LATE MODEL SET-UP SHEET \ BASIC SET-UP
RIDE HEIGHTS:

LF: 3" Between top of lower control arm and bottom of frame
RF: 3" Between top of lower control arm and bottom of frame
LR: Set with the wedge
RR: 4-1/4" Between the top of lower frame rail and bottom of axle tube
( Newer cars that have dropped down underslung bar )
3"( Older cars with up sloping underslung bar )


SPRINGS:

LF: 500 lb.     RF: 400 lb.     LR: 275 lb.     RR: 225 lb.


SHOCKS:
LF: 75     RF: 76     LR: 94     RR: 94
FRONT END ALIGNMENT:
Caster: LF: 2+     RF: 5+
Camber: LF: 1 3/4+     RF: 2-
Toe Out: 1/8" to 1/4"
TORQUE ARM SETTINGS:
73 Shock; 300 or 350 lb. Spring; 3" travel; preload 1/4" and check travel.
NOTE: 38" range usually performs best
REAR SUSPENSION:
  • Four bars should be run in the third hole up on the top bars and left lower should be in the upper hole and right lower should be in the lower hole.
  • Raise right upper bar up to help a push condition.
    NOTE: Raising bars up usually promotes forward bite initially but will unhook car mid-straight away.
  • Set cars w/75 to 100 lbs. left rear on birdcage, clamp bracket optional for tight stop and go tracks.
    NOTE: LR varies according to track variations.
    NOTE: Birdcages usually keeps the car hooked longer
RECOMMENDED STARTING PERCENTAGES:
Left: 53%     Rear: 53%     Cross: 51%
NOTE: This is car w/15 gallons of fuel.
NOTE: Scale the car without the driver.

FOUR BAR LENGTHS FROM CENTER TO CENTER:
Left Upper: 17"
Right Upper: 17-1/2"
Left Lower: 15"
Right Lower: 15-1/2"

Panard bar should be 7 1/2 from bottom of frame rail to center line of bracket and third hole down on pinon. Center to center is 18 3/4". 18 3/4" on dry slick track.
NOTE: Lower panard bar on pinion for more side bite
COMMON SET-UP PROBLEMS:
  • Car tight: Soften front and stiffen rear
  • Car loose: Stiffen front and soften 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 a smooth slick track.
  • Lap times improved by keeping car straight and using a smooth throttle application.
  • All these set-ups can only be justified wth proper maintenance and checking all suspension components on a regular basis.

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