Traxxas HOSS 4x4 VXL 90076-4 Owner's Manual page 25

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
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 and 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.
Centering Your Servo
If you have removed the servo horn from your model's steering servo,
or the servo has been removed for service or cleaning, the servo must
be re-centered prior to installation of the servo horn or installation of
the servo in the model.
1. Remove the servo horn from the steering servo.
2. Connect the steering servo to channel 1 on the receiver. Connect
the electronic speed control (ESC) to channel 2. The white wire on
the servo lead is positioned toward the receiver's LED.
3. Turn the transmitter power switch on. Make certain the
Preload
transmitter's batteries are not depleted.
Spacer
4. Turn off TSM (see page 17).
5. Turn the transmitter's steering trim knob to the center "0" position.
6. Disconnect motor wires "A" and "C" (see page 12) to prevent the
motor from turning during the next steps. Connect a fresh battery
pack to the speed control and turn on the ESC (see page 18). The
servo's output shaft will automatically jump to its center position.
7. Install the servo horn onto the servo output shaft. The servo horn
should face toward the center of the chassis and be perpendicular
to the servo body.
8. Check servo operation by turning the steering wheel back and
forth to ensure that the mechanism has been centered properly
and you have equal throw in both directions. Use the transmitter's
steering trim knob to fine-tune the position of the servo horn so
the model tracks straight when the steering wheel is at neutral.
BASIC TUNING ADJUSTMENTS
HOSS 4X4 VXL • 25