2.3. Design Procedure
Height of the roll centre was decided to be 50mm from the ground. Generally race car prefers negative camber in
order to have lateral force and toe out due to ease while turning. The values of camber, caster and toe angles were
decided to be -1o, 5o and 1o [13]. These values would be attained when the vehicle is in a standstill position with a
75 kg person seated inside. Taking these design decisions as constraint, an iterative design procedure was followed
to make the rest of the design decisions. The first decision to be made was the coordinates of mounting points and
dimensions of the A-arms. From the survey of commercially available knuckles, the King Pin inclination of 7o and
vertical distance between mounting points of lower and upper A-arms of 205mm along with a track width of
1200mm was chosen for the first iteration. The coordinate system shown in Fig.1 was followed throughout the
procedure.