There are several ways to attach the twin stab servos
to the ply plate that is pre-installed in the fuse. FB
supplies wooden blocks with L brackets, you can buy
a commercial side mount, or make your own side
mount from ply. I elected to make my own out of ply.
Attach your servos (8611A used here) to a
matchmaker and attach heavy duty or metal arms
such that they are approximately mirror images of
each other.
Bolt servos to mounting bracket. Do not use the
rubber grommets, as you are looking for minimal
servo movement..
Make sure your linkages are equal in length.
Working one stab at a time, attach linkage to arm,
tape stab in neutral position, set servo arm at center
point (vertical) and mount to ply plate. Make sure
linkage is line up straight between servo and horn. In
the mounting method shown here, the servo brackets
were glued to the plate with 6 minute epoxy.
Repeat for the other stab, making sure the installation
mirrors the other side.
Aft Wiring Harness
Make up your aft wiring harness, You will need
extensions for both stab servos and a rudder servo,
plus air line for speed brake open and speed brake
closed. I use nylon wrap to better protect the wires
from heat in the aft section around the pipe.
Determine length based on the placement of your
equipment. I made the harness long enough to allow
the stabs and rudder servos to be plugged in at the aft
former to allow for easier maintenance in the future.
FEI BAO T45
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