SECTION 8
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When in use, lubricate the WD-817 Rudder Slide Bar occasionally. Use only silicone spray lube as it leaves no resi-
due that will attract dust and dirt which will cause sticking and binding of the assembly.
CAUTION: Do not spray
any silicone spray lube on the rudder slide bar, while it is installed in the cockpit, until after the cockpit area
has been painted. Any silicone over-spray will be impossible to remove and it will ruin the paint job.
Bolt the Rudder Pedal Assembly to the forward cockpit floor and Firewall Assembly (See “Isometric View”,
DWG 81).
Match-Drill 1/4 the 1/4 hole in both F-801L Backing Plates into the Firewall Assembly (See “Plan View” and
“Exploded Iso View”, DWG 60).
Connect both F-852B Forward Rudder Cable Assemblies to their associated F-852A Aft Rudder Cable Assem-
bly (See “Isometric View”, DWG 81).
Attach an AN43B eyebolt to the fwd end of both F-852B Fwd Rudder Cable Assemblies (See “Isometric View”,
DWG 81).
Attach the eyebolts on the F-852B Forward Rudder Cables to the Firewall Assembly using the 1/4 holes previ-
ously match-drilled from the F-801L Backing Plates (See DWG 60 & 81). While the rudder is held in its neutral
position, very the combination of washers between the fwd and aft side of the Firewall Assembly to adjust the
rudder pedal position to vertical (See “Side View”, DWG 81). If the rudder pedals need to tilt aft more, position
more washers on the fwd side of the firewall. If they need to tilt fwd more, move washers from the front side to
the aft side of the firewall.
FUEL SYSTEM
All fuel lines are made from AT0-035X3/8 aluminum tube. These lines are cut to length, bent as required for routing,
and have their ends flared for fittings. Remember to install the B-nut and sleeve before flaring the end of the tube.
An aircraft 37 degree flaring tool is required. Where required, install AN-931 grommets on the lines before install-
ing the final end fittings. Avoid making sharp bends in the tubing as it will tend to collapse and restrict the flow.
NOTE: The fuel systems on the RV-8 and RV-8A are similar. Because of this, the RV-8 Fuel System drawing
82 will be used as the primary reference for both models. Drawing 82A will be used for detailing the differ-
ences for a RV-8A.
Remove the handle from the fuel valve (See “Detail A”, DWG 82). File or sand the small pointer off the end of
the handle. The handle arm will be the pointer indicating which fuel tank is selected.
Make the two F-883B Spacers (See “F-883B Spacer”, DWG 82).
Install the pipe plug and two elbow fittings in the fuel valve (See “Detail A”, DWG 82).
Install the appropriate fitting in the bottom of the fuel valve to match the fuel pump that will be used (See “Detail
A”, DWG 82). If using an Airflow Performance pump for a fuel injection system, hold the fuel valve in position
on the F-883-1 Fuel Valve Bracket to determine the alignment of the AN826-6D fitting relative to the path of the
fuel return line from the fuel pump.
RV-8 Only:
Install snap bushings in the F-822-1 Forward Floor Panel and the F-861PP-L & -R Landing Gear
Cover Plates for routing the fuel vent lines (See “View C-C”, DWG 82).
RV-8 Only:
Install the vent line bulkhead fittings in the fuselage side and orient them as shown in “View E-E”,
DWG 82.
RV-8A Only:
Install snap bushings in the F-890-1 Forward Floor Panel, the F-894-1 Fwd Fuselage Bottom
Skin, and the F-8100C-1 Throttle Quadrant Angle for routing the fuel vent lines (See “View A-A”, DWG 82A).
RV-8A Only:
Install the vent line bulkhead fitting on each side of the fuselage (See “Left Side Iso View”, 82A).
Make the left and right fuel vent lines and mount them in the fuselage (See DWG 82 or 82A). Soft wire (wire
coat hanger) can be used to model the required shape of the line and then copy it with the aluminum tubing.
After mounting the vent lines, curve the tube slightly where it exits the bottom of the fuselage and then trim as
shown in “View C-C”, DWG 82 or “View A-A”, DWG 82A.
RV-8 Only:
Cleco an F-1048D Fuel Filter Bracket in place on the F-822-1 Forward Floor Panel (See “Detail B”
and “ISO View Carbureted Fuel System”, DWG 82). Final-Drill #30 the 3/32 holes common between the fuel
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filter bracket and the forward floor panel.
CAUTION: Do not to go too deep with the drill and damage the F-
850-1 Bottom Skin.
