24 • 1/16 SUMMIT VXL
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 top
gear cover.
To set the gear mesh, cut a narrow strip of
notebook paper and run it into the gear
mesh of the motor. The motor is mounted
to an aluminum motor mount. Loosen
the single motor mount screw with the
provided 2.5mm wrench to slide the motor
mount. Slide the motor and pinion gear into
the spur gear. Retighten the motor mount
screw and then remove the strip of paper.
You should be able to run a fresh strip of
paper through the gears without binding them.
WHEELS AND TIRES
Your model uses 12mm axle hexes that allow many types of
aftermarket tires and wheels to 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 non-Traxxas wheels with different specifications.
Experimentation with different types of tires is recommended
to see which ones work the best on the terrain where the model
is run. 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. Foam tires can be fitted for use on
pavement or indoor carpet tracks. See your parts list for accessory
wheels and tires.
When selecting tires, consider the overall diameter of the tire.
If the overall diameter is significantly larger than the stock tire’s
diameter, you will need to use a smaller pinion gear to compensate
for the larger tire. If you wish to install tires with a diameter greater
than 4 inches or 100mm, Traxxas suggests you configure the
transmission for ‘underdrive’ gearing. Details on making this simple
modification are available at Traxxas.com.
TUNING ADJUSTMENTS
Motor Mount
Screw
Do Not Loosen
