Great Planes Ultra Sport 60 Kit - GPMA0420 Pages 28-48 - Manual (Page 10)

fler) to the fuselage.
2. With the wing level, lift the model by the engine
propeller shaft and the bottom of the rudder (this may require
two people). Do this several times.
3. If one wing always drops when you lift, it means that
side is heavy. Balance the airplane by gluing weight to the
other wing tip. NOTE: An airplane that has been laterally
balanced will track better in loops and other maneuvers.
FINAL SANDING
Check over the entire structure carefully, inspecting for
any poorly glued joints, gaps and "dings". Apply additional
glue and/or balsa filler as necessary, then sand the entire
fuselage and wing smooth using progressively finer grades of
sandpaper.
7. Stab top
8. Fuse bottom
9. Wing fillets*
10. Fuse sides
11. Fuse top
12. Fin left side
13. Fin right side
14. Ends of ailerons
15. Bottom of ailerons
16. Top of ailerons
17. Aileron openings in wing
18. Wing fairings (on bottom of wing)
19. Bottom of left wing panel
20. Bottom of right wing panel
21. Top of left wing panel (overlap covering 1/4" at
wing LE)
22. Top of right wing panel (overlap covering 1/2" at the
center and 1/4" at the LE)
*When covering concave surfaces, follow the iron with
a damp cloth, pressing the covering down.
1. Temporarily attach the wing and engine (with muf-
GLUE THE HINGES
COVERING
Because it is assumed that you have had some previous
model building experience, we won't go into detail in regard
to the covering procedure. Follow the instructions included
with your covering material.
NOTE: When covering the fin and stab, begin by applying
1/2" wide strips of covering in the comers between the fin and
the fairing block, between the stab and the fairing block, and
(on the bottom of the stab) between the stab and the fuse sides.
Next cover the fairing blocks with pre-cut pieces of covering.
Finally, cover the stab and fin with pre-cut pieces that have a
straight edge to overlap (1/8"+ overlap) the strips you previously
applied. DO NOT, under any circumstances, attempt to
cut the covering material after it has been applied to the
fin and stab, except around the leading and trailing edges
and the tip. Modelers who do this often cut through the
covering and pan-way into the balsa stab. This can weaken
the stab to the point where it may fail in flight!
Recommended Covering Sequence:
1. Strips as described in above note
2. Rudder left side
3. Rudder right side
4. Bottom of elevators
5. Top of elevators
6. Stab bottom
1. Lay the rudder, elevators and ailerons on the plans
and mark on the leading edge of each part the locations of the
hinges, torque rods (and tailgear if you have built a tail-
dragger). Now use a sharp Xacto knife to cut slits in the
covering at the hinge locations. Trial fit the hinges to make
sure you have'' found'' the slots which you previously cut. In
the same manner, slit the covering at the hinge locations in the
wing, stab and fin TE. Also cut the covering away from the
torque rod and tailgear slots.
IMPORTANT - Use coarse sandpaper to roughen both sides
of the hinges for a good glue bond.
NOTE: When gluing in the nylon tailgear bearing and the
hinges, do not just smear glue on the hinge and push it into the
slot, as most of the glue will be wiped off as it is being pushed
in. You must also work some glue into the slot. A good way
of doing this is to scoop up some epoxy with a plastic soda
straw, then pinch the end of the straw, insert it into the hinge
slot, and squeeze the straw to force glue into the slot. Apply
epoxy to the hinge, then insert the hinge into the slot. We
recommend 30 minute epoxy for this process. After pushing
in the hinge, wipe away all excess glue with a tissue
dampened with rubbing alcohol.
2. Glue the hinges (and tailgear bearing) into the slots
in the wing, stab and fin TE using the above process and allow
the glue to harden before proceeding.
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