Sequoia Aircraft Corporation F.8L Falco, Construction Manual

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F.8L Falco Construction Manual 22–6 Revision 4, March 1, 2002
Figure 5
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Make the notched wooden strip for the 95% chord station. Use a piece of 15x15 pine
about 3400mm or 11-1/2’ long—it isn’t structural so you
can piece it together from shorter
scrap pieces. It is important that the strip of wood be no higher than 15mm so that it will
not interfere with float sanding for the upper skin. At the 95% chord station, the wing
stations are 253.5mm apart. Cut a notch into the strip at each station to the dimension
shown as “A” in Figure 5.
Figure 6
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Make a number of angle guides for the ribs by cutting some scrap pieces of wood to
81.1°—use the method shown in Figure 6 if you do not have a protractor. These will be
used to align the ribs with the spar as shown in Figure 7. Glue some scrap pieces of
plywood to each face as shown on the right side of Figure 6. The short face will be
clamped to the forward or aft face of the spar. The ribs will be clamped to the long face of
the angle guide. The length of the long face not terribly important—150mm will be fine.
Cut the corner away so that glue squeeze-out will not glue the angle guide to the ribs and