Traxxas T-Maxx 4910 Owner's Manual page 38

Adjusting Your T-Maxx
Once you become familiar with driving your T-Maxx, you might
need to make adjustments for better driving performance.
Adjusting the Slipper Clutch
The T-Maxx features an adjustable slipper clutch on the spur
gear to help protect the drive train from sudden shock loads
(such as landing off of jumps with the engine at full throttle).
Under normal conditions the slipper clutch should not slip.
Before adjusting the slipper clutch, turn the model off. Do
not adjust the slipper clutch while the engine is running.
Use the supplied glow plug (universal) wrench to tighten the
slipper nut (clockwise) until it stops, and then back the nut out
1/4 of a turn. If you notice any decrease in performance after
making changes to the slipper clutch adjustment, then it may
be too loose. The slipper must not be allowed to slip during
normal acceleration or the slipper could be damaged.
Adjusting the Two-Speed Transmission
The T-Maxx comes equipped with a two-speed transmission.
When the shift point on the transmission is adjusted correctly, it
will maximize acceleration and improve drivability. If necessary,
use the supplied 2.0mm hex wrench to adjust the shift point.
1. Stop the engine.
2. Remove the large rubber plug from the transmission housing.
3. Look into the hole in the
4. Once the access hole is
38
transmission housing
and rotate the spur gear
HOLD
until the access hole in
the aluminum drum is
visible.
visible, hold the spur
gear and use your finger
to turn the primary gear
shaft which extends from the transmission housing.Turn it
clockwise. Note that you will see two set screws pass under
the access hole. As you slowly
turn the primary gear shaft
counterclockwise, the first set
screw that becomes visible
holds the two-speed
mechanism on to the shaft. Do
not loosen this screw.The
second set screw is the
adjustment screw.
5. Insert the 2.0 hex wrench
through the clutch drum and
into the adjustment set screw.
6. Turn the adjustment screw 1/8 turn clockwise to raise the
shift point (later shifts). Be careful
not to over tighten the
adjustment screw or you may
damage the tension spring.
Do not make constant
adjustments or you will loosen
the screw's locking device.
7. Turn the adjustment screw 1/8
turn counter-clockwise to lower
the shift point (earlier shifts). Be
careful not to loosen the
adjustment screw too much or you may cause the screw and
spring to fall out (requiring major disassembly and repair).
8. Use 1/8 turn increments to find the approximate,
desired shift point.
Primary Gear Shaft
9. Check performance by running a test lap after each
adjustment.
10. Use 1/16 turn increments to fine-tune the shift point.
11. Be sure to reinstall the access plug to prevent dirt from
entering the transmission.