MODIFIED SET-UP SHEET \ CHASSIS # 200 - UP
SWING ARM OR 3-LINK SUSPENSION

RIDE HEIGHTS: ( Wide Metric Suspension ) From ground to bottom of frame
LF: 5-1/2"
RF: 6"
RR: 3 to 3-1/2" between axle tube and right rear lower frame

FRONT SUSPENSION: ( All reference points measured same as standard suspension )
Springs:
LF: 900 lb.     RF: 1000 lb.     LR: 300 lb.     RR: 275 lb.

Shocks:
LF: 75     RF: 75     LR: 94     RR: 94

90/10 over rear end mounted as far right as possible 10-12 degrees angle up front of car
FRONT WHEEL ALIGNMENT SETTINGS:
Caster: LF: 1-1/2+2+     RF: 3+4+
Camber: LF: 1-1/2+     RF: 3-
REAR SUSPENSION SETTINGS:
Bar lengths from center to center are as follows:
Left upper 30"
Right Upper 30"
Left Lower 15"
Right Lower 15"

Lower bars should be in the second or third hole up
NOTE: Raising bars usually promotes forward bite.
TORQUE LINK:
39-1/2" center to center
1/4" preload on 850 lb. - 900 lb. spring
J-BAR:
  • Length 18-3/4" center to center
  • 7" from bottom of frame rail to center of hole on frame mount
  • Third hole on the rear end
    NOTE: Raise J-Bar on frame for more side bite

( Optional ) Straight panard bar
  • Length 30" center to center
  • 2-3" higher on frame
    NOTE:
    • 8 degrees pinion angle
    • Watch body roll 2-1/2 to 3" on RR     1-3/4 to 2" on RF
    • More left rear to correct loose condition coming off turns
    • When car is loose on entry, not enough right rear or not enough body roll
PERCENTAGES:
52% to 53% left side
56% to 58% rear
Keep cross between 48% to 50%
COMMON SET-UP PROBLEMS:
  • Car Tight: Soften front and stiffen the rear
  • Car Loose: Stiffen front and soften the rear
    NOTE: LR clamp bracket usually corrects a loose condition and requires a 25 lb. stiffer spring.
  • Shock rates are important in tuning a car and softer shocks will improve lap times on smooth slick tracks.
  • Lap times improved by keeping the car straight and using a smooth throttle application

**All these set-ups can only be justified with proper maintenance and checking all suspension components on a regular basis.

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