View Single Post
      09-17-2011, 05:48 AM   #29
Jon D
Brigadier General
Jon D's Avatar
Scotland
224
Rep
3,016
Posts

Drives: 2022 840d
Join Date: Sep 2009
Location: Scotland

iTrader: (0)

Quote:
Originally Posted by Needsdecaf View Post
This is not how electric power steering works. The electric motor works on the shaft, assisting in turning it. There is a direct connection between the shaft and the steering box. What you described is drive by wire steering, which the F10 does not have.
The electric motor imparts rotary motion to the pinion, which then moves the rack laterally. However, the motor requires an input from the steering wheel, via the computer/control unit, hence a very slight delay in reaction time. This, as I have previously mentioned, does not happen with a hydraulic system as the motive force, in the form of pressurised fluid, is constantly on-tap.
Appreciate 0