© 2008 Stevens AeroModel.
Page 33 of 52
28. Install W6 center section sheeting (assembled from W6a and W6b in step 1) as illustrated below. Bond with
medium CA glue.
Sand the center section sheeting to match contour of rib and taper into trailing edge as illustrated below.
29.
FINAL GLUE THE WING.
In many of these steps we’ve simply tack glued parts using only a small drop to hold
the assembly together while additional parts are installed. Now is the time to revisit all of these joints and
thoroughly bond the wing. Lay the wing flat on top of your building board and revisit all joints previously tack
glued with thin CA glue. Apply a gap filling medium CA glue to all off-angle joints such as those found where
W2 and W3 meet ribs and spar webs and where R5 meets the trailing edge of the wing.
30.
FINAL SAND THE WING.
In preparation for covering lightly sand the wing with 400 to 600 grit paper. Use a
razor plane, sanding bar, sanding block, or some combination thereof to round the leading edge to match that of
the airfoil profile. You may use the wing saddle of the fuselage to verify the fit. Just as the turbulators sit proud
above the inner wing ribs and flush with the outer wing ribs so does the leading edge. Use your 1/16 in. balsa
scrap to verify that you’ve set the proper height of the leading edge relative to the top surface of the interior
wing ribs R1a through R4b.
Proceed to cover the wing only after completing the wing tip assembly and the joining of the wing tip
procedures outlined next in this manual.
