Changing the Pinion Gear/Gear Ratio
Before you change the pinion gear ask yourself why you are doing it. In general, if you change to a larger pinion
the top speed will improve but you will see less acceleration and run time. This would only be advisable for really
long track layouts with few tight turns. Changing to a smaller pinion will give you quicker acceleration and possibly
a bit longer run time but a little less top speed. This would be good for real short layouts or when running hotter
motors. The pinion that is on the Mini-T offers the best balance of both. To change the pinion remove the gear cover,
loosen the motor screws, and slide the motor back. Use a pair of small needle nose pliers between the motor plate
and back of the pinion to push the pinion off. Place the new pinion on the end of the motor shaft and using the flat
of the pliers or a similar flat tool, push it on to the same position as the one removed. If you have changed the size
of the spur see setting the gear mesh below.
Warning:
When running after-market motors, check with the motor
Manufacture for correct gearing. Never over gear the motor as it can cause overheating, damaging it and the
speed control.
Setting The Gear Mesh
The motor screws should be slightly loose. Slide the motor forward allowing the pinion
gear to mesh with the spur gear. Snug (not tight) the bottom motor screw and try rocking
the spur back and forth. There is a slight bit of movement before the motor is forced to
turn over. If not, pull the top of the motor back slightly and recheck. If there is too much
slop between the gears push the top of the motor forward. When set properly the wheels
can be spun forward freely with very little noise. Make sure to tighten both motor screws
and replace the gear cover before running.
Page 6
Radio Replacement/Service
If you have a radio problem please call +49/1805/472876
for customer service.
Most likely unless you have gotten
the components wet the service technician can help you fix the problem over the phone. If the problem is more
severe you may be asked to send in the truck and transmitter or the entire radio system, which would include the
receiver/speed control unit and steering servo. In some cases, like a broken servo or a speed control that has failed
due to getting wet, your local dealer can sell you the re-placement component. The following is complete guide to
removing the system.
Steering Servo
Unplug the servo lead from the left side of the receiver. Remove the four
small screws that secure the servo mount/chassis brace to the chassis. Use
a screwdriver or small pliers to pop the steering link off of the servo and it is
free to be removed. There is no need to remove the servo mounts on either
side as all service can be done with them on. Replace in the reverse
sequence used to remove it.
Receiver/Speed Control (ESC)
Unplug the power lead, motor leads and steering servo. Carefully remove
the antenna wire from the antenna tube. Do not attempt to open the receiver
or electronic speed control (ESC) as only a factory technician has the proper
tools and parts to make any repairs necessary. The receiver/esc unit is
mounted with double-sided foam tape. Use your thumb and index finger at
the bottom of the front corners to pull the receiver/esc unit from the mount.
If this is difficult ask for help. If necessary, carefully use a large flat blade
screwdriver between the unit and the mount to pry it loose. Make sure you
remove any left over foam or adhesive before remounting with common
servo tape or hobby type foam tape.
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