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ROLL CENTRE ADJUSTMENT (SPEED SECRET)
FRONT SPRINGS
See Page 8 - Step 8
See Page 3 - Step 2 & Page 4 - Steps 3, 4a
When using the alloy speed secret pivot parts (
U7918
and
U7919
)
the roll centre can be adjusted by adding or removing spacers from
below the alloy pivot mount and alloy pivot block.
Lowering the roll centre (removing spacers) will give the car more grip
and increase chassis roll.
Raising the roll centre (adding spacers) will increase steering by
making the car rotate more from the rear.
The alloy pivot mount and block need 1mm spacers below them to
achieve the kit roll centre setting.
Softer springs will ride the bumps better and generally allow the car to roll
more which can increase steering, especially in the middle of the corner.
Harder springs make the car more responsive and are more suitable for
high grip tracks. They will generally increase initial steering but improve
mid corner stability.
FRONT DAMPING
See Page 8 - Step 8
Front damping can be used to tune the car depending on the track traction levels. Like
rear damping, in high traction track conditions, thinner oil is required, compared to low
traction track conditions where thicker oil can improve the cars driveability.
Thicker oil on the kingpin generally always gives a less responsive, easier to drive car.
Too thick oil on the kingpin may lead to a ‘lazy’ feeling car which lacks corner speed.
We suggest a wide range of possibilities here starting from 12,000cSt to 40,000cSt
FRONT TRACK WIDTH
Wider Front Track Width will make the car easier to drive in general, with less
steering/rotation in the corners.
Narrower front track width will make the car harder to drive in general, with more steering
/rotation in the corners.
REAR TRACK WIDTH
See Page 10 - Step 10b
Wider rear track width provides increased rear grip and
an easier to drive car. Narrower rear track width
increases corner speed and steering, making the car
harder to drive.
Kit rear width has a 0.5mm of spacers on the right and
1.5mm of spacers on the left (remove or add spacers
equally to adjust track width).
Both parts MUST have
equal spacers below
them.
Using
U7897 - Alloy
Pivot Spacer 1mm pr
will make roll centre
adjustment easier.