Great Planes PT-40 MkII Kit - GPMA0118 - Manual (Page 43)

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F. Perform the same operation for the other side of the
stab and fin.
Applying windows.
Use the patterns on the fuse plan (or make your own
templates) to cut the window shapes from MonoKote film or
self-adhesive MonoKote Trim Sheet. After cutting the pieces
to size, wipe the area on the fuselage to be covered with
soapy water. A couple of drops of dish detergent to a cup of
water is sufficient. Peel the backing from the MonoKote film
or MonoKote Trim Sheet, then “float” the covering into
position. Use a piece of balsa wood to squeegee the
solution from underneath the window. Only work in one
direction, blotting moisture after each pass. Iron the film in
position if you have used MonoKote film.
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1. Start with the elevator and the stab. Cut the covering
from the hinge slots – don’t just slit the covering but actually
remove a small strip of covering the size of the hinge slot.
❏
2. Drill a 3/32" hole 1/2" deep in the center of each hinge
slot. A high speed Dremel Tool works best for this. If you
have to use a drill, clean out the hinge slots with your
#11 blade.
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3. Join the elevator to the stab with the hinges but don’t
glue yet. Confirm that the hinges are equally positioned in
both the elevator and the stab. You may insert a small pin in
the center of the hinges to keep them centered. Close the
hinge gap to 1/32" or less – it is better to have a
slight gap
to avoid inadvertently gluing the control surfaces together.
Remove the pins if you have used any.
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4. Add 6 drops of thin CA to the center of all the hinges
on both the top and the bottom.
❏
5. Join the rudder to the fin using the same procedures.
❏
6. Clean the aileron torque rod arms with rubbing
alcohol to remove skin oils or smeared petroleum jelly.
Do not use accelerator on any of the hinges. Do not
glue the hinges with anything but thin CA and do not
attempt to glue one half of the hinge at a time with
medium or thick CA. They will not be properly
secured and the controls could separate while the
model is in flight.
ASSEMBLE, THEN APPLY 6 DROPS
OF THIN CA TO CENTER
OF HINGE, ON BOTH SIDES
TEMPORARY PIN
TO KEEP HINGE
CENTERED
AWAY FROM THE SLOT
CUT THE COVERING
Join the Control Surfaces
FINAL HOOKUP AND CHECKS
43