SECTION 8
THE FUSELAGE
RV-8/8A
8-29
8s8PP-1 r1 06/23/11
make the aft bottom skin pull out more easily.
RV-8 Only:
Cleco every other rivet hole in the F-819-1 Aft Deck, and the portion of the F-824-L-1 & -R-1 Aft
Side Skins, that are aft of the F-810 Bulkhead Assembly, to help stiffen this area while the WD-409 Tail Spring
Mount is being fitted.
RV-8 Only:
Cleco the WD-409 Tail Spring Mount to the F-812 Bulkhead Assembly at the two previously ma-
chine countersunk hole locations (DWG 73).
RV-8 Only:
Make a mark above each WD-409 Tail Spring Mount attachment bolt hole, on the aft side of the F-
811 Bulkhead assembly, to use for locating the tail spring mount at the proper elevation (See “View B-B”, DWG
73).
RV-8 Only:
Cleco the F-812 Bulkhead and WD-409 Tail Spring Mount in place on the fuselage.
RV-8 Only:
Make shims 3/4 square from scrap aluminum to shim any gap between the WD-409 Tail Spring
Mount and the F-811 Bulkhead Assembly.
RV-8 Only:
Clamp the fwd end of the WD-409 Tail Spring Mount to the F-811 Bulkhead Assembly. Use the
previously made marks to set the vertical position.
NOTE: Sight through the tube on the tail spring mount,
and center the bottom F-810 Bulkhead Assembly tooling hole to locate the tail spring mounts correct
lateral position.
RV-8 Only:
Match-Drill #30, the two bolt hole locations common between the F-811 Bulkhead Assembly, the
WD-409 Tail Spring Mount, and any shims that are in place.
RV-8 Only:
Use Detail C on DWG 73 as a full size template to mark the F-828-1 Aft Bottom Skin for the trim-
ming required to clear the WD-409 Tail Spring Mount. Remove the marked portion of the aft bottom skin, then
smooth and deburr.
RV-8 Only:
Final-Drill 3/4, the 3/32 hole in the F-828-1 Aft Bottom Skin shown in the “F-828-1 Tail Wheel Spring
Trim”, DWG 73.
RV-8 Only:
Re-cleco the F-828-1 Aft Bottom Skin on the fuselage to verify their is no interference with the WD-
409 Tail Spring Mount. Enlarge the opening in the aft bottom skin if / as required.
Uncleco and remove the F-825-1 Aft Top Skin, and the F-807B-1, F-808B-1, F-809B-1 and F-8010A-1 Bulk-
head Tops.
Uncleco and remove the F-812B-1 Angle / Control Stop, F-886-L-1 & -R-1 Rudder Stops, and F-819-1 Aft Deck
(DWG 71).
Uncleco and remove the WD-808 Front Seatback Support and F-856-1 Spacers. Mark the top side of each
spacer (DWG 72).
Uncleco and remove the F-816A-L-1 & -R-1 Cockpit Rails and F-817-L-1 & -R-1 Seat Back Support Plates.
Reposition the fuselage back to sitting upright on the worktable.
Remove both of the F-887-L-1 & -R-1 Upper Longerons.
Uncleco and remove all of the parts for the tail cone in the reverse order of what they were installed.
Uncleco and remove the F-823-L-1 & -R-1 Mid Side Skins, and all other related parts that are attached to the
Seat Rib Assembly with clecos.
Uncleco and remove the Seat Rib Assembly from the Center Section Assembly.
Re-cleco the F-822-1 (RV-8) or F-890-1 (RV-8A) Fwd Floor Panel to the fwd and aft bottom flanges of the Cen-
ter Section Assembly. Cleco from the inside of the fuselage.
Reposition the Fwd Fuselage Sub Structure and Center Section Assembly so that the two rows of rivet holes
that are common with the fwd and aft bottom flanges of the F-804 Center Section Bulkhead Assembly, over-
hang the edge of the table and are accessible from the bottom. Put some ballast weight inside to prevent it
from tipping off the edge of the table.
Machine countersink for dimples, the #30 holes in the F-822-1 (RV-8) or F-890-1 (RV-8A) Fwd Floor Panel that
are common with holes in the fwd and aft bottom flanges of the Center Section Assembly. These holes will ac-
cept dimples in the common holes in the F-826-1 Left Center Bottom Skin and F-827-1 Right Center Bottom
Skin.
Uncleco and remove the F-820-L-1 (RV-8) or F-891-L-1 (RV-8A) Fwd Side Skins, from the Center Section As-
RV-8/8A
SECTION 8
THE FUSELAGE
8-30
8s8PP-1 r1 06/23/11
sembly, and the Fwd Fuselage Sub Structure
. NOTE: Remove only the skin, re-cleco all sub-structure
parts back to their respective locations.
