"and the fact that it turns more than 360 degrees means the gearing is fixed -and- linear"
Not sure what you mean exactly, but it's not true that only assist power can be modulated. BMW cars with "Active Steering" have been available in Europe since 2003. These cars use a gearbox to achieve a variable steering ratio.
Not sure what you mean exactly, but it's not true that only assist power can be modulated. BMW cars with "Active Steering" have been available in Europe since 2003. These cars use a gearbox to achieve a variable steering ratio.
https://en.wikipedia.org/wiki/Active_steering