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Page 5
Lotus Service Notes
Section CI Camber Adjustment Camber is the angle from vertical of the wheel when viewed from the front, and is said to be negative when the wheel leans inwards at the top (positive when leaning outwards). The primary purpose of camber is to achieve the maximum efficiency of the tyre under cornering loads and body roll, with the specification closely allied to a particular wheel/tyre combination. The camber angle changes with suspension travel, becoming more negative on bump, and should be measured only at the specified ride height. Incorrect camber can result in handling deficiencies and excessive tyre wear. Camber adjustment is effected by adding or deleting shim plates between the steering arm (to which the upper steering swivel joint is fixed) and the hub carrier. - Shimplates are available in 1mm and 3mm thicknesses. - Reducing the shim pack thickness will increase negative camber. Adding shims will reduce negative camber. - A 1mm shim plate will alter camber by approximately 0.25°. - In March '04 the caphead bolts securing the ball joint plinth to the hub carrier were upgraded from 8.8 to 10.9 grade, with a corresponding increase in torque from 45 to 68 Nm. Before fitting these bolts, inspect the cap head for the grade marking, apply Permabond A130 (A912E7033) to the threads, and torque tighten to the appropriate figure. Camber angle c29 Vertical Wheel centreline
Camber adjustment shimplate Steering arm Hub carrier
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