Troubleshoot d'une suspension Part II

[Source Koni America]

TROUBLESHOOTING HANDLING ISSUE
The following is a guide to try to solve handling problems AFTER the car’s initial setup has already been found.

FRONT

Rebound
> Setting is too Firm – Can cause the car to “jack down” which can cause the driver to think the car is too firm in compression.  Can also cause a lack in grip from the tire not separating from the chassis fast enough and cause the car to push.
> Setting is too Soft – Though a soft rebound setting will allow better compliance with the road, the car
may feel floaty or excessively oscillate after hitting bumps.

Compression
> Setting is too Firm - Can cause the car to feel skittish and lose grip over rough sections of pavement.  Can
cause outside tire to be loaded too quickly. The car won’t stabilize in a turn.
> Setting is too Soft – Can cause a corner entry understeer.  Can possibly cause excessive suspension
movement.


REAR

Rebound
> Setting is too Firm – Can cause oversteer on corner entry from rear tires loosing traction.  Can also cause
the car to “jack down” in the rear.
> Setting is too Soft –  Can make the car feel like it is diving too much on corner entry.  Vehicle may feel
floaty or excessively oscillate after hitting bumps.

Compression
> Setting is too Firm - Can cause the car feel unstable or loose on rough pavement.  Can also cause the car
to want to step out when getting back on throttle..
> Setting is too Soft –  Can cause corner exit understeer and possible excessive suspension movement.



NOTES


1.When changing to firmer springs, the shocks usually need to be set firmer for rebound and softer for compression damping.

2. On rainy or slick tracks, softening the compression damping will help to delay initial loading on the tire which increases grip.

This is a guide for Shock Setup only.  Other factors such as the spring rates, sway bars, alignment and tire pressures will also have an affect on the handling of the vehicle