RV-8A Only:
Cleco the F-880C-L-1 Fwd Seat Ramp Rib to the F-8112-L-1 Mid Cabin Cover Support (Aft Iso
View, DWG 67A). Temporarily mount the fwd seat ramp rib / mid cabin cover support assembly to the F-802R-
L-1 Fuselage Bulkhead and the top of the WD-821-L Landing Gear Weldment using screws (See “Fwd Fuse
Side Skins and Structure”, DWG 67A & 68A)
Clamp the F-883-1 (RV-8) or F-883A-1 (RV-8A) Fuel Valve Bracket in position as shown in Fuel Valve Bracket
Installation view on DWG 68 or 68A.
NOTE: Shorten the fuel valve bracket at the
outboard end
slightly if it
is too long.
Mark the F-844-L (RV-8) or F-898-L (RV-8A) Auxiliary Longeron for the screw locations common between it and
the F-883-1 (RV-8) or F-883A-1 (RV-8A) Fuel Valve Bracket.
Drill #19, the holes marked in the previous step.
NOTE: Do not match-drill the holes in the F-883-1 or F-
883A-1 Fuel Valve Bracket that are common with the F-878-L-1 (RV-8) or F-8112-L-1 (RV-8A) Mid Cabin
Brace. They will be done after the fuselage side skin has been riveted to allow for any lateral movement
that takes place.
RV-8 Only:
Unbolt and/or uncleco and remove all unriveted parts that are in place on the Fwd Fuselage Sub
Structure.
RV-8A Only:
Unbolt and/or uncleco and remove all unriveted parts that are in place on the Fwd Fuselage Sub
Structure except for the F-843-L-1 & -R-1 Lower Longerons.
RV-8A Only:
Match-Drill #30, the three 1/8 holes in the F-890-1 Fwd Floor Panel not drilled previously that are
common with the F-843-L-1 & -R-1 Lower Longerons.
PREPARING FUSELAGE PARTS FOR FINAL ASSEMBLY
In the following steps, portions of the substructure will be machine countersunk to accept dimple countersunk rivet
holes or screw holes in the skins, and other portions will be dimple countersunk. Refer to DWG 74 or DWG 74A for
the skin rivet callout diagrams to determine which rivet hole locations use round head rivets, and which locations
use flush rivets or flush screws. All of the holes in skins will be dimple countersunk, except where specifically told to
machine countersink.
RV-8 Only:
Machine countersink for dimples, the #30 holes in the F-843-L-1 & -R-1 Lower Longeron side webs,
that are common with #30 dimple countersunk holes in the bottom edge of the F-820-L-1 & -R-1 Fwd Side Skins
(Refer to DWG 67 & 74).
RV-8 Only:
Machine countersink for a dimple, the five #30 holes in the bottom web of the F-843-L-1 & -R-1
Lower Longerons that are common with dimple countersunk holes in the F-822-1 Fwd Floor Panel that will
receive AN426 rivets (F-843-1 Details, DWG 67).
RV-8 Only:
Machine countersink for dimples, the #30 holes in the F-844-L & -R Auxiliary Longeron side webs,
that are common with #30 dimple countersunk holes in the F-820-L-1 & -R-1 Fwd Side Skins.
RV-8 Only:
Machine countersink for dimples, the #30 holes in the F-802D-L-1 &-R-1 L. G. Box Plates, that are
common with dimple countersunk #30 rivet holes in the F-820-L-1 & -R-1 Fwd Side Skins.
RV-8 Only:
Machine countersink for dimples, the #40 holes in the F-844-L & -R Auxiliary Longeron side webs,
that are common with #40 dimple countersunk holes in the F-820-L-1 & -R-1 Fwd Side Skins.
Machine countersink for flush rivets, the inboard side of the #30 holes in the F-817-L-1 & -R-1 Seat Back Sup-
port Plates (DWG 72).
RV-8A Only:
Machine countersink for dimples, the #30 holes in the F-843-L-1 & -R-1 Lower Longeron side
webs, that are common with #30 dimple countersunk holes in the bottom edge of the F-891-L-1 & -R-1 Fwd
Side Skins (See DWG 67A & 74A).
RV-8A Only:
Machine countersink for dimples, the #30 holes in the F-898-L & -R Auxiliary Longeron side webs,
that are common with #30 dimple countersunk holes in the F-891-L-1 & -R-1 Fwd Side Skins.
RV-8A Only:
Machine-Countersink the three aft most #30 holes in the F-843-L-1 & -R-1 that are common with
the F-890-1 Fwd Floor Panel, for flush rivet heads on the top surface. This is to provide a flat surface for the
contact area of the WD-821-L-1 & -R-1 Landing Gear Weldments (See Aft Iso View, DWG 67A).