After properly fitting the wing halves together check for the
correct dihedral angle. Place one wing panel on a flat
surface and measure the distance from the elevated wing
tip to the tabletop. This distance should be 5-1/4" (135 mm).
Note:
You will need to hang the aileron servo off the edge
of the table in order to get the wing flat on the table as
shown in the sketch above.
❏
4. When satisfied with the fit and the dihedral angle, use
30-minute epoxy to thoroughly coat the root rib of both wing
halves and the wing joiners. Be sure to apply a generous
amount of epoxy into the inside of each of the wing joiner
pockets.
Important:
Make sure the joiners are fitted
upright
to ensure the proper dihedral. Then, join the wing
halves, holding them together tightly. Use a paper towel,
dampened with alcohol, to wipe away excess epoxy that
comes out of the joint. Securely hold the wing together with
masking tape, making certain both halves are in full contact
and that the leading and trailing edges align. Using the
same 30-minute epoxy, coat the holes in the front of the
wing and the ends of the two 3/8" (9.5mm) wood dowels.
Then, insert them into the front of the wing assembly as
shown, leaving 1/2" (13mm) of the dowel extending from the
wing. You can use rubbing alcohol for any epoxy clean up.
Do not disturb the wing until the epoxy has fully hardened.
❏
1. If you haven't already, cut the covering away from the hole
in bottom of the top wing center section and feed the string,
which is taped to the sheeting, through the hole in bottom of
the top wing center section. Retape it securely near the hole.
❏ ❏
2. Locate two of the four shaped joiners and test fit the
left wing half and the center section together with the two
shaped joiners in place. Note that you will be using the large
joiner in the front of the wing and the smaller one in the rear
of the wing. Notice the placement of the angles of these
joiners that allows the wing to taper back from the center
section (when positioned properly). Should the fit not be
correct, carefully sand the ends of the joiners to allow a
proper fit. The top wing has no dihedral and is totally flat.
❏ ❏
3. When satisfied with the fit, glue the joiners into the left
wing panel using 30-minute epoxy. Place a generous amount
of epoxy into the inside of the pockets and on the half of the
joiners that will be inserted into the wing pockets. When the
epoxy has cured, tie the string in the center section to the
aileron servo extension wire as shown in the photo above.
Join the Top Wing
12
