18 QD134-15
6. SETTING UP THE CAR
When the car leaves the factory, it will have a base setup on the car which is displayed on page 18. This is
a setup which has shown to work,
feel more comfortable with the car.
6.1 HOW TO SET UP THE CAR
Setting up the Radical may seem a daunting task at first; however, adjustments are incredibly simple with
everything being of easy access allowing for fast setup changes whenever you feel the need to adjust certain
areas. Below is a step by step guide of how to work with the car on the flat patch.
1. Check front pushrod lengths are equal & front springs have 3 turns of pre-load. The pushrods are
jigged from production. Front: 270mm. Rear: 280mm.
2. Check rear spring platform-to-cap distance is equal (approx. 125mm)
3. Ballast with 80Kg (10Kg in footwell by the pedals, 70Kg in seat) unless specific driver weight is
known.
4. Lock steering to straight ahead using dummy steering wheel
5. Set tyre pressure to hot pressure from setup sheet
6. Disconnect front & rear anti-roll bars
7. Check dampers are set to minimum all round (Full soft)
8. Bounce & roll car
9. Check drop heights and adjust average of front & rear to be within 1mm of target
10. Set cambers (+/- 0.1° from target)
11. Set toes (+/- 0.5mm from target)
12. Roll car off platform, turn on scales and zero
13. Roll car back onto platform, repeat bounce & roll
14. Check corner weights. Target is within 5Kg across front, and within 2% for diagonals
15. Adjust using rear platforms or rear pushrods.
16. Note down where the drop heights are post corner weight changes. (The drop height will probably
not be equal, due to the offset seating position, so target drop height should be an average of the left
& right readings.)
17. Re-connect anti-roll bars making sure there is no pre-load
18. Set dampers, they should always be set from fully closed.
19. Turn off scales
6.2 CORNER WEIGHTS
One of the most important setup factors is to ensure that the
front corner weights are as equal as possible. The cross weight
is not as crucial in comparison. (The offset driving position of
the driver will usually mean that the weight cannot be made
exactly equal.)
To adjust the front corner weights, raise or lower the diagonal
rear.
The maximum difference in front weights should be no more
than 5kg (11lb)
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