Mazda Chassis Tuning, Руководство по установке, Страница: 4 / 9

Step #6 (Scaling)
I assume you have been on the scales this whole time, the extra height helps for all the floor
work you needed to do. Some even setup their scales to coincide with a lift, that’s great as
long as you check everything to make sure it is square.
First, let’s record the total weight of the car. Add/subtract ballast now. Once it is where you
are comfortable we can move on to the scaling.
We will only be dealing with percentages not the actual weight numbers. We will never get
the corners to even out AND have a level platform for the suspension. So, we change
balance with percentages on this car. Percentage to total weight is a common feature on
most scales (as everyone else in racing uses them too). This is what I will be referring to from
here on out.
Record the Cross (always defined as the left rear and right front to total) weight %
Record the left to right %
Record the front to rear %
Trade offs have to be made so we will concentrate on Wedge (cross weight) while
maintaining ride height.
NOTE: If a car has 49% of CW (cross weight) it is considered de-wedged. If it has 51% CW
it is considered wedged. De-wedge helps the car turn left while tightening up the balance on
rights. Vise versa with 51% wedge. I’ll explain it more later.
The fun begins! You are either REAL lucky and have a 50% car, it happens, or you see a car
that is wedged or de-wedged. Based on your CW %, you need to make adjustments to the
spring perches. The following procedure is crucial, a must. Keeping the ride height the
same is your friend on track and in doing this setup. Forget what your brain tells you, just do
what I say for this part.
If you are de-wedged (less that 50%) you need to do the following.
Up on the LR & RF
Down on the RR & LF
Make the adjustments in equal turns up and down (from whole turns to quarter turns). This will
increase the CW with hardly any ride height change. One round is about 1.2%, your car may
differ. Get it exactly 50%, not 50.1 or 49.9, 50.00%.
If you are “wedged” (more than 50%) you need to do the following.
Up on the RR & LF
Down on the LR & RF