SECTION 8
THE FUSELAGE
RV-8/8A
8-5
8s8PP-1 r1 06/23/11
Repeat the previous step for the Left L.G. Box Assembly.
NOTE: Do not match-drill holes common between the WD-813-1 Bolt Weldment and the F-802G Fwd
Corner Angle or F-802H-1 Aft Corner Angle.
Final-Drill #30, all 1/8 holes common between the parts clecoed
together in the previous step. Final-Drill #12, all 3/16 holes common between the clecoed parts except as
mentioned at the beginning of this step.
Machine countersink the one #30 hole that is underneath the F-878-L-1 & -R-1 Mid Cabin Braces in the aft side
of the F-802B-L-1 & -R-1 Aft L.G. Bulkheads for attachment of the L.G. Box Weldments (See the blow up detail
in “L.G. Box Installation”, DWG 62).
Final-Drill #40, all nutplate attachment rivet holes in the Fwd and Aft L.G. Bulkheads of the right L.G. Box
Assembly.
Machine countersink all nutplate attachment rivet holes drilled in the previous step, for flush heads on the
exterior of the right L.G. Box Assembly.
Machine countersink all the #30, F-802E-R-1 Fwd Angle to F-802A-R-1 Fwd L.G. Bulkhead attach holes for
flush heads on the exterior (forward) side.
Disassemble both L.G. Box Assemblies and Deburr holes that have been final-drilled in all the parts. Also
Deburr the 3/16 holes at the top of the Fwd and Aft L.G. Bulkheads.
Prime all parts if/as desired.
Cleco the F-802E-R-1 Fwd Angle to the F-802A-R-1 Fwd L.G. Bulkhead. Cleco the F-802G-R-1 Fwd Corner
Angle to the fwd L.G. bulkhead. Cleco the F-802F-R-1 Aft Angle to the F-802B-R-1 Aft L.G. Bulkhead. Cleco
the F-802H-R-1 Aft Corner Angle to the aft L.G. bulkhead. Cleco in place any nutplates that install on the fwd.
and aft L.G. bulkheads for the Right L.G. Box Assembly.
Rivet the Angles, and the nutplates to each of the Right Landing Gear Bulkheads. Refer to DWG 62 for rivet
callouts.
Repeat the two previous steps for the Left L.G. Box Bulkheads.
Cleco then rivet the F-802C-R-1 L.G. Box Web to the right Fwd and Aft L.G. Bulkhead Assemblies.
Repeat the previous step for the Left L.G. Box Assembly.
Cleco the WD-822-R-1 L.G. Box Weldment to the Right L.G. Box Assembly. Cleco the WD-822-L-1 L.G. Box
Weldment to the Left L.G. Box Assembly.
Temporarily bolt the WD-813-1 Bolt Weldments to the L.G. Box Assemblies with a bolt in each of the four
corners. Temporarily install a bolt in the hole that joins the F-802H-L-1 & -R-1 Aft Angles to the F-802F-L-1 & -
R-1 Aft Corner angles, and the F-802G-L-1 & -R-1 Forward Corner Angles to the F-802E-L-1 & -R-1 Forward
Corner Angles.
Match-Drill #12, the bolt hole in the WD-813-1 Bolt Weldments using the common hole in the Fwd. and Rear
Corner Angles on each L.G. Box Assembly as a guide.
Remove the WD-813-1 Bolt Weldments from both of the L.G. Box Assemblies, and Deburr the holes drilled in
the previous step.
Reinstall the WD-813-1 Bolt Weldments with all the bolts as depicted on DWG 62.
NOTE: Two of the bolts in
each WD-813-1 Bolt Weldment are not installed at this time.
Install the five bolts that attach each Fwd and Aft Corner Angle to the L.G. Box Assemblies.
Deburr the F-878-L-1 & -R-1 Mid Cabin Braces (See “L.G. Box Installation”, DWG 62).
Cleco the left and right F-878-L-1 & -R-1 Mid Cabin Braces to the Left and Right L.G. Box Assemblies.
NOTE:
A F-802B-L-1 Aft L.G. Bulkhead to WD-822-1 L.G. Box Weldment rivet hole is also common to the mid cabin
brace. Remove the mid cabin brace and mark the hole to not be riveted until the mid cabin brace is installed.
Mark the same hole on the right side of the aircraft.
Cleco the L.G. Box Assemblies to the Fwd Floor Assembly (See “L.G. Box Installation”, DWG 62). Rivet all
holes that attach the WD-822-L-1 & -R-1 L.G. Box Weldments to the Fwd and Aft L.G. Bulkheads of each L.G.
Bulkhead Assembly,
except
for the two holes identified in the previous step.
Final-Drill #30, all the 1/8 holes common between the four F-802G-L-1 & -R-1 and F-802H-L-1 & -R-1 Corner
Angles and the Fwd Floor Assembly.
