Top Flite TOPA0140 - Manual (Page 46)

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3. Make the throttle pushrod from a .074" x 12"
[1.9 x 305mm] pushrod and a nylon clevis. Bend the
pushrod as necessary and connect the clevis to the
carburetor. Connect other end of the pushrod to the
servo with a screw lock pushrod connector.
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4. Install your rudder and elevator servo in the
servo tray. Drill 1/16" [1.60mm] holes in the servo
tray and mount your servos with the screws that
came with your radio.
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5. Cut a .074" X 36" [1.9 x 914mm] pushrod to a
length of 30" [760mm]. This is the elevator pushrod.
Clean residual oil from the elevator and rudder
pushrod wires with a cloth dampened with alcohol or
other solvent. Cut twelve 3/8" [9.5mm] long
bushings from the white inner pushrod tube, then
slide them, evenly spaced, onto both elevator and
pushrod wires. Make sure you position the bushings
at the ends of the wires so they will not protrude from
the guide tubes, or the controls could become
jammed during flight. If the bushings slide onto the
wires easily, secure them with a drop of thin CA. If
the bushings are difficult to slide on, cut them to a
shorter length. Make sure the CA sets before you
slide the pushrods into the guide tubes! Thread a
nylon clevis about 15 full turns onto the elevator wire.
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6. Connect a small nylon control horn to the clevis
on the elevator pushrod. Slide the pushrod into the
elevator pushrod guide tube and rest the control horn
on the control horn mounting plate on the elevator.
Mount the control horn to the elevator as shown in
the sketch with two #2 x 3/8" [9.5mm] screws.
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7. Slide the rudder pushrod into the rudder
pushrod guide tube. Temporarily connect the ball
stud to the steering arm with the #0-80 nut. Cut the
unthreaded portion of a .074" x 4" [1.9 x 102mm]
pushrod as shown in the sketch so only 5/16"
[8mm] remains. Silver solder the rod to a threaded
coupler. Connect the rudder to the ball link on the
steering arm using the pushrod you just made, a
nylon clevis, a small nylon control horn and two #2
x 3/8" [9.5mm] screws. Shorten the pushrod as
necessary so that when the tail wheel is centered,
so is the rudder.
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