Traxxas • 19
Adjusting your Model
Once you become familiar with driving your model, you might need
to make adjustments for better driving performance
Adjusting the Slipper Clutch
The model is equipped with
an adjustable slipper clutch
which is built into the large
spur gear. The purpose of
the slipper clutch is to
regulate the amount of
power sent to the rear
wheels to prevent tire
spin. When it slips, the
slipper clutch makes
a high-pitch, whining
noise. Remove the rubber slipper clutch plug on the transmission
cover in order to adjust the slipper. Use the 4-way wrench to turn
the adjusting nut clockwise to tighten and counter-clockwise to
loosen. Place the model on a high-traction surface, such as carpet.
Adjust the slipper so that you can hear it slip for approximately two
feet from a standing, full throttle start.
Adjusting the Toe-in
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.
For increased stability add one- to two-degrees of toe in to each
front wheel. Use the turnbuckles to adjust the alignment.
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 dampening as a three-hole piston
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 dampening. Use only 100% pure
silicone shock oil to prolong seal life. The
model’s ride height can be adjusted by
adding or removing the clip-on, spring pre-
load 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 set-up 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.
Wheels and Tires
Many types of aftermarket tires and wheels can be adapted for use
on your model. Most will affect the overall width and the suspension
geometry of the model. The offsets and dimensions designed
into the model’s wheels are intentional; therefore, Traxxas cannot
recommend the use of other wheels with different specifications.
The diameter of the wheels is an innovative design, and there is
a variety of different tires available for you to experiment with in
addition to the included tires on the model (listed in your parts
list). Experimentation with different types of tires is recommended
to see which ones work the best on the terrain where the model
is run. When selecting tires, consider the overall diameter and the
rubber compound (hard or soft). If the overall diameter of the tire is
significantly increased, you will need to use a smaller pinion gear to
compensate for the larger tire. Soft compound tires with many short
spikes generally work better on hard, dry surfaces. In loose dirt, a tire
with large spikes should perform better.
1
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-2
°
1
°
-2
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0
°
0
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Pre-load
Spacer
To achieve a good starting
point for the slipper clutch
in these models, tighten the
slipper clutch adjusting nut
clockwise until the slipper
clutch adjusting spring
fully collapses (do not over
tighten), and then turn the
slipper clutch nut counter-
clockwise one full turn.
Tighten
Loosen
Do not run your model with
the slipper clutch adjusting
spring fully compressed. The
minimum recommended
slipper clutch setting is 1/2
turn counter-clockwise from
fully compressed.
