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Understeer Corrections
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Oversteer Corrections.
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Push, plowing, front tires slide out
first.
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Loose, rear tires slide out
first.
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Usually slight understeer is
safer.
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Oversteer can be dangerous, especially
at high speeds.
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Raise front tire pressure.
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Lower front tire pressure.
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Lower rear tire pressure.
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Raise rear tire pressure.
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Soften front shocks. Stiffen Bump.
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Stiffen front shocks.
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Stiffen rear shocks.
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Soften rear shocks.
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Lower front end.
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Raise front end.
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Raise rear end.
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Lower rear end.
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Widen front track.
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Reduce rear track.
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Install shorter front tires.
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Install taller front tires.
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Install taller rear tires.
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Install shorter rear tires.
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Install wider front tires.
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Install narrower front tires.
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Install narrower rear tires.
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Install wider rear tires.
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Soften front sway bar.
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Stiffen front sway bar.
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Stiffen rear sway bar.
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Soften rear sway bar.
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More front toe out.
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More front toe in.
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Reduce rear toe in slightly.
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Increase rear toe in.
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Increase front negative camber.
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Reduce front negative camber.
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Increase positive caster.
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Reduce positive caster.
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Soften front springs.
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Stiffen front springs.
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Stiffen rear springs.
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Soften rear springs.
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May need more front suspension travel.
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May need more rear suspension travel.
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Install wider front wheels.
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Install wider rear wheels.
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Use softer front compound if possible.
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Use harder front compound if possible.
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Use harder rear compound if possible.
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Use softer rear compound if possible.
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Remove weight from front of vehicle.
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Add weight to front of vehicle.
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Add weight to rear of vehicle.
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Remove weight from rear of vehicle.
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Drive a different line.
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Driver may be going in too deep.
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Use weight transfer to your advantage.
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Driver may be getting on the throttle to
early.
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High Speed. Increase front wing
downforce.
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High Speed. Increase rear wing
downforce.
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Too much front brake.
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Too much rear brake.
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Vehicle is TWITCHY at limit and hard to
keep
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Vehicle slides and is easy to drive at limit
but
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ahead of in the steering
department.
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does not corner to full
potential.
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Lower front and rear tire pressures
slightly.
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Raise front and rear tire pressures
slightly.
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Suspension may be too stiff.
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Suspension may be too soft.
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Shocks may be set too firm.
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Shocks may be too soft.
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Tires may be old or hard.
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Roll centers may be too high.
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Vehicle may not have enough suspension
travel.
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Lower vehicle.
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Vehicle may have a toe problem front or
rear.
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Tires may be too hard.
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Increase negative camber front and rear if
possible.
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Widen track front & rear.
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A properly set up vehicle will
usually push slightly on corner entry, be fairly neutral at the apex (STEADY
STATE) and exhibit slight power oversteer
on corner exit. Tight courses may require more oversteer, fast tracks
understeer.
Items needed: Accurate
tire pyrometer, tire gauge, notebook and tape measure. Suspension information
books.
Note: This is a sample of the methods
used to correct various handling problems. Books have been written on this
subject. Not every correction
will always work as expected. Stiffer front sway bars will, in many
cases, decrease understeer because of
reduced body roll and better camber control. The best rule is to change only
one thing at a time and keep notes.
Follow these suggestions
at your own risk, we listed them to make your racing
safer.
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