Building Instructions JIMMY
Page of
9
20
Wing
The wing will be built on top of the drawing, so start by getting a building board made out
of a piece of mdf or
chipboard of sufficient size
for one half wing. Stick the
drawing to the building board
with tape, and cover the
drawing with transparent
plastic sheet to prevent
glueing the parts to the
drawing. As an alternative,
you can cover the drawing
with tape where parts will be
glued together and touch the
drawing, i.e. all ribs to the
lower spar and to the trailing
edge. The leading edge will
stay clear of the drawing, so
no need to protect the drawing there.
Fix the 6x6 mm lower spar to the building board with pins. Accurately cut a piece of 1.5
mm balsa to size for the planking of the root part and glue it to the lower spar. Fix this
planking to the building board with pins. The trailing edge consists of a lower and an
upper part made from 1.5 mm balsa sheet. Cut the lower part to size, and glue it to the
rear edge of the planking and fix the rest of it with pins. Ensure that the lower trailing
edge sits flat on the drawing board and exactly matches the spanwise lines on the
drawing (a little oversize on the ends is ok).
Glue the 9 outer ribs (2 mm balsa) to
the lower spar and the trailing edge
in the positions indicated on the
drawing. Ensure that the ribs stand
square to the building board and that
the bottom edge of each rib rests on
it.
