Rans S-7S COURIER, Text Manual

Page: 29 / 203

09/01/2014
01-01
S-7S FUSELAGE FORMER INSTALLATION
NOTE: All fuselage formers must be cut to exact length from raw stock provided.
Mark and check fit carefully before cutting. In addition, pay attention to the wall
thickness of the raw stock called out in the parts manual. Formers are fabricated
from 0.028” wall tubing.
The fuselage frame should be primed before formers or anything else is installed.
VERTICAL STABILIZER FORMER
(AFTER PRIMING OF FUSELAGE FRAME/ BEFORE COVERING)
1.
Install the vertical stabilizer former (top of fuselage) onto the fuselage by
slipping one end of the former over the stub extending from the vertical
stabilizer. Refer to
FIGURE 01-01 . With a friends help bow the former and
slip the other end on top of the tab located on the aft side of station 3. Bow
the former downward to touch the vertical attach tubes on stations 4, 5
and 6.
2. Mark the location of the tubes where they contact the former centerline.
Remove the former and drill 1/4” holes at these locations through the
bottom side of the former only.
3. Re-install the former, the support tubes will slide into the former and
bottom out against the top wall. It may be necessary to slightly bend the
support tubes into alignment. Trim the forward end of the former to allow
to rest on top of the fuselage tab.
4. Locate and drill #40 holes through each support tube just below the
former. Locate and drill #40 holes through the former just forward or aft of
each support tube.
5. Hold the former tight against the support tubes and safety wire through the
hole pairs to retain former position.
6. Drill a #30 hole through the forward end of former and fuselage tab and
the aft end of former and vertical stabilizer stub. Refer to
FIGURE 01-01 .
7. Rivet each former end using a stainless steel rivet as shown in FIGURE
01-01 .