18 BrainCube Aeromodels - Fugly Construction Manual
Wing - 3
Wing - 4
Top Wing Skin
Make sure the wing is totally flat to the board
before glueing on the wing skin, otherwise the
wing will end up twisted.
The skin should be held down with pins through
the skin into the balsa ribs and false LE while it
dries. Use tape to hold the rear of the skin down
to the spar.
Carefully sand the top of the False
LE to match the curvature of the
ribs. Ensure that the skin is glued
to every rib, the top of the False LE
and the top of the spar.
Spar, Wing hatch frame, R1a x 2
Once the top skin has been glued on and
fully dried, unpin the wing and flip over.
Carefully trim the tabs off the bottom
of the ribs, then pin back down to the
board upside-down, again through the
balsa building tabs ensuring it is flat to
the board.
Glue both R1a parts against the
plywood R1 ribs first. These parts
help support the wing skin.
When you glue the spar into place,
ensure that it is glued along it’s
entire length to the spar-web using
clamps.
Hatch
Frame
R1a
