Sequoia Aircraft Corporation F.8L Falco, Construction Manual

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F.8L Falco Construction Manual 20–8 Revision 4, March 1, 2002
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Cut out the two hinge openings in the leading edge skin. See Figure 14.
Figure 14
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Install all of the channel-nuts. Since wood rot most often occurs under metal fittings, you
should bed the channel-nuts in epoxy or wet zinc chromate primer.
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Fit the trailing edge skins for the right and left side. See Figure 15. Leave extra material at
the upper end for bending.
Figure 15
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Scarf the trailing edge skins along the forward edge to match the scarf of the leading edge
skin on the spar. Scarf the outside of the skin along the rib at Sta. 0.
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Soak the upper end of the skins in water, then clamp a skin in position and bend the tip
down over the tip bow. Use a steam iron and the same method used on the leading edge
tip skins.
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Use alignment pins for the left trailing edge skin, and mask the inside for varnishing.
Draw the internal structure on the skin for stapling or nailing during the skinning process.
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Fit the right trailing edge skin and draw the outline of the ribs and spars for gluing. It will
not be necessary to varnish the inside of these skins before gluing. Draw the internal
structure on the outside of the skin for stapling or nailing during the skinning process.
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Glue the right trailing edge skin on the rudder. Use long straight boards and clamp them
on either side of the rudder to support the thin trailing edge strip, or staple through the
trailing edge into a long straight board. Scuff-sand the plywood before gluing.
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Varnish the inside of the right trailing edge skin, and all other internal surfaces that will
not be glued.