BMI Racing Copperhead 12 - Manual (Page 9)

Insert the IRS precision ride height adjuster cams into
the rear alloy pod plates. Insert a 3/8” x ¼” flanged
bearing into each ride height adjuster and insert the
axle as shown. Note that the left clamping hub has
the shallow center boss out towards the wheel. This
is necessary to have symmetrical wheel spacing.
Install your favorite wheels and measure the width of
the car. Shim as necessary to obtain a centered axle
and a 172mm rear track width.
Special Note:
The Copperhead 12 is designed to work with IRS
precision ride height adjuster cams. We find too
much size variation in other cams and cannot
guarantee they will fit properly.
Step 22
For most conditions we run the servo on the
angled mounts.
Step 23
Step 24
If you are looking to run the servo flat, you will need to
use black medium ball studs on the steering spindles
to remove bump steer. This form of servo mounting
will give the effect of being more smooth and easier
to drive.
You have two servo mounting options with the
Copperhead 12, Angled or Flat. The BMI Servo
Mounts have holes to allow either mounting option.
The servo is mounted to the servo mounts with two
4-40 x ¼” button head screws.