User guide

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STAMPEDE 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.
Adjusting the Toe-in
Geometry and alignment specs play an important role 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° toe-in). This will ensure the same amount
of steering in both directions. For increased stability add 1° to 2°
of toe-in to each front wheel. Use the turnbuckles to adjust the
alignment.
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 1 on the front suspension arms and position
2 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 2 on the suspension arms.
2. Move the rear shocks to position 3 on the suspension arms.
3. Add additional preload spacers.
4. Position 1 is not recommended for the rear shocks.
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
light-weight 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
Strip of
Paper
Motor
Screw
Toe Base Factory Settings
Front: 0-degrees
Rear: 1.5-degrees
Preload
Spacer
Rear toe-in can be adjusted
using accessory rear axle
carriers, part #1952X. These
can add or remove 1.5° toe
per side, for a total of 0 to 3
degrees per side.
* The shock guards must be removed on
the front arms to access position 4.
** The shock guards must be removed on
the front or rear arms to access position 5.