Top Flite TOPA0500 - Manual (Page 49)

❏ ❏ 3. Shape the aileron LE to match wing.
❏ ❏ 4. Place a die-cut 3/32" balsa aileron core over the
plan and mark the location of the aileron ribs on both
sides. Test fit the aileron core to the wing.
Square up the
ends of the aileron core so they match the wing.
❏ ❏ 5. This step will be much easier if you set the wing
on the firewalls so the TE is facing upward. Using the
line you drew on the aileron LE as a reference, position
but do not glue the aileron core on the aileron LE. Use
a straightedge across the bottom of the wing to set the
position of the TE of the aileron core. When the aileron
core is in the correct position, it may not be exactly on
the straight line on the aileron LE but it should be near it.
❏ ❏ 6. After you have carefully set the angle and location
of the aileron core, glue it to the aileron LE. Glue a small
section at a time using your straightedge across the
bottom to make sure it remains at the correct angle.
❏ ❏ 7. Cut the aileron ribs from a 3/32" x 3/8" x 24"
balsa stick and glue them to the aileron core and the
aileron LE. Shape the ribs to match the shape of the wing.
❏ 8. Fit the other aileron to the right side of the wing the
same way. (Steps 1-7)
Let’s make the wing tips while the ailerons are “locked”
in position. This way your wing tips and ailerons will
accurately match. Do the left one first so yours matches
the photos.
❏ ❏ 9. If you haven’t done so already, sand the sheeting,
spars and LE even with tip rib W13 to accommodate the
left wing tip.
❏ ❏ 10. Glue a shaped 3/4" balsa wing tip to the left
wing. Study the plan and the wing tip carefully to make
sure you glue it on the right way.
❏ ❏ 11. Use a razor plane or a hobby knife with a
carving blade to roughly shape the wing tip.
❏ ❏ 12. Glue pieces of leftover 3/4" x 1/4" balsa to the
end of the wing tip and the wing as shown in the photo.
Note the grain direction.
❏ ❏ 13. Use the top and bottom sheeting to guide your
bar sander with 80-grit sandpaper to shape the top and
bottom of the wing tip so it matches the wing. Rest your
bar sander on the wing sheeting but only apply pressure
to the wing tip—not to the sheeting.
❏ ❏ 14. Final sand the wing tip by rounding the edges.
Round the LE of the wing to match the cross section on
the plan.
❏ 15. Make the right wing tip the same way.
- 49 -