Owner manual
Refer to this photo for the following two steps.
❏ 12. Both sides of the center panel will be sheeted
in two sections—with the seam centered over the
main spars. With the assembly accurately aligned
over the plan, start by sheeting the aft section with
one of the skins you prepared earlier. The skin
should be trimmed so that the aft edge aligns with
the trailing edge depicted on the plan and the front
edge aligns with the middle of the top spar. Glue the
skin into position—aliphatic resin is preferred as it
will allow time for alignment. Thick or medium CA
could be used, but you’ll have to work quickly.
❏ 13. Glue the forward sheet into position.
❏ 14. After the glue has dried, remove the center
panel plan from the building board. Carefully cut the
jig tabs from the bottom of the ribs. Sand all the parts
even with the ribs and bevel the underside of the
trailing edge of the top sheeting to the same angle as
the ribs to accommodate the bottom sheeting.
❏ 15. Using the holes in the wing bolt blocks as a
guide, drill a #7 hole through the top sheeting.
❏ 16. Drill 1/16"[1.6mm] pilot holes through both
punchmarks in the center leading edge. Enlarge the
holes for the wing dowels with a 1/4"[6.4mm] drill.
❏ 17. Glue pieces of leftover 3/32"[2.4mm] balsa
inside the wing where shown. Cut or drill 1/2"[13mm]
holes for the servo wires and air lines.
❏ 18. Cut the trailing edge support from a 1/8"x
1/4"x 30"[3.2 x 6.4 x 760mm] balsa stick and glue it
into position. Bevel the support to match the shape of
the bottom of the wing.
❏ 19. Select the hardest of the remaining 1/16"x 3"x
30"[1.6 x 75 x 760mm] balsa sheets. From this sheet,
cut the shear webs as shown on the plan for the
front and back of the spars on both ends of the panel.
Glue the webs into position.
❏ 20. Sheet the bottom of the center panel in two
sections the same way you sheeted the top.
❏ 21. Trim the sheeting and spars even with the ribs
on both ends of the center panel. Sand the sheeting
flat and even.
❏ 22. Remember when you were instructed to cut
part way through the ribs on the ends of the panel?
Now is the time to cut the rest of the way through the
ribs along the lines and remove the material between
the spars.
Now the center panel is complete and may be set
aside while building the outer panels.
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