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21
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.
To set the gear mesh, cut a narrow strip
of notebook paper and run it into the
gear mesh. Loosen the motor screws and
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.
Centering Your Servo
If the trim controls on your transmitter seem off, you may need to
recenter your servo. Additionally, whenever your servo has been
removed for service or cleaning, it must be re-centered prior to
installation in the model.
1. Disconnect 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 towards the crystal.
3. Place fresh “AA” batteries in the transmitter and turn the
transmitter power switch on.
4. Turn the throttle and steering trim adjustments on the
transmitter to the center “0” position.
5. Disconnect motor wires. Connect a fresh battery pack to the
speed control and turn on the ESC (
see page 14
). The servo will
automatically jump to its center position. The servo horn may
now be installed onto the servo output shaft.
6. 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. Repeat
1-6 if necessary.
Motor
Screws
Strip of
Paper
Adjusting Your Model
