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Construction Manual
Step 4 - Wing Assembly (R5 ribs)
Locate three R5 ribs from BP9/
BP10 and three SB4 sheer webs
from BP12.
Using the same techniques as
you used to attach the R6 rib in
the last step, glue each of the
R5 ribs in place, one at a time as
shown here.
Step 5 - Wing Assembly (SB7)
Locate three SB7 rear webs from
BP12. These are installed into
each of the attached ribs, into
the pre-cut slots at the rear of
these three ribs.
Step 6 - Wing Assembly (R4 ribs)
Locate two R4 ribs from BP9/
BP10 and two SB4 sheer webs
from BP12.
Attach them in place as shown.
Step 7 - Wing Assembly (SB7)
Locate two SB7 rear webs from
BP12. These are installed into
each of the attached ribs, into
the pre-cut slots at the rear of
these two ribs.
Step 8 - Wing Assembly (R3, SB3)
Locate one R3 rib from BP11 and
two SB3 sheer webs from BP12.
Glue both SB3's to R3, making sure
you attach them to the left side of
the rib, as shown here. Also make
sure they are both 90° to the rib.
Now glue R3 in place as shown,
making sure it is completely
pushed onto the bottom spar.
Step 9 - Wing Assembly (R3, SB2)
Locate one R3 rib from BP11 and
two SB2 sheer webs from BP12.
Glue both SB2's to R3, making sure
you attach them to the left side of
the rib, as shown here. Also make
sure they are both 90° to the rib.
Now position R3 in place as shown,
making sure it is completely pushed
onto the bottom spar.
Step 10 - Wing Assembly (SB7)
Locate two SB7 rear webs from
BP12. These are installed into
each of the attached R3 ribs, into
the pre-cut slots at the rear of
these two ribs.
Step 11 - Wing Assembly (R2)
Locate one R2 rib from BP11 and
two SB1 sheer webs from BP12.
Note that both SB1's have a small
circle engraved in them. This
designates the top and the edge
that attaches to R1.
Glue both SB1's to R2, making sure
you attach them to the left side of
the rib, as shown here. Also make sure they are both 90° to the rib.
Now glue R2 in place as shown, making sure it is completely
pushed onto the bottom spar.
Step 12 - Wing Assembly (R1)
Locate one R1 rib and two WH4
wing-peg supports from LP1. You'll
also need one SB5 sheer web from
BP12.
Note that both WH4's and SB5
have a small circle engraved in
them. This designates the top and
the edge that attaches to R1.
We strongly suggest you dry fit
all these parts together first, as it's a bit
more involved than the previous steps.
Slide R1 in position, making sure the SB5
tabs are inserted into the pre-cut slots
in R1 & R2. You'll also need to insert the
WH4's and SB5 in place, making sure
they are all properly aligned and all tabs are fully seated.
When properly installed, the R1 rib will have a very slight angle
(1.5°) which is half of the total dihedral that's built into the wing.
Step 13 - Wing Assembly (WB1)
Locate one WB1 from LP1.
Note that WB1 has a small circle
engraved designating the side that
faces rib R1.
Glue this piece in place as shown, in
the pre-cut "step" on the back of the
R1 and R2 ribs.
Step 14 - Wing Assembly (leading edge)
Locate one of the 5/16" square
balsa strips. This is used as the
wing's leading edge. It will need
to be trimmed to length, but leave
it slightly oversized so it extends
roughly 1/8" past R1 and about
a 1/4" past the wing tip shown
on the plans. Glue this in place,
making sure it is securely glued to each rib.
