Trio Avionics Wing Servo Mount Installation for RV-4 and RV-6 - Manual (Page 6)

Servo mounting holes
Angle should be flush along the top
and sides of reinforcement plate
STEP 7:
Trim or file a small amount,
approximately 1/16 th -1/8th inch, from the
(30 degree) flange on the bottom of the
plate. Once installed, no contact with the
spar flange will be possible, eliminating
any chance for wear or corrosion.
Trim or file
from flange
edge
Clearance provided by
trimming in step 7.
Your reinforcement plate may have up to nine large (.375”) holes drilled (as shown below) in
it to allow the servo to mount flush against the reinforcement plate. ONLY THE SEVEN
SMALL PILOT HOLES WILL BE DRILLED THROUGH THE SPAR. Four that attach the
servo and three across the top of the reinforcement plate. The three across the top of the
plate also secures the reinforcement angle on the front side of the spar. (See images on next
page)
Servo mounting holes
(enhanced for clarity)
Back drilling of reinforcement
Angle as described in STEP 6E.