Owner manual
❏❏12. Remove the top spar from the assembly.
Apply a bead of medium or thick CA along the top
edge of the spar web, then reposition the top spar.
Make sure W2 is still at the correct angle using the
dihedral gauge.
❏❏13. Glue the die-cut 1/8" [3.2mm] balsa inner
sub leading edge into position.
❏❏14. Prepare the top of the wing for sheeting by
trimming and sanding the sub leading edges, the
aileron bay sub trailing edge, the flap bay trailing
edge and the top spar even with the tops of the ribs.
❏❏15. Trim one of the aft skins to fit the wing so
that the front edge aligns with the middle of the top
spar and the aft edge aligns with the middle of the
flap bay sub trailing edge. The skin should extend
1/16" [1.6mm] or so past the aileron bay sub trailing
edge to allow for trimming later.
❏❏16. Glue the aft skin into position. Aliphatic resin is
recommended as it will allow time for positioning. Use
weights and T-pins to hold the skin in position while the
glue dries.The rest of the trailing edge between the W9
ribs at the wing tip will be sheeted later.
Refer to this photo for the following two steps.
❏❏17. Cut and trim one of the forward skins to fit
the wing, then glue it into position. Use a piece of
leftover sheeting for the small corner at the leading
edge where the front sheet won’t reach. Use weights
and/or T-pins to hold the sheeting down while the
glue dries.
❏❏18. If not building flaps, test fit one of the die-cut
1/16" [1.6mm] balsa flap skins to the wing. The trailing
edge of the skin should extend 2-1/8" [54mm] aft of the
top wing skin. Cut out the slots for the corrugations and
trim the flap skin as necessary for a good fit, then glue
the skin into position. If you are building working flaps,
trim a 7/16" x 17-3/4" [11 x 435mm] strip from a piece
of leftover 1/16" [1.6mm] hard balsa. Glue the strip over
the flap bay trailing edge.
❏❏19. After the glue on all of the wing sheeting has
dried, remove the wing from the building board.
Refer to this photo for the following two steps.
❏❏20. Flip the wing over and lay it on your
workbench. Cut two 3-3/4" [95mm] long landing
gear rails from the 1/4" x 1/2" x 16" [6.4 x 13 x
410mm] basswood stick. Use 30-minute epoxy to
glue the rails into position. For additional strength,
milled glass fibers could be added to the mixture.
This will allow you to build up small fillets without the
glue dripping away from the joints.
❏❏21. While the epoxy on the landing gear rails is
hardening, make the servo hatch rails from a 1/4" x
3/8" x 36" [6.4 x 9.5 x 910mm] basswood stick and glue
them into position. Be certain to glue the aileron hatch
rails in the two inboard W8 ribs as shown on the plan.
Note: If not building working flaps, there is no need to
cut and glue in the servo rails for the flaps.
❏ 22. Return to step 4 and build the right wing panel.
Don't forget to build over the right wing plan.
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