SECTION 8
THE FUSELAGE
RV-8/8A
8-21
8s8PP-1 r1 06/23/11
Final-Drill #12, the four bolt holes common between the F-890-1 Fwd Floor Panel and the WD-803-L-1 & -R-1
Engine Mount Brackets and F-843-L-1 & -R-1 Lower Longerons. Install temporary bolts in the fwd and aft most
bolt holes (See “Aft Iso View”, DWG 67A).
Separate the F-802W-L-1 & -R-1 Longeron clips from each other (See “Separating F-802W-1 Longeron Clips”,
DWG 67A).
Cleco the F-802W-L-1 & -R-1 Longeron Clips in place at the bottom of the F-802-R-1 & -L-1 Fuselage Bulk-
heads (See “Aft Iso View”, DWG 67A). Final-Drill #30, the 1/8 holes common between the fuselage bulkheads
and the longeron clips.
Cleco the F-866A-1 Lower Forward Baggage Bulkhead to the F-802VPP Fuselage Bulkhead Brace (See “Fwd
Fuse Substructure”, DWG 63A).
Cleco the F-802R-L-1 & -R-1 Fuselage Bulkheads to the aft flange of the F-802VPP Fuselage Bulkhead Brace.
Cleco the F-802R-L-1 & -R-1 Fuselage Bulkheads in place on the F-890-1 Fwd Floor Panel, At the same time,
cleco the F-870 Fwd Baggage Floor Assembly between the F-801 Firewall Assembly and the F-866A-1 Lower
Fwd Baggage Bulkhead. This will help brace the F-802R / F-866 Assembly to stand on its own.
Radius the aft outboard edge of the F-895-L-1 & -R-1 Doubler Plates so they will nest in the flange bend radius
of the F-804C-FL and FR Center Section Bulkheads, on the Center Section Assembly (DWG 67A).
Deburr the edges of the F-895-L-1 & -R-1 Doubler Plates.
Cut apart the two F-895B Spacers from each other (See “Separating F-895B-1”, DWG 67A). Deburr the edges
of the two spacers. Cleco the F-895-L-1 & -R-1 Doubler Plates to the side flange of the Center Section Assem-
bly using a couple of clecos inserted from the inside to allow adding the skins later. Cleco the F-895B Spacers
to the fwd end of the F-895-L-1 & -R-1 Doubler Plates using clecos inserted from the inside.
Deburr the punched openings, and edges of the F-891-L-1 & -R-1 Fwd Side Skins.
Insert the F-898-L Auxiliary Longeron in place in the notch in the F-802R-L-1 Fuselage Bulkhead.
Cleco the F-891-L-1 Fwd Side Skin to the left side of the Fwd Fuselage Substructure (DWG 67A).
NOTE: The
fwd side skin lays on top (overlaps on the outside) of the F-823-1 Mid Fuselage Side Skin
. Be liberal with
the use of clecos, to hold the skin tight to the sub structure and assure correct alignment of the fwd portion of
the fuselage.
Insert the F-898-R Auxiliary Longeron in place and cleco the F-891-R-1 Fwd Side Skin to the right side of the
Fwd Fuselage Substructure.
Cleco the F-870E-1 Skin Stiffener, and the F-870B-1 Outboard Stiffener to the interior surface of the F-891-L-1
& -R-1 Fwd Side Skins (See DWG 63A & “Fwd Fuselage Side Skins And Structure”, DWG 67A).
Cleco the F-8100C-1 Angle in place on the interior surface of the F-891-L-1 Fwd Side Skin (See “Throttle Quad-
rant Assembly”, DWG 68A).
Cleco the F-8101B-1 Angle to the interior side of the F-891-R-1 Fwd Side Skin (See “Right Console Assembly”,
DWG 68A).
TAILCONE BULKHEADS
Separate the F-886-L-1 & -R-1 Rudder Stops, F-810C-1 & F-811C-1 Angles, and the F-812B-1 Angle / Control
Stop from the F-800 Angle Parts by cutting at the locations shown in F-800 Parts Separation diagram on DWG
70. Label each by part number before separating.
Radius the ends of the F-810C-1 & F-811C-1 Angles as shown in the F-810B-1 and F-811-1 Bulkhead Assem-
bly views on DWG 70, so that they nest tightly inside of the F-887-L-1 & -R-1 Upper Longerons. Deburr and
smooth all the edges of the rudder stops, angles, and control stop.
Cleco the F-812A-1, and F-812C-1 Bulkheads to each other as shown in F-812-1 Bulkhead Assembly view on
DWG 70. Final-Drill #30, all 1/8 holes common between the two parts.
Use a hand seamer to open the bend angle of the flanges on the F-812A-1 Bulkhead (fwd) so that its flanges
are parallel to the flanges on the F-812C-1 (aft) Bulkhead (DWG 70).
