Dynaflite PT-19 - Manual (Page 16)

35. Build the left wing panel.
36. Prepare the wing panels for joining by
cutting a 1/16" wide slot in front of and behind the
spars on W1 as shown in the photo.
39. Measure the distance under the left wing tip
at the bottom of rib W11. If it is 8-3/4" you have
exactly 6 degrees of dihedral in each panel. Don't
be concerned if it is a little off as the dihedral angle
is not at all critical. If it is off by more than 1 /2" you
might want to find out why, but you don't really need
to fix it. When you are satisfied, glue the dihedral
braces to the left wing panel with 30-minute epoxy.
40. Using 3/32" x 3" x 36" balsa, sheet the top
center of the wing from W3 to W3. The strength of
the center section is important so we recommend that
you use aliphatic resin. Note in the photo that we
used one continuous piece across the entire center
section. This greatly increases the strength of the
joint, but it is a bit harder to install this way.
37. Test fit the 1/16" ply dihedral braces to the
wing panels. Note that the shorter ply brace goes on
the forward side of the spars. When satisfied with
the fit, glue the braces to the right wing panel with
30-minute epoxy. Remove the left panel and clean
off any epoxy that seeped out from the joint.
38. After the epoxy has cured, slide the left panel
back into position. Position the right panel flat on your
building board and prop the left tip off the building
board. Don't you wish your surface was longer!! 1. Cover the right wing panel with wax paper.
Cut the lower LE sheet from a 3/32" x 1/2" x 24"
balsa stick and pin it to the plan.
16