, I spoke with the car's chief engineer, David Twohig, and the subject of steering came up . The A110 has excellent steering, perfectly weighted, offering the driver clear lines of communication about what's happening at the front tires. It's also electrically assisted.That's an interesting point. Electric power-assist steering has been controversial among enthusiasts. An EPAS system uses an electric motor on the steering shaft to help the driver turn the wheel.
, front-suspension geometry has a huge effect on steering feel, and there's a number of other factors, like tires, weight over the front axle, and more. Twohig told me that the team at Alpine considered manual steering at first, but after driving the 4C, they quickly decided that wasn't the way to go. Alpine engineers also found that the 4C's front suspension geometry was very compromised, with a kingpin angle of nearly zero. The steering axis, also known as kingpin inclination angle, is the axis about which the wheel steers.
"There have been improvements made right across the patch, from input sensors , to the actuator , output sensors , but also the ECU speeds, and the sophistication of the control software," Twohig says."And we're not even touching on improvements to the mechanical package: Location of the motor, stiffness of the system etc."
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