Great Planes Edge 540 1.60-43cc Performance Series ARF - GPMA1414 - Manual (Page 11)

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inline with the servo arm. Use a T-pin to lightly puncture the
covering to be sure you are over the plywood plate.
o o 7. Place a heavy-duty nylon control horn on the
aileron, positioning it as shown in the sketch inline with the
second outer hole of the servo arm. Mark the location for the
screw holes. Drill through the marks you made with a 3/32"
[2.4mm] drill bit (Be sure you are drilling into the plywood plate
mounted in the bottom of the aileron. Drill through the plate
only.
Do not drill all the way through the aileron!). Using
a #4 x 1/2" [13mm] sheet metal screw (there are different
length #4 sheet metal screws included with the model, so
be sure that you are using the correct length screw for this
step), install and then remove a screw into each of the holes.
Harden the holes with thin CA. Install the control horn with
four #4 x 1/2" [13mm] sheet metal screws.
o o 8. Locate a .095" x 6" [2.4mm x 152mm] pushrod wire
threaded on one end. Screw a 4-40 nut, a silicone clevis
retainer and a threaded metal clevis onto the threaded end of
the wire 20 turns. Tighten the nut against the clevis and then
install the clevis on the outer hole of the aileron control horn.
o o 9. Be sure the aileron servo is centered and the servo
arm is parallel to the hinge line. Install a metal solder clevis
onto the second outer hole in the servo arm. Center the
servo arm parallel with the aileron hinge line and center the
aileron. Using the solder clevis as a guide, mark where to cut
the pushrod wire. Remove the pushrod and clevis from the
control horn and the solder clevis from the servo arm. Install
another silicone clevis retainer onto the wire and solder the
clevis to the pushrod using the
“Expert Tip” that follows.
hOw TO SOLDER ThE CLEVIS TO ThE pUShROD
1. Where the pushrod will make contact with the solder
clevis, roughen the wire with 220-grit sandpaper.
2. Use denatured alcohol to remove any oil residue from
the pushrod wire.
Note: Soldering should be done with
silver solder, not an electrical solder.
3. Apply a couple of drops of flux to the wire. Slide the solder
clevis onto the wire. Using a small torch or soldering iron
heat the wire, allowing the heated wire to heat the solder
clevis. Apply a small amount of solder to the joint. When
the wire and the clevis are hot enough the solder will flow
into the joint. Avoid using too much solder causing solder
to flow out of the joint and clump. Use just enough solder to
make a good joint. Allow the wire and clevis to cool.
4. Put a couple of drops of oil onto a rag and wipe the
joint. This will prevent rust from forming on the joint.
o o 10. Install the pushrod and clevises to the second
outer hole in the servo arm and the outer hole in the control
horn. Adjust the linkage until the aileron and the servo arm
are both centered. Then tighten the nut against the clevis
with threadlocking compound. Slide the two silicone clevis
retainers to the end of each clevis.
o 11. Repeat these steps for the right wing panel.
Join the wing panels
o 1. Trim the covering from the servo lead cutouts in the
bottom of the wing panels near the root ribs. Feed the aileron
servo leads through the cutouts. Taping the leads to the top
of the wing will keep them out of the way when joining the
wing panels.
o 2. Locate the two aluminum wing joiner pieces and the
wood wing joiner piece. Use 220 grit sandpaper to thoroughly