30 • T-MAXX
TUNING ADJUSTMENTS
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 transmission housing and rotate the spur
gear until the access hole in the aluminum drum is visible.
4. Once the access hole is
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 counterclockwise 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.
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.
Adjusting the Toe-in
Your T-Maxx comes from the factory with zero degrees of toe-in in the
front, and one degree of toe-in in the rear. You can adjust the toe-in on
the front and rear of the truck. Set the steering trim on your transmitter
to neutral. Now, adjust your steering turnbuckles so that both front
wheels are pointing straight ahead and are parallel to each other (0
degrees toe-in). This
will ensure the same
amount of steering in
both directions. Adjust
the rear toe control links
so that the rear wheels
have 1˚ of toe-in.
Primary Gear Shaft
0°
0°
1°
1°
-1°
-1°
49104-1-KC2230-R00-T-Maxx-Operating.indd 30
10/30/14 5:10 PM