NOTE: Identify the F-812A-1 by the 1/8
holes in the side flanges.
RV-8 Only:
Mark the vertical position of the WD-409 Tail Spring Mounts top edge on the front side of the F-812
Bulkhead Assembly (See “Section View A-A”, DWG 73).
RV-8/8A
SECTION 8
THE FUSELAGE
8-22
8s8PP-1 r1 06/23/11
RV-8 Only:
Clamp the WD-409 Tail Spring Mount to the fwd surface of the F-812 Bulkhead Assembly. Make
sure it is centered on the bulkhead and that the top edge is aligned with the vertical positioning mark made in
the previous step.
RV-8 Only:
Match-Drill #30, the two keeper rivet Holes in the F-812 Bulkhead Assembly into the WD-409 Tail
Spring Mount. Cleco as you drill each hole.
RV-8 Only:
With the WD-409 Tail Spring Mount still clamped in place, machine countersink #30, the two keeper
rivet holes drilled in the previous step, for flush rivet heads on the aft side.
RV-8 Only:
Uncleco and unclamp then deburr the WD-409 Tail Spring Mount, F-812A-1 Bulkhead, and the F-
812C-1 Bulkhead.
RV-8 Only:
Dimple countersink the #30 rivet holes common between the F-812A-1 Bulkhead and the F-812C-1
Bulkhead, for flush rivet heads on the aft side (DWG 70).
RV-8 Only:
Prime the WD-409 Tail Spring Weldment. Prime the F-812A-1, and F-812C-1 Bulkheads if/as de-
sired.
RV-8 Only:
Rivet the F-812A-1 Bulkhead to the F-812C-1 Bulkhead at only the dimple countersunk hole loca-
tions (DWG 70).
RV-8A Only:
Make the F-712E Tie Down Bar as shown in F-712E Tie Down Bar view on DWG 70.
RV-8A Only:
Position the F-712E Tie Down Bar on the front side of the F-812-1 Bulkhead Assembly and clamp
in position (See “F-812-1 Bulkhead Assembly”, DWG 70). Match-Drill #30, the 1/8 tie down bar holes to the
bulkhead assembly.
RV-8A Only:
Disassemble the parts from the previous step. Deburr the holes and edges of all the parts.
RV-8A Only:
Dimple Countersink the holes in the F-812A-1 & F-812C-1 Bulkheads for flush rivet heads on the
aft side of the bulkhead assembly.
NOTE: Do not dimple countersink the four holes common with the F-
812E Tie Down Bar that will be later final-drilled to #12 for the installation of bolts when the vertical sta-
bilizer is attached (See “F-812-1 Bulkhead Assembly”, DWG 70).
RV-8A Only:
Machine countersink on the aft side of the F-712E Tie Down Bar, the four rivet holes that are com-
mon with dimpled holes in the F-812A-1 & F-812C-1 Bulkheads. Prime the tie down bar. Prime the F-812A-1 &
F-812C-1 Aft Bulkheads if/as desired.
RV-8A Only:
Cleco and rivet the F-812A-1 Bulkhead, F-812C-1 Bulkhead, and the F-712E Tie Down Bar to-
gether (See “F812-1 Bulkhead Assembly”, DWG 70).
Separate the two F-811B-1 Stab Attach Bars from each other as shown in F-811B-1 Stab Attach Bar Separa-
tion diagram on DWG 70.
Remove the portion of the F-811A-1 & F-811E-1 Bulkheads that is depicted in F-811A-1 & E-1 Bulkhead Trim
view on DWG 70.
Cleco together the F-811A-1 & E-1 Bulkheads, the two F-811B-1 Stab Attach Bars, and the F-811C-1 Angle to
make an F-811-1 Bulkhead Assembly as shown on DWG 70.
NOTE: The F-811A-1 Aft Bulkhead does not
have the small tabs at the top.
Use a hand seamer to open the bend angle of the flanges on the F-811A-1 Bulkhead so that they are parallel to
the flanges on the F-811E-1 Bulkhead.
Final-Drill #30, the 1/8 holes common between the F-811A-1 & E-1 Aft Bulkheads. Final–Drill #30, the four 1/8
holes common between the F-811B-1 Stab Attach Bars and the two bulkheads. Match-Drill #30, the remaining
holes common between the bulkheads and the stab attach bars.
Label the position of the two F-811B-1 Stab Attach Bars on the F-811-1 Bulkhead Assembly. Disassemble the
parts from the two previous steps.
RV-8A Only:
– As an option, the F-811B-1 Stab Attach Bars can be tapered for weight reduction. Refer to
“Optional F811B-1 Stab Attach Bar Taper”, DWG 70.
Deburr the holes and edges of all the F-811 Bulkhead Assembly parts.
Prime the two F-811B-1 Stab Attach Bars and the F-811C-1 Angle. Prime the F-811A-1 & E-1 Bulkheads if/as
desired.
