SECTION 8
THE FUSELAGE
RV-8/8A
8-3
8s8PP-1 r1 06/23/11
Final Drill #40, the eight 3/32 holes in the F-836-L-1 & -R-1 Floor Ribs.
Uncleco all parts and deburr all the holes drilled in the previous three steps.
Dimple countersink the F-822-1 Fwd Floor Panel at the hole locations shown in the Dimple Diagram ONLY!
Dimple countersunk the holes for flush rivet heads on the top (interior) side of the skin.
Dimple countersink the #30 holes in the F-802M-L-1 & -R-1 Intercostal Ribs, and the F-836-L-1 & -R-1 Floor
Ribs that are common with holes dimpled in the previous step.
Machine countersink for dimples the #30 holes in the F-802K-1 L. G. Fwd Crossmember, and the F-802L-1 L.
G. Aft Crossmember that match up with holes that were previously dimple countersunk on the forward floor
panel.
Dimple countersink the #40 holes in the F-836-L-1 & -R-1 Floor Ribs that are common with the F-850-1 Bottom
Skin (DWG 75).
On the top side of the F-822-1 Forward Floor Panel, Machine Countersink #40, the nutplate attachment rivet
holes for flush rivets.
Prime all parts if/as desired.
Rivet the K1000-06 nutplates to the F-802K-1 L. G. Fwd Crossmember and F-802L-1 L. G. Aft Crossmember.
Use a #40 piloted countersink cutter to Machine Countersink the screw holes at each nutplate just riveted on to
accept #6 screw dimples.
Rivet the five K1000-08 nutplates to the bottom surface of the F-822-1 Fwd Floor Panel.
NOTE: The F-802K-1 L.G Fwd Crossmember is designated “Do Not Rivet” at this time.
Cleco the F-802K-
1 L. G. Fwd Crossmember, the F-802L-1 L.G. Aft Crossmember, F-802M-L-1 & -R-1 Intercostal Ribs and F-836-
L-1 & -R-1 Floor Ribs to the Fwd Floor Panel. Rivet the parts to the Fwd. Floor Panel using rivet callouts on
DWG 61.
RV-8 COOLING AIR RAMP ASSEMBLY
(This section RV-8 Only)
Trim the flange on each side of the F-867A-1 Cooling Air Ramp. Refer to “F-867A-1 Trim Detail” on DWG 61.
Cleco the F-867C-1 Attach Angle, and the F-867D-1 Stiffener to the F-867A-1 Cooling Air Ramp (See “Cooling
Air Ramp Assembly Exploded Iso View”, DWG 61). Final-Drill all 3/32 holes in the cooling air ramp, to #40.
Final-Drill the 1/8 holes in the cooling air ramp adjacent to the rolled portion at the fwd end, to #30.
Uncleco all parts and deburr all holes drilled in the previous step. Dimple countersink the #40 and #30 holes for
flush rivets on the exterior side (side opposite the bent flanges) of the F-867A-1 Cooling Air Ramp. Dimple
countersink the
#40
holes in the F-867D-1 Stiffener and the F-867C-1 Attach Angle.
Cleco the F-867C-1 Attach Angle to the F-802K-1 L.G. Fwd Crossmember. Final-Drill #30, all attach angle to
L.G. fwd crossmember rivet holes. Uncleco and deburr the holes drilled in this step.
Prime the Cooling Air Ramp Assembly parts if/as desired.
Rivet the F-867C-1 Attach Angle to the F-802K-1 L.G. Fwd Crossmember (See “Fwd Floor Assembly Exploded
Iso View”, DWG 61).
Back-Rivet the F-867D-1 Stiffener to the F-867A-1 Cooling Air Ramp (See “Cooling Air Ramp Assembly
Exploded Iso View”, DWG 61).
NOTE: The cooling air ramp will be riveted to the attach angle in a later
step
.
RV-8A FORWARD FUSELAGE SUBFLOOR ASSEMBLY
(This section RV-8A Only)
Cleco the F-802U-1 Crossmember, F-893-L-1 & -R-1 Fwd Floor Ribs, and F-892-L-1 & -R-1 Aft Floor Ribs to
the F-890-1 Fwd Floor Panel (DWG 61A). Temporarily label the skin “Bottom Side”, on the side the ribs and
crossmembers are clecoed. Label the other side, “Top Side”.
Final-Drill #30, all 1/8 holes common between the F-890-1 Fwd Floor Panel and all clecoed parts. Final-Drill
#30, all 1/8 holes common between the F-802U-1 Crossmember and the five ribs.
Final-Drill #40, the holes for attaching all the nutplates to the F-890-1 Fwd Floor Panel.
Uncleco all parts and deburr all holes drilled in the two previous steps.
