REAR RIBS & REAR TIP RIB
V-8
Clamp a support angle along the front side of the Rib to help center the Ribs (up and down) on the
Spar; unsupported, the day-light corners on the Rear Ribs (the cutout to clear the top and bottom
Spar extrusion) make it difficult to judge when the rib is centered.
7.
Cleco the Rear Ribs to the Main Spar one at a time with none of the Nose Ribs in place.
REFERENCE
: 6SV2
NOTE
: The Bottom flange of the Ribs makes a straight line with the bottom of the Spar. If
necessary adjust the top flange of the Rib to make it fit the width of the Spar.
LAYOUT
: Separate the left and right ribs. Mark the Rib flange center line on all flanges.
POSITION
: Since the Rear Bibs have a “day-light” corners to clear the spar extrusions, a
support fixture (such as a 2 x 2 board or a length of extrusion) is clamped to the side of the rib
while it is drilled to the Spar.
a) With the Spar flat on the table hold a rib against the spar web to position the
support fixture across the Spar Extrusions (6SV2-2 and 6SV2-3). In this position
clamp the support to the Rib.
c) The support fixture is now clamp to the Spar. Carefully center the rib flange over
the pre-drilled pilot holes flush with the top and bottom extrusions.
CHECK
: That the “day-light corner” flange clears the Spar Extrusion at the top and
bottom. The bottom of the Rib is flush with the Spar, if the Rib is too wide adjust the top flange.
DRILL & CLECO
: With #20
8.
Rivet the skeleton together. Tighten the AN3-6A bolts through the Spar Cap at Rib #6, refer to
the toque table on page 7 of the Manual.
9.
Cleco the Rear Zee to the Ribs.
REFERENCE
: 6SV2
NOTE
: The Rear Zee (top flange) overlaps on top of the Rib (see right middle
diagram on 6V8).
CLAMP
: Clamp the top flanges together, and the Rib rear flange to the Zee web.
CHECK
: a) Use an adjustable square against the side of the rib and the bottom of the Rear Zee
to check the 90 degree angle.
b) The flange centerline is visible through the pre-drill holes.
c) The bottom of the rib is flush with the bottom flange of the Rear Zee.
d) The rear Rib flange makes full contact with the Rear Zee web. Hand band the
flange to match the correct angle to eliminate any separation or gap along the edge
of the flange and the spar web.
DRILL & CLECO
: #30
RIVET
: a) The Splice Plate 6SV4-2 to the Rear Zee
b) The Rear Ribs to the Rear Zee.
10.
Cleco the Rear Tip Rib 6SV3-2 at the end of the Spar.
CLAMP
: Clamp the Rear Tip Rib to the L Angle on the Main Spar and the rear flange of the
Rear Tip Rib to the Rear Zee.
DRILL & CLECO
: Reference drawing 6SV4; 7A4 in the L Angle and 3 A4 in the Rear Zee.
Wait to rivet, it may be necessary to remove the Rib to install the Fiberglass Tip 6SV4-3