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SteP 4: inStallinG tHe MotorS
1
- Remove the three M3 x 8mm cap screws that hold the gear cover in place, then
remove the gear cover and set it and the cap screws aside for now.
5
- Connect the steering link rod to the servo arm, using one M3 x 18mm cap screw, one
M3 tapered collet and one M3 lock nut as shown.
IMPORTANT:
The cap screw is installed through the back of the servo arm and the
tapered collet is installed against the front face of the servo arm
(a)
. The narrow side
of the tapered collet should be toward the inside of the ball link.
6
- Repeat steps 1~5 to fit the second steering servo to the other servo mount and the
steering linkage assembly. Once you're finished, unplug the radio control system and
set it aside.
IMPORTANT:
If the steering knuckles are not straight after you connect the steering
link rods to the servo arms, don't worry about it now. We'll tell you how to adjust them
correctly later in the chassis setup section.
2
- Fit one pinion gear onto one motor, making sure that there is no more than a 1mm
gap between the end of the pinion gear and the motor (see left).
IMPORTANT:
Install the pinion gear so that the grub screw is toward the
outside
of
the motor
(a)
. This will ensure that the pinion gear and the spur gear will mesh properly.
IMPORTANT:
Tighten the grub screw against the flat spot on the motor shaft and
apply locktite to the grub screw to prevent it from loosening during use.
3
- Slide the motor into the gearbox and secure only the bottom of the motor into place
for now, using one M3 x 8mm F/H machine screw.
IMPORTANT:
Don't tighten the F/H machine screw completely. You want it slightly
loose so that you can pivot the top of the motor back and forth to set the gear mesh.
4
- Push the top of the motor forward so that the pinion gear meshes with the spur gear.
The gear mesh should be set so that when the axle is turned, the movement should
be smooth. If the movement is 'ratchety', the gear mesh is too tight. When satisfied
with the alignment, install and tighten the M3 x 8mm cap screw into the top of the
motor, then tighten the M3 x 8mm F/H machine screw from step 3 above.
PRO TIP:
If you have a problem meshing the pinion gear with the spur gear, spin
the axle slowly to turn the spur gear. While the spur gear is turning, push the top of
the motor forward and the pinion gear will mesh with it.
A
A
1mm
