© 2008 Stevens AeroModel.
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25. Install 11 in. length of carbon flat stock to recess in wing trailing edge centered between right and left ribs R2 as
illustrated below. Bond carbon flat stock using medium CA glue.
26. Install the sub spar W4 (assembled in step 1) reference photos and plan set for proper positioning.
Tip: It is
suggested that you reduce the size of this part by sanding prior to installation. Due to variance in wood
thickness from the mill and the precision of the laser you may find the fit of this part to be quite snug. We
suggest reducing the thickness and height of part by sanding. First sand the top and bottom of sub spar (just
enough to remove the laser burn) then rotate and sand either side. A good indication of when to stop sanding is
to attempt sliding the sub spar in through provided hole in the plywood faced outside rib R5. If it’s snug here
you’ll risk breaking ribs as you snake the part through the assembly. Reduce the size of the part to ease install
and use a gap filling medium CA to bond.
27. Locate spoiler frame 1/8 in. balsa part SP1 (sheet 10/21) Remove, and set aside for later, the spoilerSP2 from
the center of part SP1. The spoiler frame features a series of tabs that will key into the spar cap strip and a
series of notches that capture key ribs along the wing assembly. Fit SP1 to wing assembly at back-side of top
spar cap strip spanning left and right ribs R3. Bond spoiler frame along length of spar cap strip. Wrap spoiler
frame down across wing and key to ribs R2 and R3 bond with thin CA glue where spoiler frame meets ribs R1,
R2, and R3 and trussed sub ribs W2. See illustration below and plan set for positioning.
