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3) Wing:
a) Decide which wing will become the left, and which the right. It is
important to make sure that you end up with one of each! On the
bottom of each wing, measure out the position for the 3 outer ribs. The
innermost rib on each wing will get glued on later. Place a mark for the
ribs at 7”, 13” and 20” from the inside edge respectively. Gently roll the
wings over the PVC pipe concentrating near the leading edge. Check
your airfoil with the ribs to see what you’re working toward. You may
need to complete the leading edge of the bend with your thumb and
forefinger.
b)
c) The easiest way to clamp the ribs in place while gluing is with scotch
tape. Simple pull out a piece of tape about 3” long, and fold over a
small bit at each end (to later allow you to peel the tape off.) Place one
of these pieces of tape half on, and half off the top of the wing at the
leading and trailing edge where each of the ribs will go. When you’re
ready to glue, push the rib into place, then pull the tape over the edge,
around the rib, and press it into place. Do this at the leading and trailing
edge of the rib, and the tape will hold it in place so you can move on to
the next rib. Complete the 3 outer ribs on each wing before proceeding.
d) Assemble the two innermost ribs to the two dihedral braces. Keep in
mind that the larger brace goes towards the rear of the plane, and the
smaller one in the front. The tops of the dihedral braces should fit flush
with the top of the ribs, and they should be spaced outwards so that the
braces will help keep the wing aligned when in place on the fuselage.
