Trio Avionics Wing Servo Mount Installation for RV-4 and RV-6 - Manual (Page 2)

Step 1:
Install tabs on the existing
bellcrank to provide for mounting the
servo push/pull tube. The image at right
shows the finished aileron bellcrank
installed in the right wing. Note the visible
aluminum tab that has been riveted to the
bellcrank that attaches the servo push/pull
tube. (There is a similar tab on top of the
bellcrank.)
Remove the bellcrank inspection panel
from the bottom of the right wing and mark
the bellcrank ends with “Aileron” and
“Control Stick” as appropriate. (This will
help with orientation when working on the
bench.) Remove the bellcrank being
careful to document the location of all the
hardware and spacers..
Right Wing
- view looking up and aft into inspection panel
Note:
All illustrations and references in this guide show the kit being installed in the RIGHT wing of
an RV6. Of course, the servo may just as well be installed in the left wing of the
airplane. Procedures for RV4s are identical.
Step 2:
Drill out the two rivets located on the CONTROL
STICK END of the bell crank. Align the servo push tube
mounting tabs to the bellcrank as shown below. Align the tabs
on the CONTROL STICK END of the bellcrank with the tabs
extending out from the long side (hypotenuse) of the triangle.
Corner of tab
should be flush
with bellcrank edge.
Edge of tab to be parallel with bell crank joggle
Using bellcrank as drilling
template,
align and drill tabs.