Top Flite TOPA0705 - Manual (Page 8)

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10. Place a black nylon control horn onto the
plywood mounting plate in the aileron in line with the
servo arm. Drill a 3/32" [2.4mm] hole through each
of the holes in the control horn. Drill only through the
plywood plate.
Do not drill through the top of the
control surface . Mount the horn with four #4 × 3/8"
screws.
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11. Install the modifi ed control horn to the fl ap
using the same method used for the aileron.
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12. Each aileron and fl ap pushrod is made from
a 5-3/4" [146mm] pushrod wire threaded on one end,
a threaded metal clevis, a 4-40 nut, a metal solder
clevis and two silicone clevis keepers.
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13. Screw the 4-40 nut and the threaded metal
clevis onto the pushrod wire. Attach the clevis to the
third hole from the bottom of control horn. Attach the
metal solder clevis into the outer hole of the aileron
servo arm. Center the aileron servo arm and the aileron.
Mark on the pushrod wire where to cut the wire. Remove
all of the pushrod wire components. Solder the metal
solder clevis to the pushrod. If you are not familiar with
soldering, follow the “Hot Tip” that follows. After the
solder cools, apply threadlocker to the threaded wire
and tighten the nut against the clevis.