REAR TOP SKIN
V-10
The pre-drilled holes in the Skins will square the Ribs to the Main Spar. Adding tack rivets along
the front edge into the extrusion will assure the spar stays straight during construction.
11.
Crimp the un-drilled flange of the L angles to add curvature. For an effective crimping tool,
refer to page 4 of the Construction Manual
CHECK
: Compare the curvature of the L angles by holding it up against a Rear Ribs.
12.
Cleco the Rear Top Skin 6SV3-5 on the wing skeleton.
REFERENCE
: 6SV3-5
LAYOUT
: Mark the rib station on the front edge of the skin: use a straight edge to connect
the predrilled holes in the skin to extend the rib rivet line to the front edge of the sheet.
POSITION
: Line up the rib station marks on the spar extrusion, from step 6, with the rib
station lines marked on the edge of the sheet. Clamp the Skin to the Spar. Clamp the Rear Zee
to the Skin when the pre-drilled holes for the rive line are in line with the rivets in the rear
flange of the Rear Ribs and Rear Zee from Step 3
CHECK
: a) The Rib Stations in the Rear Zee line up with the pre-drilled holes in the Skin
b) The Rib Stations marked on the top of the Spar extrusion line up with the Pre-
drilled holes.
d)
The Rib flange center line is visible through the pre-drilled holes, the Rib can be
moved for better alignment.
e)
The aft edge of the skin is flush with the Rear Zee web.
PITCH
: a) 50 A4 (table on 6SV4).
b) The pitch at rib #6 is 25mm.
TIP
: Drill the rear rivet line later with the Aileron clamped in place.
DRILL & CLECO
: Before drilling, support the trailing edge by placing the following
spacers underneath the Rear Ribs (see page 5 of the Speed Wing Construction Manual):
R.R. # S6 use spacer 25mm
S7
24
S8
23
S9
22
Back drill with #30 when the rib flange center line is visible. Reach under to adjust the
position of the rib to align the center line!
13.
Cleco the 3 stiffener L Angles between the Rib stations.
REFERENCE
: 6SV4 top right diagram, 6V8. Page 17 of the Construction Manual.
CHECK
: the curvature of the Stiffeners with the wing profile. Reach in from below to make
necessary adjustments to the crimp (see page 17 of the Construction Manual).
14.
TACK RIVETS
(Flush tack) the skin to the spar. Position the track rivets 20mm to the left of
the rivet line through the ribs (with a rivet at the intersection of the rivet line through the rib and
spar the tack rivet is positioned in the middle of the 40mm pitch of the spar rivet line).
Reference page 11 of the Construction Manual.
NOTE
: The tack rivets will keep the spar straight with the edge of the skin. The tack rivets also
prevent the skeleton from shifting when the assembly is turned over to install the bottom skin.
RIVET
: A4 with a flat nose piece on the riveter head. Check the diameter of the inside hole in
the nose piece, use the appropriate nose piece for the 1/8” rivets!
15.
RIVET
: The Top Skin to the Skeleton, wait to rivet the rivet lines after rib #9