RV-8/8A
SECTION 8
THE FUSELAGE
8-6
8s8PP-1 r1 06/23/11
If there is any misalignment, Final-Drill the large bolt holes in the Fwd Floor Panel using the holes in the WD-
813-1 Bolt Weldments as a guide.
Uncleco the L.G. Box Assemblies from the Fwd. Floor Assembly, and Deburr all holes drilled in the two previous
steps.
NOTE: Do not rivet the Fwd Corner Angles at this time!
Cleco both L.G. Box Assemblies to the Fwd. Floor
Assembly. Rivet both the L.G. Box Assemblies to the Fwd Floor Assembly through the F-802H-L-1 & -R-1 Aft
Corner Angles only. See “Right L.G. Box Assembly”, DWG 62 for rivet callouts.
Cleco the F-802T-1 Aft Upper Brace, and the F-802N-1 Fwd Upper Brace onto the L.G. Box Assemblies (See
“L.G. Box Installation”, DWG 62). Final-Drill #30, all 1/8 holes common between the fwd upper brace, aft upper
brace and the L.G. Box Assemblies. Final-Drill #12, all the 3/16 holes common between the fwd upper brace,
aft upper brace and the L.G. Box Assemblies.
NOTE: F-802T is an important structural part, and should
NOT be omitted or modified.
Cleco the F-864D-1 Throttle Quadrant Bracket in place on the aft side of the Left L.G. Box Assembly (See “Left
L.G. Box Assembly”, DWG 62). Cleco the F-878-L-1 & -R-1 Mid Cabin Braces to the aft sides of the Left and
Right L.G. Box Assemblies (See “L.G. Box Installation”, DWG 62). Final-Drill #30, all 1/8 holes in these parts.
Uncleco all parts from the previous two steps.
Final-Drill #40, the 3/32 nutplate attachment rivet holes in the F-864D-1Throttle Quadrant Bracket, and the F-
878-L-1 & -R-1 Mid Cabin Braces.
Machine Countersink the nutplate attach holes for the six, forward most nutplates in the F-878-L-1 & -R-1Mid
Cabin Braces, for flush rivets. Do nothing to the aft most nutplate location at this time.
Deburr all the holes in the parts that were final-drilled in the four previous steps.
Dimple countersink the nutplate attach holes in the F-864D-1Throttle Quadrant Bracket for flush rivets.
Prime these parts if/as desired.
Radius the edge of eight washers to allow them to nest with the corner radius of the F-802E-L-1 & -R-1 Forward
Angles and F-802F-L-1 & -R-1 Aft Angles (DWG 62). Prime the washers after shaping.
Cleco and then rivet, the F-802N-1 Fwd Upper Brace and F-802T-1 Aft Upper Brace to the L.G. Box
Assemblies. Install the bolts attaching both the braces to the L.G. Box Assemblies.
NOTE: The two bolts on
each side attaching the braces through the Fwd and Aft Angles of the L.G. Box Assembly, require the
use of the washers just made in the previous step.
Dimple Countersink the nutplate attachment rivet holes on three nutplates and rivet them to the F-864D-
1Throttle Quadrant Bracket (See “Left L.G. Box Assembly”, DWG 62). Rivet the throttle quadrant bracket to the
Left L.G. Box Assembly.
Rivet the six nutplates to the F-878-R-1 & -L-1 Mid Cabin Braces. Rivet the left and right mid cabin braces to
the Left and Right L.G. Box Assemblies.
Install the two bolts that attach each Mid Cabin Brace to the L.G. Box Assemblies (See “L.G. Box Installation”,
DWG 62).
RV-8 FORWARD FUSELAGE SUB STRUCTURE
(This section RV-8 Only)
Flute the flanges of the F-866B-1 Upper Fwd Baggage Bulkhead and the F-866A-1 Lower Fwd Baggage
Bulkhead, between the holes, to make them straight and flat. Deburr the edges of both bulkhead parts (DWG
63).
Separate the F-870B-1 Outboard Stiffener from the F-870E-1 Skin Stiffener (See ”Separating F-870BE”, DWG
63). Mark the F-870B-1, and F-870E-1 stiffeners with their name and part.
Separate the two F-870D-1 Stiffeners from each other and from the F-870C-1 Inboard Stiffener (See
“Separating F-870CD”, DWG 63). Cut the taper on the two stiffeners by trimming as shown in Detail A.
Deburr the edges of the stiffeners from the two previous steps.
Cleco the two F-870D-1 Stiffeners, and the F-870C-1 Inboard Stiffener to the F-870-1 Fwd Baggage Floor (See
“Fwd Baggage Floor Assembly view”, DWG 63). Final-Drill #40, all the 3/32 holes common between the
stiffeners and the fwd baggage floor. Uncleco the stiffeners.
Final-Drill the 3/32 nutplate attachment holes in the F-870C-1 Inboard Stiffener, the F-870B-1 Outboard
