Suspension adjustment, Step 10 – BMI Racing Double Wishbone Front End User Manual

Page 3

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Step 10

Put the 2 enclosed gray standoffs on top of the inner front pivot balls as shown. Lay the upper hinge pin block
on top of them and attach using 2 4-40 x ½ inch flathead screws. Then install steering blocks by threading the
upper and lower pivot balls onto the set screw running through the steering blocks. The picture in the top right
side shows the way it should look when completed.

CONGRATULATIONS!! YOU ARE DONE!!

Go out and race. Check out the setup tips below

Set Up For Carpet:

1.5mm flex plates with set screw in stiff position

#4 shurlube in damper tube

3.25mm ride height

.75mm up travel for droop

1 degree camber

6 degrees caster(2 shims to back)

Angled servo and set for no bumpsteer

Suspension Adjustment

To set your ride height, back the droop screws

out so they do not touch the sub plates. Then
use the set screws in the flex plates to adjust
your ride height. Tightening the set screws in
the flex plates will raise your ride height and
loosening them will lower it. Once you adjust
your ride height, then you want to tighten your
droop screws just enough so that you have your
desired amount of up travel. Do not use the
droop screws to adjust your ride height as this
will preload your flex plates and you will lose all
of your droop.

Once you have your ride height set and your

droop roughly set, You will now want to fine tune
and accurately set your droop. I normally run .5-
1mm of up travel for droop. When your car is
race ready and at ride height, slide the tip of
your exacto blade under the center of the front
of the car. Slowly lift the front of the car with
your exacto blade. What you want is for the
wheels to leave the ground at the exact same
time. You can adjust the droop screws until this
happens. Once complete, recheck your ride
height and up travel.

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