34
Hangar 9 Phoenix 7 ARF Assembly Manual
4. Cut a piece of threaded rod (not included) to a length
of 1
3
/
4
-inch (45mm) to be used as the pushrod for the
retract air valve.
5. Use pliers to bend the last 1/4-inch (6mm) 90-degrees.
Slide a silicone clevis keeper (not included) on a nylon clevis
(not included). Thread a clevis on the pushrod until the end
of the pushrod is visible between the forks of the clevis.
6. Attach the clevis to the retract valve.
7. Center the retract servo using the radio system by
setting the ATV (or endpoint) values to 0%.
8. Select a servo arm that will allow the linkage to be
in-line with the retract valve centerline. Having the linkage
offset will prematurely wear the seals in the valve, causing it
to leak. Enlarge the hole in the arm using a 5/64-inch (2mm)
drill bit and pin vise. Connect the linkage to the horn using a
nylon pushrod keeper. Use a flexible adhesive to secure the
valve to the side of the fuselage.
hint
: Position the valve in the fuselage so the actuator
is centered in its range of throw. You will use the radio
system to set the endpoints to correctly operate the
valve once the adhesive has fully cured.
9. Use the ATV (or endpoints) in the programming
of your radio system to properly operate the retract
valve. It will only take a few percent in both directions to
operate the valve.
10. Mount the air fitting to the side of the fuselage.
Connect the lines necessary to operate the retracts, keeping
them as short and neat as possible. Use a longer line for the
connector to the wing. Use the supplied drawing to route the
lines for the retracts.
Nose
Gear
Cylinder
(AIR SUPPLY IN)
Fill Valve
Right Landing
Gear Cylinder
Left Landing
Gear Cylinder
Tee
Fittings
