elevators (26). Sand all of the surfaces to the shapes as shown
on the plans. Cut out the opening for the stabilizer in the fin.
On the right side of the fin, make the channels for the
elevator and the rudder flexible tubing. Glue in the tubing. At
the bottom of the stabilizer, in the locations shown, glue in the
1/4-inch balsa blocks (29) to hold the stabilizer support struts
Building the Wing
Cut out all of the ribs. It is important to accurately drill the
holes for the carbon-fiber tubes.
The wing is built in three sections. Begin building the outer
wing panels first. Because the individual sheets are only 30
inches long and the bottom wing sheet needs to be slightly
longer, glue on a 2-inch strip to get the 32-inch-long sheet.
Transfer the shape of the outer wing panel onto the bottom
sheet (56). Cut out the shape of the outer panel from this
sheet. Transfer the location of the spars and the ribs onto the
sheet. Glue the bottom main spar (52) and rear spar (53) to
the sheet. Position and glue ribs W4 to W9 to the spars and
to the sheet. Glue the top spars (52) and (53) to the ribs.
Between the W4 ribs, glue in the plywood sheer web to the
ribs and to the spars.
Cut the carbon-fiber tubes to the proper length and glue
them to the W4 ribs and to the plywood web. Put this wing
panel aside. Build the other wing panel to the same stage, and when it is complete, begin building the center wing section. Transfer the location of the spars and the ribs onto the bottom foam sheet (56). Glue the bottom main spar (52) and rear spar (53) to the sheet. In
the center of
the wing, glue
plates (54) to
the bottom sheet and to the main spar. Glue ribs W1 and W2
to the spars and to the bottom sheet. Glue the top main and
rear spars to the ribs.
The ribs have been glued in place and top spars
glued to the ribs. The top sheeting is being glued on.
Between the W2 ribs, glue the 1/8-inch-thick plywood sheer
web to the ribs and to the main and rear spars. Plug the outer
wing panels into the center panel to check the alignment. Flip
the wing panels on their backs and cut out the openings in the
bottom sheeting at ribs W2 and W6 for the 1/4-inch plywood
blocks (60) and (65). Glue the blocks to the ribs and to the
bottom sheeting (56).
The blocks (65) will hold the plastic or the aluminium clip
that holds the outer wing panels to the center panel. Glue the
top sheeting (57) to the ribs and to the center section spars.
Glue the two foam strips (58) to the center section LE. In
The spars are glued to the wing’s bottom skin. For easy alignment, the location of each rib is marked on the skin.
This shows the sheeting nearly completed. The wingtip section is
ready to be glued on.