11
ROLL-CENTER
CHASSIS ALTERNATIVES
VIDEO TECH TIP
▶
303118-K
SHIM 3x9x1
303119-K
SHIM 3x9x2
903308
SFH M3x8
901308
SB M3x8
901408
SB M4x8
SUSPENSION ARMS
2x
4x
4x
8x
2x
2. FRONT & REAR SUSPENSION
2mm
1mm
3x8mm
3x8mm
1mm
Marked “FL”
Marked “RL”
Marked “FR”
Marked “RR”
2mm
We recommend the MEDIUM hardness of the lower suspension arms for
asphalt. These arms are more flexible than the H (hard) arms.
For carpet racing and even some high-grip asphalt conditions, we
recommend the HARD suspension arms.
RAISING THE LOWER ARMS will raise the car’s roll center. Raising the lower
arms both front and rear will free up the car, and will make it initially
more responsive. Side bite will be decreased. A higher roll center is typically
recommended for asphalt racing.
LOWERING THE LOWER ARMS will lower the car’s roll center. Lowering both
the front and rear arms will lock in the car more, and will make it initially
less responsive. Side bite will be increased. A lower roll center is typically
recommended for carpet racing.
ROLL-CENTER ADJUSTMENT
NOTE ORIENTATION
Front Arms.
NOTE ORIENTATION
Rear Arms.
#302121
FRONT ROLL-CENTER SPACER (2)
#302122
REAR ROLL-CENTER SPACER (2)
FRONT LOWER ARMS
#302183-M LEFT MEDIUM INCLUDED
#302182-M RIGHT MEDIUM INCLUDED
#302183-H LEFT HARD OPTION
#302182-H RIGHT HARD OPTION
REAR LOWER ARMS
#303183-M LEFT MEDIUM INCLUDED
#303182-M RIGHT MEDIUM INCLUDED
#303183-H LEFT HARD OPTION
#303182-H RIGHT HARD OPTION
Use 3x9x1mm alu shims
under FRONT arms.
Use 3x9x2mm alu shims
under REAR arms.
3x8mm
4x8mm
3x8mm
Make sure to
NOT OVERTIGHTEN
4.0mm
LEFT = RIGHT
L=R
2.5mm
DETAIL
Make sure to NOT OVERTIGHTEN
Install the pivot balls with Professional
Multi Tool (HUDY #183011).
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