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24 • SLASH 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 a 4mm preload spacer to the front shock.
4. Position 1 is not recommended for front or rear.
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
changes to them in pairs (front or rear).
Piston selection depends on the range of
oil viscosities that you have available. For
example, using a two-hole piston with a
lightweight oil will, at one point, give you
the same damping as a three-hole piston
Strip of
with heavier oil.
Paper
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
Motor
Screw
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 40W 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.
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