Sequoia Aircraft Corporation F.8L Falco, Руководство по монтажу

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F.8L Falco Construction Manual 25–24 Revision 4, March 1, 2002
Figure 25
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Install the firewall on the front face of fuselage frame No. 1 by installing a number of
fittings. In particular, the engine mount lugs must be installed at this point. Figure 25
shows all of the equipment that is installed on the firewall. The electric fuel pump is
installed on the right side of the aircraft and the gascolator on the left.
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Clamp the top center cowling support, P/N 840-7, in place. The outside surface of the
cowling should match the outside surface of the fuselage skin. The fuselage skin is 2.5mm
plywood on the sides and 2mm plywood above and below the side longerons. The cowling
is about .100” or 2.5mm thick, thus the cowling supports should be installed even with the
outside of fuselage frame No. 1 at the forward face; that is, with the undersurface of the
fuselage skin. The fabric covering will add a little to the thickness of the fuselage skin, and
for final alignment you can build up the fuselage with microballoons or sand a little on the
inside of the cowling.
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The ends of P/N 840-7 are already marked at their approximate ends for trimming, as well
as with the fuselage centerline. The ends of P/N 840-7 should be at B.L. 340, or directly
between the two bolts for the fuel tank band mounts. Cut the ends of P/N 840-7 to the
correct length.
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When you are certain that you have P/N 840-7 in the correct position, install the No.
8x3/4” TRA screws, one at at time. First, drill with a 7/64”Ø drill to a depth of 5/8” from
the face of the support angle, then ream the support angle and firewall
only with a #19
(.166ӯ) drill. You will find this much easier if you have two drills. The screws should be
located at B.L. 36, 130, 204 and 273 and about 10mm from the outside of the cowling
support flange.