Mount The Wing To The Fuse - GREAT PLANES Piper j-3 cub Instruction Manual

shown in the photo. Cut the protruding part of each #2 x 3/8"
screw off on the outside of the fairings and sand (or file) the
screws flush with the fairing. Use a small rubber band near
the wheel end of the fairing to allow the strut to move
against the fairing. Remove all the screws and apply thin CA
to each of the holes to harden the wood. You can leave the
fairings off until after the plane is covered.

Mount the Wing to the Fuse

1. Lightly sand the entire wing saddle area to remove any
glue bumps. Place the wing in the saddle and carefully align it
by measuring from the end of rib #7 to the TE of the rudder on
both sides of the plane. Adjust the placement of the wing until
both measurements are equal. Make a mark on the wing TE
and the center dowel to help keep things aligned. While holding
the wing in its proper position (a couple pieces of strapping
tape will help), drill 1/4" holes at each of the punch marks in the
1/16" ply wing bolt plate. Keeping the drill perpendicular to the
ply wing bolt plate, drill through the wing TE and the two 1/8"
ply wing mounting plates in the fuselage. IMPORTANT!: Do
not allow the wing to move while drilling.
2. Remove the wing and enlarge the holes in the
fuselage wing mounting plate only to 5/16".
3. Insert the two 1/4"-20 Blind Nuts (NUTS020) into the
5/16" holes in the wing mount plate from the bottom side.
Press the blind nuts into place with a pliers. Trial fit the wing
to the fuse using the two 1/4-20 Nylon Bolts (NYLON13)
provided. Do not over-tighten the bolts. If everything fits
nicely, remove the wing and apply epoxy around the blind
nuts to hold them in place. Use care to avoid getting glue on
the blind nut threads. You may also cut the nylon bolts off so
they protrude about 1/4" below the blind nuts.
4. Using a scissors, carefully cut the windshield along the
trim line. Trial fit the windshield onto the fuse, and trim it as
necessary for a good fit. NOTE: Do not glue the windshield
in place until after you have covered your model.
5. Replace the wing on the fuselage and measure the gap
between the wing and the windshield. Glue scrap pieces of
balsa sheeting to the wing to reduce this gap to 1/32". Sand
the scrap balsa to the contour of the wing.
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