16
3. FRONT SUSPENSION
KICK UP
ROLL CENTER
TRACK-WIDTH
The tables describe the amounts of adjustment using the center and outside positions of the eccentric bushings.
The middle position eccentric bushings allow for finer adjustment increments.
The track-width is directly influenced by the size of the
wheels and tires used.
KICK-UP
TRACK-WIDTHROLL CENTER
FF
FFFF
FR
FRFR
(°)
(mm) (mm)
=7°
=6°
=8°
=6°
=5°
=7°
=8°
=7°
=9°
=
+
0.75mm
=
0mm
=
-
0.75mm
=
+
1.5mm
=
0mm
=
-
1.5mm
KICK-UP
C-HUB CASTER
6° 7° 8° 9° 10°
6° 12° 13° 14° 15° 16°
9° 15° 16° 17° 18° 19°
Caster is the angle between the steering pivot
axis and the vertical plane. Caster is affected not
only by the C-Hub caster, but also by the front
kick-up angle relative to the flat chassis bottom.
The table indicates how kick up angle effects
total caster.
The XB4’s stock caster blocks are 9°, but 6°
blocks are available as an option.
TOTAL CASTER
=
C-HUB CASTER
+
KICK UP
The XRAY alu front lower suspension holders provide great range of adjustment for the front suspension. Using different combinations of eccentric bushings, fine adjustment of front kick-up, roll-center, and front
track-width can be obtained. For more information about the influence of kick-up, front track-width, and roll centers on car handling, please refer to HUDY Set-up Book (#209100).
➊
➊
➋
➌
➌
➍
➍
903312
SFH M3x12
If the suspension arm does not move freely use a
HUDY Arm Reamer to size the holes of the arms
Arm Reamer 3.0mm
(HUDY #107633)
ECCENTRIC BUSHINGS HAVE TWO DIFFERENT OFFSETS FROM THE CENTER.
Middle position = 0.5° or 0.375mm from center.
Outer position = 1° or 0.75mm from center.
FRONT ARM
L=R
2mm
from front arm
2mm
from front arm
From Front Arm
SHIM 3x6.5x2
FRONT BLOCK
IMPORTANT
DETAIL
Composite eccentric bushings
0.5°
1°
INITIAL SETTING
0.5°
1°
INITIAL SETTING
Composite eccentric bushings
For SHORT arms do not use INNER
positions.
For LONG arms do not use OUTER
positions.
0.5°
1°
0.5°
1°
For SHORT arms use only OUTER
positions.
For LONG arms use only INNER
positions.
SHORT FRONT SUSPENSION ARM
#362112 MEDIUM OPTION
#362112-H HARD INCLUDED
#362112-G GRAPHITE OPTION
LONG FRONT SUSPENSION ARM
#362113-H HARD OPTION
#362113-G GRAPHITE OPTION
Check for free movement
DETAIL
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