RV-8/8A
SECTION 8
THE FUSELAGE
8-4
8s8PP-1 r1 06/23/11
NOTE: Do not dimple countersink the four outboard #30 holes on each end of the crossmember that are
also common with the F-802R-L-1 & -R-1 Fuselage Bulkheads (DWG 61A & 63A).
Dimple-countersink the F-890-1 Fwd Floor Panel at the hole locations common with the five floor ribs and the F-
802U-1 Crossmember. Dimple countersunk the holes for flush rivet heads on the top (interior) side of the skin.
Machine countersink the #40 nutplate attachment rivet holes for flush heads on the top side of the F-890-1
Forward Floor Panel.
Machine-countersink the #30 holes in the top flange of the F-893-L-1 & -R-1 Fwd Floor Ribs that are common
with dimpled holes in the F-890-1 Fwd Floor Panel.
Dimple-countersink the #30 holes in the top flange of the F-892-L-1 &-R-1 Aft Floor Ribs and F-802U-1
Crossmember that are common with dimpled holes on the F-890-1 Fwd Floor Panel.
Prime all of the parts from the section if/as desired.
Rivet the five nutplates in place on the right hand, fwd corner of the F-890-1 Fwd Floor Panel.
Cleco the F-802U-1 Crossmember, F-892-L-1 &-R-1 Aft Floor Ribs and the F-893-L-1 & -R-1 Fwd Floor Ribs to
the bottom of the F-890- Fwd Floor Panel.
CAUTION: Do not rivet at this time. They will be riveted much
later in the fuselage assembly.
RV-8A COOLING AIR RAMP ASSEMBLY
(This section RV-8A Only)
Use the F-867A-1 Trim Template to mark and trim the F-867A-1 Cooling Air Ramp as shown in the Cooling Air
Ramp Assembly Exploded Iso View on (DWG 61A.)
Trim the flange on each side of the F-867A-1 Cooling Air Ramp as shown in the “Cooling Air Ramp Assembly
Exploded Iso View”, DWG 61A.
Cleco the F-867C-1 Attach Angle, and the F-867D-1 Stiffener to the F-867A-1 Cooling Air Ramp (See “Cooling
Air Ramp Assembly Exploded Iso View”, DWG 61A). Final-Drill all 3/32 holes in the cooling air ramp to #40.
Final-Drill the 1/8 holes in the cooling air ramp, adjacent to the rolled portion at the fwd end to #30.
Uncleco all parts and deburr all holes drilled in the previous step. Dimple countersink the #40, and the #30
holes for flush rivets on the exterior side (side opposite the bent flanges) of the F-867A-1 Cooling Air Ramp.
Dimple countersink the #40 holes in the F-867D-1 Stiffener, and F-867C-1 Attach Angle.
Cleco the F-867C-1 Attach Angle to the F-802U-1 Crossmember (See “Exploded Iso View”, DWG 61A). Final-
Drill #30, all 1/8 Attach Angle to crossmember rivet holes. Uncleco and deburr the holes drilled in this step.
Prime the Cooling Air Ramp Assembly parts if/as desired.
Back-Rivet the only the F-867D-1 Stiffener to the Cooling Air Ramp (See “Cooling Air Ramp Assembly
Exploded Iso View”, DWG 61A).
NOTE: The cooling air ramp will be riveted to the attach angle in a later
step
.
RV-8 LANDING GEAR BOX ASSEMBLY
(This section RV-8 Only)
Flute between each of the holes in the F-802A-R-1, and -L-1 Fwd L.G. Bulkhead flanges , so that they are
straight and lay flat on a flat surface. Do the same to the F-802B-R-1 & -L-1 Aft L.G. Bulkheads.
Separate the left and right F-802H-1 Aft Corner Angles from each other (See “Separating F-802H-1”, DWG 62).
Separate the Left and Right F-802G-1 Fwd Corner Angles from each other (See “Separating F-802G-1”, DWG
62).
Remove the tab from the F-802-C-1 Left and Right L.G. Box Webs as shown in Trimming F-802C-1, DWG 62.
Final-Drill the 1/8 Fuel Tank Vent Line anchor clamp hole to #19 (See “Left L.G. Box Assembly”, DWG 62)
Smooth and deburr the edges of the F-802E-L-1 & -R-1 Forward Angles, the F-802F-L-1 & -R-1 Aft Angles, and
all parts from the previous three steps.
NOTE: The angles are punched from fairly heavy material, which
will require more finish work than most parts. A small bench top belt sander works well for smoothing
the edges on these parts.
Cleco together all the parts shown in the Right L.G. Box Assembly exploded view on DWG 62. Cleco the WD-
822-R-1 L.G. Box Weldment and WD-813-1 Bolt Weldment to the Right L.G. Box Assembly (See “L.G. Box
Installation”, DWG 62).
