Hangar 9 Twist 40 ARF Version 2 - Manual (Page 13)

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Section 13: Linkage Installation Section 13: Linkage Installation (continued)
Required Parts
Fuselage assembly • Wing assembly •
4 3/8-inch pushrod wire (2) • Nylon clevis (4) •
10 5/8-inch pushrod wire (2) • Clevis retainer (4) •
Nylon wire keeper (5) • Nylon control horn (4) •
1.5mm x 15mm screw (12) •
Required Tools and Adhesives
Drill bits: 1/16-inch, 3/32-inch • Drill •
Phillips screwdriver (small) •
Step 1
Slide a clevis retainer onto a nylon clevis. Thread a clevis onto a
105/8-inch wire, a minimum of 10 turns.
Step 2
Remove the backplate from a control horn using side cutters or
a sharp hobby knife.
Step 3
Position the control horn on the elevator so the horn aligns
with the hinge line of the elevator. Mark the position for the
mounting holes using a felt-tipped pen.
Step 4
Drill three 3/32-inch holes through the elevator at the locations
marked in the previous step.
Step 5
Place 2–3 drops of thin CA into the hole to harden the wood.
Repeat this for each of the three holes.
Step 6
Attach the control horn using three 1.5mm x 15mm screws and
the control backplate.
Step 7
Center the elevator servo electronically using the radio system.
Install a servo arm onto the elevator servo. Attach the pushrod
with clevis to the control horn. Physically place the elevator
control surface in neutral. Mark the pushrod where it crosses
the holes in the servo arm.
Step 8
Bend the wire 90-degrees at the mark made in the
previous step.
Step 9
Cut the wire 3/8-inch (10mm) above the bend.