servo compartment, avoiding the stringers or the rudder cable
extension. These cables must be unobstructed, with a straight run
to the servo. Reach into the fuselage and pull the cable into the
servo compartment.
Use a piece of tape at the rear of the
fuselage, to hold the cable end in place.
Likewise, use a piece of tape to hold the opposite end of this cable
to the top of the fuselage side, in the servo compartment. Insert
the second cable into the opposite side of the fuselage, at the pull-
pull exit. As before, feed this cable into the servo compartment,
being careful to not cross or tangle it with anything inside of the
fuselage. Use tape to secure both ends of the cable.
At the servo compartment, both cable ends are each prepared
with a pull-pull R/C link fitting. Slip a brass swage tube onto the
cable end and then, thread the end of the cable through the hole
in the end of the threaded brass pull-pull fitting. Thread the loose
end of the cable back through the brass swage fitting, pulling it out
about 1/2". Close the loop of cable to within about 1/2" or so to the
end of the pull-pull fitting and use needle nose pliers to firmly crimp
the swage in the middle, securing the cable loop. Repeat this
process with the other cable end in the servo compartment.
Thread the round, knurled locking "nut" all the way onto the
threaded end of the pull-pull fitting and thread the R/C link in place.
Leave equal an amount of threads exposed to make final
adjustments later, when the opposite ends of the cable are rigged
for the rudder horns.
Connect the R/C links to each end of the servo output arm and
place the arm squarely back onto the rudder servo. Thread the
servo arm retaining screw back in place into the servo. At the rear
of the fuselage, pull each cable out of its exit, taking up the slack
and temporarily tape the loose ends of the cable to the fuselage
sides for now.
❑
8) The throttle pushrod is now connected to the throttle servo.
Plug the throttle servo into the receiver and turn the radio system
on. Use the transmitter to check the throttle servo for the correct
direction of travel for "high" and "low" throttle - reverse the servo
travel, if needed. Place an output arm onto the servo, positioning
it to provide equal travel in both directions. Turn the radio system
off, for a moment.
If the outer throttle tube extends too far into the servo
compartment, it may restrict the movement of the inner throttle
pushrod with the R/C link attached. If this is the case, remove the
R/C link at the engine and pull the pushrod out 4" or 5". In the
servo compartment, trim the end of the outer pushrod tube to
within 1/8" of the back side of the former. Slide the inner pushrod
back in place and reconnect it to the engine throttle arm.
The throttle pushrod is now cut to the correct length. Thread the
22mm stud into the R/C link, leaving enough threads on each side
for adjustments. Fit the R/C link to the outer hole in the servo
output arm and place the arm onto the servo, with the threaded
end of the stud facing toward the engine, parallel with the throttle
pushrod. Turn the radio system on and move the throttle stick to
position the servo output arm to the rear, with the throttle trim in
neutral on the transmitter. Pull the pushrod back as far as the
engine throttle arm allows. Use a marker pen to mark the throttle
pushrod where it should be cut and still accept 1/4" of the threaded
stud.
Remove the R/C link and stud from the servo arm and remove the
stud from the R/C link. Disconnect the R/C link from the engine
throttle arm and pull the throttle pushrod completely out of the
fuselage. Use a razor blade to cut the tubing at the mark just
made. Install the 22mm stud into the pushrod tube, about 1/4",
using an electric drill. Reinstall pushrod back into its housing tube
at the firewall, inserting the threaded stud end.
In the servo
compartment, thread the R/C link onto the stud. Reconnect the
forward R/C link to the engine throttle arm.
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