11
TAIL FEATHERS
24.Next glue the front of the box,then the top. Lightly apply
epoxy on all firewalls area as well as the battery box so the
plywood could be fuel-proof. Just mix the epoxy with
some alcohol then brush on firewall.
25. Install the sideframe bulkhead as shown.
Tail Feathers
26. Remove the elevator from the horizontal tail;carefully use
hobby knife to cut away the covering as shown.
27.Locate the elevator torque rod;add lubricant oil to the first
and third hinges. You may spray WD-40 on the hobby knife
then use the knife tip to contact the hinge and torque shaft
and the oil will go in. Cut away the covering of trailing
edge at the horizontal tail root where the torque rod is
going to be installed.
28.Locate two fiberglass tubes,do right tail half first and make
sure two FRP tube are well positioned in place.The short
tube is in the front(leading edge) and the long tube is in
the rear( trailing edge). The tubes are tight fit to the holes
of the tail half, do not push too hard when inserting the
tube or it may hurt the rib or doubler inside. If rib or
doubler is broken then it may cause serious crash. Make
sure the tubes are all the way in and go through the ribs
then stop by the rib doubler. You may wisely to make mark
on two tubes near the tail root. Install the tail on fuselage
then trial fit the left tail half.After you are satisfied with the
tail joint then remove the tails and tubes. Epoxy the two
tubes in right tail half at the mark you made.Wipe off the
excess epoxy from the tail root. Never trim the tubes as
they are just right in length for this assembly.
29. Sand the glue area of the fuselage, next mask-tape the
horizontal tail halves then epoxy the horizontal tail halves
in place as shown.When cured, install the two elevators;
the torque rod goes in the fuselage first then insert all
hinges in place then apply CA glue when satisfied. Thread
the torque link on the torque rod. You may install the
torque link first but you will have to enlarge the torque rod
hole on fuselage.
The photo shown is without planking.
Mark
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