RANS S-20 RAVEN
TEXT MANUAL
9/01/2013
01-02
FUSELAGE SIDE FORMERS
8.
Each fuselage side uses 2 formers to support the fabric. Refer to
FIGURE
01-08
for the proper location of each side former. Determine the length of
each former, mark and check fit before cutting from provided raw stock.
Also, note there are two different diameters of formers (1/4” and 1/2”).
9.
The Lower Side Former is made from 1/4” tubing. Each end is retained by
a set of welded stubs that the former slips over. Cut the former to length,
drill each end to #11 to allow the former to slip over the stubs. Slightly
bow the former to allow it to slide over the stubs.
10.
Drill a # 40 hole through the former outboard of the fuselage tube at
station 3 as shown in
FIGURE 01-08
.
11.
Add anti-chafe tape around the fuselage frame and safety wire former in
place.
12.
The Center Side Former is fabricated from 1/2" tubing. Each end of the
former is attached with rivets from the inside of the fuselage through
welded tab. Refer to
FIGURE 01-08
.
NOTE: The former is spaced away
from the fuselage with plastic washers.
Use the washers to achieve a
smooth flow of the former. Refer to
FIGURE 01-08
for washers required
at each securing location.
13.
Drill a # 40 hole through the former outboard of each fuselage tube as
shown in
FIGURE 01-08
.
14.
Add anti-chafe tape around the fuselage frame and safety wire former in
place.
NOTE: If fuselage is Powder-Coated anti-chafe tape is not
required.
Transfer drill #30 through tabs, cleco, deburr, and rivet.
FUSELAGE BELLY FORMERS
15.
Belly formers are made from 1/4" raw stock tubing. Each end is retained
by a set of welded stubs that the former slips over. Cut each former to
length, drill each end to #11 to allow the former to slip over the stubs.
Refer to
FIGURE 01-15
. Slightly bow the former to allow it to slide over
the stubs.
16.
Drill a # 40 hole through the former at each securing location of the
fuselage. See
FIGURE 01-15
.
NOTE: The former is spaced away from
the fuselage with plastic washers.
Use the washers to achieve a smooth
flow of the former. Refer to
FIGURE 01-15
for washers required at each
securing location.
17.
Add anti-chafe tape around the fuselage frame and safety wire former in
place.
NOTE: If fuselage is Powder-Coated anti-chafe tape is not
required.