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SHOCKS
The four shocks on your Nitro 4-Tec Pro have the most
influence on its handling. Whenever you rebuild your
shocks, or make any changes to the pistons, springs or
oil, always do it carefully and in pairs (front or rear).
Piston head selection depends on the range of oil vis-
cosities that you have available. For example, using a
one-hole piston with a lightweight oil will give you the
same dampening as a two-hole piston with heavier oil.
We recommend using the two-hole pistons with 60W oil
(available from your hobby shop). The thinner viscosity
oils (30W or less) flow more smoothly and are more con-
sistent, while thicker oils provide more dampening. Use
only 100% pure silicone shock oil to prolong seal life.
The ride height for Nitro 4-Tec Pro can be adjusted by
adding or removing the clip-on spring pre-load spacers.
Instead of adding spacers to increase stiffness, use
stiffer springs. Adjust the ride height so that the suspen-
sion arms are parallel to the ground. Note that changes
in ride height will occur when the changes in damper
angle or spring rates are made. You can compensate for
ride height changes by changing the pre-load spacers
on the dampers. Generally speaking, ride height should
be set as low as possible without causing significant
bottoming of the chassis. Also, in order not to disturb
cornering balance, front and rear tire height diameters
should be equal. Replace excessively worn tires.
NOTE: At no time should the body of the car strike
the ground or interfere with the suspension or tires.
Either situation will cause extremely unpredictable
handling.
6
SPRING SPECIFICATIONS
Front and rear black springs (included):
Coils: 6.0
Wire Diameter: 1.18mm, (0.046in)
Inside Diameter: 13.6mm, (0.54in)
Height: 26mm, (1.0in)
Rate: 136 kg/m, (122 oz./in/), (7.6 lb./in)
MAINTENANCE
Form the habit of visually inspecting the mechanical
integrity of the Nitro 4-Tec Pro before each run.
1) Check the wheels and steering for binding. Check the
operation of the shock absorbers.
2) Check the tightness of the grub screws in the collars
on the throttle and steering linkages.
3) Check the mounting of the receiver and servos.
4) Check the tightness of the wheel nuts with a wrench.
5) Check the fuel tank and all hoses for signs of leaks.
6) Check the operation of the radio system, especially the
condition of the batteries.
7) Check the exhaust system for leaks, cracks, or tears.
Do not run the car if there are any exhaust leaks.
8) Use Traxxas Nitro Wash spray cleaner to keep the
Nitro 4-Tec Pro clean of accumulated dirt and oil.
For technical assistance regarding your model,
inside the United States, call 1-888-TRAXXAS.
For orders outside of the US and other information,
call 972-265-8000.
www.Traxxas.com
Traxxas
1100 Klein Rd.
Plano, TEXAS 75074
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