Great Planes Fun One 40 - GPMA0490 - Manual (Page 18)

D D 9. (Glue the top spar in place with the spar doubler
facing down. Glue the LE in place making sure it is resting
properly in the jig labs and it is centered "UP and DOWN"
on the ribs. It may be necessary to remove a small amount
of material from the jig labs for the LE to f i t properly.
IMPORTANT: In the following steps you'll find it
necessary to remove some of the pins holding the wing
down to your building board. As you do, take other steps
as necessary to continue holding the wing down, such as
by applying weight lo the top of the wing, or by relocating
the pins.
NOTE: There will be a small gap between the ribs and the
webs but this is normal.
D D 12. With the wing accurately lined up over the
plan, cut the leading edge. trailing edge and t h e spars off
at the root end. Use a drafting triangle or square to accu-
rately transfer the cutoff lines from the plan to the struc-
ture.
D D 13. Cut the LE. TE and Spars off flush with rib
W10. If you built the wing on a wing jig, now is the time
to remove the panel from the jig.
D 14. Go back to step 6 and assemble the other wing
panel.
D D 10. Position the 3/32" x 3" x 14-7/8" balsa shear
web sheet (FUN1W14) over the shear web template on
the plan. Make sure the sheet is correctly aligned with the
template and transfer the marks from the plan to the sheet.
Move the sheet over to the side and write each web
designation onto the sheet so you will know where each
one goes. Use a straight edge and an Xacto knife to cut
between the lines making the shear webs.
JOIN THE WING PANELS
D 1. On a flat surface trial fit the two wing halves
together. The leading edges, trailing edges and the spars
should bull up nicely against each other. Sight down the
trailing edges to make sure they are straight with each
other (No sweep in the wing). Sand where needed to
achieve a good straight fit between the wings. NOTE: The
dihedral is automatically built into the wing by building it
flat upside down on the building board. This makes the lop
spars level with each other and the bottom spars will rise
slightly with the taper of the wing.
D D 11. Securely glue the webs to the back side of the
spars. Center the webs between the spars and the ribs.
D 2. Use med/thick CA to "tack glue the two panels
together and pin or hold everything in place while the glue
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