Top Flite J-3 Piper Cub - Manual (Page 3)

3. Using the 1/16" x 1/4" x 36" cap strip stock provided, glue a
19-5/16" length directly to the rear, bottom of the aileron
leading edge, flat against the plans.
4. Position and pin the bottom 1/16" x 1" x 36" trailing edge
(T.E.) stock to the plans. Note this material ends at the out-
board W-12 aileron riblet location — let the excess extend in-
board past the W-1. W-2. W-3 location as it will be trimmed
later.
5. Using the 1/16" x 1/4" x 36" cap strip material provided,
measure, cut and glue in place the bottom outboard and in-
board aileron cap strips, between the T.E. and the aileron
L.E. cap strip. Note: do not add the other bottom aileron
cap strips at this time.
6. With a razor blade, carefully cut away the T.E. sheeting and
aileron cap strip to accept the 1/16" ply aileron horn plate —
W-19 (PLY). Glue W-19 (PLY) in place.
7. Locate and remove all W-12 aileron riblets from their die cut
sheets. Glue all W-12 riblets in place directly to the aileron
L.E., the aileron L.E. cap strip and the bottom T.E. sheeting,
using the plan for location and spacing. Be sure these are
installed 90° upright and square with plan.
8. Develop Wing Construction Spacing:
a. Pin the bottom, forward 1/8" x 1/4" x 36" sheeting spar
directly to the plans — locate accurately.
b. Directly behind this spar, lay a piece of the 1/16" x 1/4"
x 36" cap strip stock to serve as the forward rib spacer —
it is not necessary to pin this in place.
c. Directly forward of the aileron spar, lay a piece of the
same cap strip material. This will serve as the rear rib
spacer.
9. Locate and carefully remove all remaining wing ribs from
their die-cut sheets. Carefully remove the die-cut spar cut-
outs (this is most easily done with the use of an X-acto knife
with a No. 11 blade). "Thread" each rib, in their appropriate
order, over forward 1/4" x 5/8" x 36" main spar and the 1/4"
x 3/8" x 36" rear spar, making sure that the trimmed wingtip
ends of each spar are at the wingtip and are turned up on the
correct side. Space the ribs approximately as shown on the
plans.
10. Once all the ribs are in place over the plans, the assembly
should be carefully inspected to make sure that each part that
is to contact another, does so. If any trimming is required to
ensure the wing lays flat to the work surface, this is the time
to do it.
2