Top Flite TOPA0905 - Manual (Page 28)

❏
8. Install the air lines to the air valve. Remove the
retaining nut from the air valve, insert the valve into
the hole in the air valve tray, and secure the valve to
the tray with the retaining nut and thread locker.
❏
9. Place the retract servo into the tray. Drill a 1/16"
[1.6mm] hole through the servo mounting holes and
into the tray. Insert and remove the mounting screws
that came with your servo. Apply a couple of drops of
thin CA to harden the threads. Once the glue has
hardened re-install the mounting screws.
❏
10. Install a nylon ball link onto the 2-56 x 6"
[152mm] threaded rod approximately 15 turns. Then,
install the nylon ball link onto the ball. Center the air
control valve arm and center the servo. With a fine tip
marker, mark the wire where it aligns with the outer
hole of the servo arm. Make a 90 degree bend on the
mark. Cut the wire so the wire is 3/8” [10mm] in
length after the bend. Insert the wire into the servo
arm and lock it in place with a nylon Faslink.
Adjusting the Retractable Landing Gear
After connecting the air lines as explained in the
instructions that came with the Air Control kit, fill the
air tank to 100psi and try cycling the landing gear.
The landing gear should cycle up and down freely. If
they do not, here are some troubleshooting tips.
The gear does not move up or down:
Check to be sure the control screws on the variable
rate valve are open.
The landing gear moves up and down but
is not smooth:
When mounting the landing gear onto the landing
gear rails, it is important that the rails are exactly
parallel to one another. If not, when you tighten the
screws the mounting flange of the gear mechanism
can twist slightly. Try loosening the mounting screws
a little and try cycling the landing gear again. If the
gear now works, re-tighten the screws one at a time,
cycling the gear after each screw is tightened. When
you find out which screw is pulling down too hard on
the mounting flange, slip a shim under the mounting
flange and then re-tighten the screw.
One of the landing gear goes up while the
other goes down:
Most likely you have crossed one of the air lines.
INSTALL ENGINE & THROTTLE SERVO
O.S. 1.60 Two-Stroke Engine
❏
1. On page 43 of this manual you will find the
engine mounting template. Cut out the template from
the manual and tape it to the firewall, aligning the
lines of the template with the lines on the firewall.
❏
2. On each of the four marks drill a 7/32" [5.6mm]
hole. Install an 8-32 blind nut into each of the holes
from the back of the firewall. Install a #8 flat washer
onto an 8-32 x 1" [25mm] socket head cap screw.
Then, tighten the screw into the blind nut, pulling it
into the firewall. Do this for all four blind nuts.
Did you know… Early in World War II, the need
for a compact executive-type transport or courier
aircraft became apparent and in 1942 the United
States Army Air Force ordered the first of 270
Model 17s for service within the United States and
overseas as the UC-43.
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FA S LINK
2-56 (.074")
PU S HROD WIRE
S ERVO
HORN