K021 Instructions v1.0
Tuning
Page
77
Raising the transmission will give your truck more forward bite. It effectively stiffens the
rear of the truck, which means the truck will break loose sooner in corners and will
bounce more over washboards or small bumps. A softer rear shock package is
generally recommended when running the transmission high. Lowering the
transmission does the opposite: less forward bite, but greater side bite and a smoother,
more stable truck over rough sections.
FRONT AND REAR TOE ADJUSTMENTS
Toe-in (or out) is the angle of the tires to parallel when viewed from above. Zero
degrees of toe is when the tires are parallel to each other; toe-in is when the front of the
tires point toward each other, and toe-out is when the front of the tires point away. Toe
in the front of the truck is very easily adjusted by turning the steering tie-rods between
the steering rack and the steering blocks. The front tires are generally run with zero
degrees of toe. Adding some toe-out will increase the initial steering in the truck, but
can feel twitchy and wander-y. Toe-in will stabilize the truck, especially out of turns, but
slows down the steering response and slightly decreases corner speed.
The rear tires are always run with toe-in, but the amount can be changed. It is adjusted
by switching the rear toe-in block (installed in step E13). More rear toe-in (the 4
o
block)
gives the truck more forward traction but makes it harder to pivot the truck. Less rear
toe-in (the 3
o
block) will let the truck flow through corners and pivot well, but at a loss of
stability off the line and out of corners.
CAMBER
Camber describes the angle of the tire from vertical when viewed from the front or back.
If the top of the tire leans out past the bottom you have positive camber; if the tire leans
in at the top it has negative camber. A good starting point is to have -1
o
of camber all
around; the team generally runs between 0 and -3
o
. In general, more negative camber
