F97/F98�Complete�Vehicle
5.�Chassis�and�Suspension
46
• Direct�steering�sensation
• Driving�condition�feedback
• M�dynamic�driving�in�the�limit�range
The�ratio�of�M�Servotronic�(M�EPS)�has�been�adapted�to�the�F97/F98;�of�particular�note�is�the�fact�after
an�eighth�of�a�turn�of�the�steering�wheel�the�rack�ratio�increases�by�8%.
F97/F98,�comparison�of�M�Servotronic�(M�EPS)�steering�gear�ratios
Index Explanation
1 Rack,�basic�version�G01/G02�(constant�gear�geometry)
2 Rack,�variable�sport�steering�F97/F98�(variable�gear�geometry)
A More�indirect�steering�gear�ratio�(variable�sport�steering)
B More�direct�steering�gear�ratio�(variable�sport�steering)
x Steering�wheel�angle
y Rack�travel
The�system�supplier�for�the�M�Servotronic�(M�EPS)�is�Thyssen�Krupp.
5.1.2.�M�Servotronic
The�Servotronic�function�familiar�from�conventional�hydraulic�power-steering�systems�is�also�used�on
the�M�Servotronic�(M�EPS)�and�is�available�as�standard�on�the�F97/F98.�It�is�a�M�Servotronic,�which
functions�according�to�the�same�operating�principle�as�in�production�vehicles.�The�difference�in�the
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