|
ted, the pic and link was helpful.
The minute I saw the picture I think I starting to get Scrub radius.
I think it is the leverage between around which the front wheel turns and where the tire is centered on the ground.
On an SC/Carrera it is determined by drawing a line down through the center of the strut (hinge point) to the ground and comparing that to where the center of the tire patch is. The longer the difference between the center of the wheel and the point about which the strut rotates to higher the scrub. This leverage has an effect and the larger that distance (or lever) the larger the effect.
Anyone that has driven a factory 930 or Turbo Look as felt the front wheels pulling at the steering wheel under braking as each front wheel's traction changes.
On a narrow body car the ball joint overlaps the rim so the scrub radius is probably not very large. In a 930 with stock wheel that are pushed out about 2" the scrub radius is significant.
Thus, Doing this mod on a narrow body is probably not that big of a deal.
However, this mod on a 911, as it makes the A arm longer will increase the wheel spring rate on a torsion bar car.
I am however wondering if it flattens the camber curve as the A arm as it rotates from a downward angle toward being level it will not push the strut as far with the same amount of compression.
I am after camber gain with wheel travel and I am a narrow body so I do not think lengthen the A arm is my best approach though is has benefits like less bump steer and less steering effort.
Though I do feel like I have to use a fair amount of mussel to keep my car on a long sweeper.
Make any sense?
|