❍
7. Glue the two 8mm square x 38mm aileron servo tray
mounting blocks that you cut to shape earlier to the aileron
servo tray. Be sure that you glue the flat side of the blocks to
the aileron servo mounting tray.
❍
8. Place the servo into this assembly and test fit this into
location in the center of the wing. Mark the location of the
mounting blocks with a felt-tipped pen.
Use a sharp #11 blade to cut the covering from the wing for
the aileron servo mount. Be extremely careful to cut only
the covering and do not cut into the balsa wood under the
covering.
Be sure to place the aileron servo lead in the cut out you
made in an earlier step. Glue the servo mount to the wing
with 6-minute epoxy.
❍
9. Assemble the servo using the four servo grommets and
four brass eyelets as shown in the sketch above. Insert the
servo into the mount and mark the location for the 4 screws.
Remove the servo and drill 1/16" [1.6mm] holes through the
servo mount for the servo mounting screws.
Run the servo mounting screws into the mount and then
remove them, which will make threads in the wooden servo
mount. Add a drop of thin CA to the holes and allow to fully
harden, thus hardening the threads for more strength. Note:
Do not apply the thin CA with the servo in place as you will
glue it to the mount. Mount the aileron servo using the servo
mounting screws.
❍
10. Thread nylon torque rod horns onto both aileron
torque rods until the top of the horn is even with the top of
the torque rod as shown in the photograph.
How to cut covering from balsa.
To avoid cutting into the balsa, use a soldering iron instead
of a hobby knife to cut the covering from the stab. The tip
of the soldering iron doesn't have to be sharp, but a fine tip
does work best. Allow the iron to heat fully. Use a
straightedge to guide the soldering iron at a rate that will
just melt the covering and not burn into the wood. The
hotter the soldering iron, the faster it must travel to melt a
fine cut. Peel off the covering.
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