X-6 Cubed Tuning Guide

K 030 X – 6 Cubed
Instruction Manual v1.0
Tuning Section Page 45
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slipper accordingly. On super high-bite surfaces, you’ll actually back the slipper off
some to prevent the car from pulling hard wheelies. The nice thing about slippers is the
ease of adjustment: have a friend take a ¼” wrench out to the track, and a few brief pit
stops later you can have the car completely dialed.
Adjusting the differential for track performance is a tougher science, especially since the
adjustment window is pretty small – less than full turn on the diff screw can go from too
loose to locked up. The idea is, the looser your diff is, the more corner speed the car
will carry. A tighter diff will have more forward bite – similar to a locked diff in a drag
car. Diff adjustment isn’t changed often but can be useful; always be sure the slipper
gives before the differential barks.
FRONT CASTER
The X – 6 Cubed Set-Up sheet calls for 30
o
caster blocks in U.K., 25
o
.on dirt. These
make a difference in steering on corner entry, exit, and through the corner. 20
o
blocks
available (ASC #9592); compared to the 30
o
, 25
o
takes away from turn in while adding
exit steering and 20
o
.goes even further. Once you settle on the blocks the suit your
driving style, there are other ways to gain steering without losing stability.
STEERING BLOCKS
One way to increase steering is to switch from the stock trailing axles to inline axles
(ASC #9623) and inline steering blocks (ASC #9577). When you install these parts,
move the spacer from behind the caster blocks to the front, and use the rear Ackerman
hole in the steering rack. These axles will give much more aggressive steering in and
out of the corner, though they sacrifice straight-line stability: they can make the steering
feel twitchy. To combat this twitchy feel, many X Factory drivers have experimented
with running the inline axles while leaving the caster blocks forward. This extends the
car’s wheelbase while taking some weight off the front tires, all of which smoothes out
the car’s steering. There are so many ways to skin this cat!
ANTI-SQUAT
Rear anti-squat is the angle of the rear hinge pins relative to the ground. Lowering the
rear toe-in block by removing spacers increases the amount of anti-squat in the car.
With the 2mm shim under the hinge pin brace and no rear spacers, the car has 4
o
of