Owner manual
❏❏9. Prepare the top aileron skin by cutting out the
corrugations. Cut the corrugation fillers. Note that the
fillers extend from the front of the cutouts to
approximately 1/8" [3mm] from rear of the cutouts. Cut a
bevel on the aft edge of the fillers to accommodate the
fillers on the top skin, then glue the fillers into position.
Also note the two shorter corrugation fillers to
accommodate the control horn support. Test fit, then
glue the skin to the rest of the assembly. Trim aileron to
the length shown on the plan.
❏❏10. Mark a centerline along the aileron leading
edge and along the trailing edge of the wing where
the aileron goes. Cut hinge slots in the wing and
aileron where shown on the plan.
❏❏11. Bevel the leading edge of the aileron, then
test fit it to the wing with the hinges.
❏❏12. Glue pieces of leftover 1/8" [3.2mm] die-cut
balsa to ends of the aileron and shape to fit.
❏ 13. Return to step one and make the right aileron
the same way.
BUILD THE WORKING FLAPS
Build the left flap first.
❏❏1. The same as you have been doing all along,
cut out the corrugations from one of the die-cut 1/16"
[1.6mm] balsa flap skins.
❏❏2. Place the flap skin over the plan aligning the
corrugations. Use a ballpoint pen and a straightedge
to mark the location of the trailing edge support all
the way across.
❏❏3. Mark the locations of the flap ribs, then cut
the trailing edge support from a 1/8" x 1/4" x 30" [3.2
x 6.4 x 760mm] balsa stick. Note: Since the right
wing plan shows the fixed flap version, the locations
of the right flap ribs are indicated by the small
dashed lines. Glue the trailing edge support to the
skin along the line marked in the previous step.
❏❏4. Glue on the die-cut 1/16" [1.6mm] plywood
flap ribs. Cut the flap sub leading edge from a
3/16" x 3/8" x 18" [4.8 x 9.5 x 460mm] balsa stick,
then slip it under the notches in the flap ribs and glue
it into position with thin CA.
❏❏5. Cut off the flap skin along the front of the flap
sub leading edge. Cut the corrugation filler strips,
then glue them into position.
❏❏6. Trim the trailing edge of the flap skin as
necessary until the total width of the flap is 1-5/8"
[42mm], then bevel the trailing edge of the skin to
match the angle of the ribs.
❏❏7. Trim 3/4" [19mm] from the front and 3/16"
[4.8mm] from the rear of another flap skin. Cut
eighteen 1-1/8" [3.2mm] long corrugation fillers and
glue them to the inside of the skin so the front is even
with the front of the skin.
❏❏8.The same as was done with the corrugation filler
strips for the top aileron skin, bevel the aft end of the
corrugation filler strips on the top flap skin. Test fit the
skin to the flap assembly. Make adjustments where
necessary, then glue the top flap skin into position.
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