18
☛
It may be necessary to remove a small amount
of material from the bottom of the sub-fin so it will
line up properly. If so, use 220 grit sandpaper with a
sanding block.
❑
16) Once you are satisfied that the sub-fin is
aligned correctly, mix a small amount of Kwik
Bond 5 Minute Epoxy. Remove the sub-fin and
apply a thin layer to the bottom and sides of the
mounting surface.
❑
17) Set the sub-fin back into place and realign
it. Hold the sub-fin in place using several pieces of
masking tape and double check your measurements
once more before the epoxy cures. Remove any ex-
cess epoxy using a paper towel and rubbing alcohol.
Allow the epoxy to fully cure before proceeding.
MOUNTING THE TAIL BOOM
❑
18) Slide the end of the tail boom assembly over
the hardwood post in the back of the center pod.
❑
19) Align the horizontal stabilizer with the wing.
Look carefully from the front of the center pod at
both the wing and the stabilizer. When aligned prop-
erly, the stabilizer should be level with the wing. If it
is not level, rotate the tail boom until you are satis-
fied with the alignment. See figure # 2 below.
Figure # 2
❑
20) When you are satisfied with the alignment,
use a pencil and draw a mark on both the tail boom
and the center pod. You will use this mark to realign
the tail boom later. See photo # 32 below.
Photo # 32
❑
21) Remove the tail boom assembly. Using 220
grit sandpaper, carefully roughen the inside surface
of the tail boom where it will be glued to the hard-
wood post.
☛
Roughening the smooth surface will make the
glue joint stronger.
❑
22) Mix a small amount of Kwik Bond 5 Minute
Epoxy. Apply a thin layer of epoxy to the outside of
the hardwood post and to the inside of the tail boom.
❑
23) Slide the tail boom assembly back into place
and realign it. Hold the tail boom assembly in place
using several pieces of masking tape and double check
the alignment once more before the epoxy cures. Re-
move any excess epoxy using a paper towel and
rubbing alcohol. Allow the epoxy to fully cure be-
fore proceeding.
TOOLS AND SUPPLIES REQUIRED
❑
Kwik Bond Thin C/A
1
CONTROL SURFACE HINGING
HINGING THE ELEVATOR
❑
1) Locate the four precut hinge slots in the trail-
ing edge of the horizontal stabilizer and the leading
edge of the elevator.
❑
2) Using a modeling knife, carefully remove any
excess covering material from over each of the hinge
slots.
❑
3) Test fit the four C/A hinges into the hinge
slots in the elevator. Each hinge should be inserted
far enough into the slots so that the centerline of the
hinge is flush with the leading edge. If the hinges
cannot be inserted deeply enough, use a modeling
knife to carefully cut the hinge slots deeper. See
photo # 33 below.
Photo # 33
A=A-1
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