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Rear toe-in can be adjusted
using accessory rear axle
carriers, part #1952X. These
can add or remove 1.5° toe
per side, for a total of 0 to 3
degrees per side.
24 • RUSTLER 4X4
ADJUSTING YOUR MODEL
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.
Shock Mounting Positions
Big bumps and rough
terrain require a softer
suspension with the
maximum possible
suspension travel and
ride height. Racing on a
prepared track or on-road
use requires a lower ride
height and firmer, more
progressive suspension
settings. The more progressive suspension settings help reduce
body roll (increased roll stiffness), dive during braking, and squat
during acceleration.
The suspension of your model has been set up for off-road
performance (position 2 on the front suspension arms and position
3 on the rear suspension arms). If you plan on driving on hard
surfaces, the following changes should be made:
1. Move the front shocks to position 3 on the suspension arms.
2. Move the rear shocks to position 4 or 5 on the suspension arms.
3. Add additional preload spacers.
4. Position 1 is not recommended for the rear shocks.
Fine Tuning the Shocks
The four shocks on the model greatly
influence its handling. Whenever you
rebuild your shocks, or make any changes
to the pistons, springs, or oil, always make
Motor
Strip of
Screw
changes to them in pairs (front or rear).
Paper
Piston selection depends on the range of
oil viscosities that you have available. For
Strip of
example, using a two-hole piston with a
Paper
light-weight oil will, at one point, give you
the same damping as a three-hole piston
Motor
Screw
with heavier oil.
We recommend using the two-hole
pistons with a range of oil viscosities from
10W to 50W (available from your hobby
shop). The thinner viscosity oils (30W or
less) flow more smoothly and are more
consistent, while thicker oils provide more damping. Use only 100%
pure silicone shock oil to prolong seal life. From the factory, shock
oil is set to 50W in the front shocks and 30W in the rear shocks.
The model's ride height can be adjusted by adding or removing the
clip-on, spring preload spacers. Adjust the ride height so that the
suspension arms are slightly above being parallel to the ground.
Observe how the model handles in turns. Proper setup will add stability
and help prevent spin outs. Experiment with different springs and
shock oils to find what works best for your current track conditions.
Preload
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