RV-8A Only:
Cleco an F-1048D Fuel Filter Bracket in place on the F-890-1 Forward Floor Panel (See “Left Side
Iso View”, DWG 82A). Final-Drill #30 the 3/32 holes common between the fuel filter bracket and the forward
floor panel.
CAUTION: Do not to go too deep with the drill and damage the F-894-1 Fwd Fuselage Bot-
tom Skin.
Uncleco the F-1048D Fuel Filter Bracket, then deburr the holes in it and the F-822-1 (RV-8) or F-890-1 (RV-8A)
Forward Floor Panel that were drilled in the previous step.
Machine countersink the four #30 holes in the F-1048D Fuel Filter Bracket for flush rivets on the top surface
(See “Detail B”, DWG 82).
Rivet the F-1048D Fuel Filter Bracket in place on the F-822-1 (RV-8) or F-890-1 (RV-8A) Forward Floor Panel
(See “Detail B”, DWG 82).
Make two F-1048E Fuel Cradle Pads (See “F-1048E Fuel Cradle Pad”, DWG 82).
NOTE: Make two addi-
tional fuel cradle pads if you are installing an Airflow Performance fuel pump.
Install an F-1048E Fuel Cradle Pad on both flanges of the F-1048D Fuel Filter Bracket (See “Detail B”, DWG
82). Clamp the ES Airflow Filter in place on the F-1048D Fuel Filter Bracket.
NOTE: Point the fuel flow direc-
tion arrows towards the firewall.
Use the positioning hole in the F-822-1 (RV-8) or F-890-1 (RV-8A) Forward Floor Panel to locate the VA-201
Facet Mount Bracket or F-1048D Fuel Filter Bracket (See DWG 82, “Detail D” for a Facet Fuel Pump or “Detail
F” for an Airflow Performance Pump). Cleco the corresponding hole in the bracket to the positioning hole and
match-drill the remaining holes #30. Match-drill #30 the positioning hole .
Remove the VA-201 Facet Mount Bracket or the F-1048D Fuel Filter Bracket and deburr all holes drilled in the
previous step.
Fuel Injected Engine Installations Only:
Machine-countersink the #30 mounting holes in the F-1048D Fuel
Filter Bracket for flush rivets on the top surface.
Carbureted Engine Installations Only:
Final-Drill #40 the 3/32 nutplate attachment rivet holes in the VA-201
Facet Mount Bracket (See “Detail D”, DWG 82). Machine-countersink the four nutplate attachment rivet holes
for flush rivets, then rivet the nutplates in place.
Rivet the VA-201 Facet Mount Bracket (See “Detail D”, DWG 82) or the F-1048D Fuel Filter Bracket (See
“Detail F”, DWG 82) to the F-822-1 (RV-8) or F-890-1 (RV-8A) Forward Floor Panel.
Mount the Fuel Valve to the F-883-1 Fuel Valve Bracket (See “Detail A”, DWG 82).
Make the tank fuel lines (See DWG 82 or 82A). Size them so they protrude from the sides of the fuselage ac-
cording to the dimension shown in “Iso View Fuel Injected System”, DWG 82. When the wings are later fitted,
the ends can be marked relative to the fitting on the fuel tanks for final trimming.
NOTE: If an inverted fuel
pickup assembly is installed in the fuel tanks, the tank fuel lines should be sized to allow for a forward
bend in the fuel lines after they exit the fuselage as shown in the “Inverted Fuel System Option”, DWG
82.
RV-8 Only:
Secure the right tank fuel line to the front of the F-804A-2 Center Section Forward Bulkhead as
shown in the two ISO Views on DWG 82.
RV-8A Only:
Secure the right tank fuel line to the inboard brace tubes of the WD-821-L & -R Landing Gear
Weldments as shown in “Bottom Iso View”, DWG 82A.
RV-8 Only:
Install snap bushings in the F-802A-1 and B-1 L.G. Bulkheads as shown in the two ISO Views on
DWG 82.
Make the fuel line that connects between the Fuel Valve (bottom outlet) and the fuel filter.
If using a Facet pump, mount it to the VA-201 Facet Mount bracket. Be sure to orient it with the flow arrow
pointing toward the firewall (See “Iso View Carbureted Fuel System” and “Detail D”, DWG 82).
If using an Airflow Performance pump, install the two F-1048E Fuel Cradle Pads on the flanges of the F-1048D
Fuel Filter Bracket, then mount the pump on the bracket. Rotate the pump so the two aft fitting ports are di-
rected toward the fuel line snap bushings in the F-802A-L-1 Fwd L.G. Bulkhead (RV-8) or toward the opening in
the F-802R-L-1 Fuselage Bulkhead (RV-8A), then tighten the clamp (See “Iso View Fuel Injected System”,
