suspension itself, has long been considered essential to better handling. Since theyΆre mounted in the wheel, hub motors are on the wrong side of the unsprung mass equation. Lotus says that while adding weight to the wheel has an effect on ride and handling, that effect can be offset by normal suspension tuning procedures.
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