8
Position outboard and inboard panels together at polyhedral
joint. Raise wing tip end of outboard panel 4” off work
surface. With outboard spars touching inboard spars, glue
outboard spars to ribs.
Position 3/32” x3” wire on back of spars as shown, and
mark wire location on spars. Carefully groove spars for wire
and brass tube respectively, as shown in TIP OPTION
detail on plan.
Tack-cement wire to outboard spar, and brass tube to
inboard spar. Plug wing panels together, re-check wing
tip height (4”), and observe that wing structures butt evenly
at polyhedral joint. If corrections are necessary, rework
grooves slightly, then reglue metal parts in place.
Position the #9 ribs on spars and plug wing panels together.
Butt these ribs at the polyhedral joint, tilting them slightly
towards the inboard panel, so that they match the spar
angles. Carefully glue ribs to their respective wing panels.
BE CAREFUL TO AVOID gluing the panels together.
Remove outboard panel. Using 3/4” wide nylon fabric and
CA or Epoxy, securely bond wire and brass tube
in place. Securely glue #9 ribs in place.
Add gussets.
NOTE:
Later on, after wing parts have been covered, the
removable tip panels are fastened to inboard wing sections using
vinyl electrical tape. This tape holds firmly, yet can be removed with-
out damaging covering material.
PROCEED DIRECTLY TO STEP 9.
NOTE: Some people have tried to get a slightly better glide with the
Gentle Lady by flattening the polyhedral of the wing somewhat.
Unfortunately, this degrades the turning ability of the ship and it is
no longer able to respond quickly. We recommend keeping the polyhe-
dral measurements as indicated.
8.
Position rib #8 on inboard spars, and slide it over next to
rib #8.
Position outboard and inboard panels together at polyhedral
joint. Raise wing tip 4” off work surface. Join inboard to
outboard spars using 1/16” ply joiners. Clamp until dry.
Glue L.E. and T.E.’s together.
Glue rib #9 at polyhedral joint and add gussets.
Glue outboard spars to ribs.
9.
Repeat steps 2 through 8 for left inboard and outboard
panels
10.
Trim off excess spar material extending beyond ribs #18.
Glue balsa tri-strips in place on wing tips.
Carve and sand,
following top contour
of rib (see plan).
4”
