20 • SLASH 4X4 ULTIMATE
Once you become familiar with driving your model, you might need
to make adjustments for better driving performance
ADJUSTING GEAR MESH
Incorrect gear mesh is the most
common cause of stripped spur gears.
Gear mesh should be checked and
adjusted anytime a gear is replaced.
Access the gears by removing the
single screw on the gear cover.
To set the gear mesh, loosen the
motor screw. Cut a narrow strip of
notebook paper and run it into the
gear mesh. Slide the motor and pinion
gear into the spur gear. Retighten the
motor screws and then remove the
strip of paper. You should be able to
run a fresh strip of paper through the
gears without binding them.
ADJUSTING THE CAMBER
The camber angle of both the front
and rear wheels can be adjusted
with the camber links (upper turnbuckles). Use a square or right-
angle triangle to set the camber accurately. Adjust the front wheels
to 1 to 2 degrees of negative camber. In the rear, adjust the wheels
to 1 to 2 degrees of negative camber. These adjustments should be
set with the truck positioned at its normal ride height.
ADJUSTING THE TOE-IN
Toe-in refers to the angle of the wheels as viewed from above.
Geometry and alignment specs play an important roll in your
model’s handling. Take the time to set them correctly. Set the
steering trim on your transmitter to neutral. Now, adjust your servo
and tie rods so that both wheels are pointing straight ahead and are
parallel to each other (0-degrees toe-in). This will ensure the same
amount of steering in both directions.
Front Toe-In
: For increased stability add one- to two-degrees of toe
in to each front wheel. Use the turnbuckles to adjust the alignment.
Rear Toe-In
: You will notice that the Slash 4X4
Ultimate’s rear wheels point inward slightly,
which aids in stability. This is called toe-in, and is
measured in degrees. If the wheels point straight
ahead, parallel with the chassis’ centerline, then the
wheels have “zero toe-in.” The Slash 4x4 Ultimate is
equipped with aluminum rear stub axle carriers that
provide 4 degrees of rear toe-in. You will note that
the axle carriers are labeled “L” and “R,” to indicate
left and right. The axle carriers may installed on the opposite sides
BASIC TUNING ADJUSTMENTS
Camber
Toe-in
1°-2°
1°-2°
1°-2°
1°-2°
All of the toe links are
installed on the truck so the
left hand thread indicators
point to the same direction.
This makes it easier to
remember which way to
turn the wrench to increase
or decrease toe link length
(the direction is same at all
four corners). Note that the
groove in the hex indicates
the side of the toe link with
the left-hand threads.
Rear toe-in can be adjusted
using accessory rear axle
carriers, Traxxas Part #1952X.
These can add or remove 1.5°
toe per side, for a total of 1 to
4 degrees per side.
Strip of
Paper
Motor
Screw
Front Toe Base Factory Settings
Front:
0-degrees
Rear:
2.5-degree toe-in each side
Static Camber Base Factory Settings
Front:
1-degree negative camber each side
Rear:
1-degree negative camber each side
0°
4°
Aluminum axle carriers
installed as labeled:
4 degrees toe-in
Aluminum axle
carriers reversed:
1 degree toe-in
Plastic axle carriers
(not L/R dependent):
2.5 degrees toe-in
