Owner's manual

❏ ❏ 13. Glue a piece of 1/8" leftover balsa to rib

W-2 to support the turbulator spars. Trim the ends

of the spars so they are even with the end of the

panel at rib W-4.

❏ 14. Glue the turbulator spars in the left wing

panel the same way.

❏ 15. Use a bar sander and 220-grit sandpaper on

both inner wing panels to carefully remove any glue

blobs and blend all the ribs to the spars, TE and LE.

Join the Outer & Inner Wing Panels

❏ 1. Remove the burrs and chamfer the ends of

the four 1/16" x 5" wing panel joiner wires with

a metal ﬁ le or a powered hand tool and a cut-off

wheel. Remove any oil from the wires left from the

manufacturing process with a cloth dampened with

alcohol or other solvent. Thoroughly roughen the

wires with 150-girt sandpaper so the glue will stick.

❏ ❏ 2. Test ﬁ t the right inner wing panel to the

right outer wing panel. If necessary, use your bar

sander to adjust the ends of the spars, LEs or TEs

for a good ﬁ t.

❏ ❏ 3. With the mating W-4 ribs contacting each

other and the inner wing panel laying ﬂ at on your

building table, rib W-15 of the outer panel should be

approximately 4" off the table. If necessary, adjust

the ends of the spars at the W-4s to achieve the

approximate 4" measurement.

1/16" Holes

❏ ❏ 4. Use a hobby knife or a 1/16" drill to make

two holes in both W-4 ribs to accept the wire wing

panel joiners. Bend, then test ﬁ t the joiner wires.

Adjust the bends so the wires accurately match

the “bend” in the wing and fully contact the spars.

❏ ❏ 5. Apply a thin ﬁ lm of epoxy to the W-4 ribs,

then join the two panels with the joiner wires.

Support the tip the same way you did when you

joined the inner panels. Place a sheet of wax paper

under the wing to protect your building board from

excess epoxy, then clamp the W-4 ribs together.

Wipe away excess epoxy before it cures. Do not

apply epoxy to the joiner wires until instructed

to do so.