Install The Control Horns - GREAT PLANES Performance Reactor Instruction Manual

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5. Install the elevator and rudder servos. Use a 1/16" [1.6mm]
drill bit to drill the holes and use thin CA to harden the wood.

Install the Control Horns

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1. Center your servos. Attach a 1-1/2" [38mm] single-
sided servo arm to each servo so that the arm is 90° to the
servo case when the servo is centered. Install the arms so
that they point down.
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2. Turn the fuselage over (a foam building stand is helpful
here). Use a felt-tip pen to make a mark on each elevator
that is 7/8" [22mm] from the side of the fuselage.
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3. Center a control horn over the line that you made
making sure that the clevis holes are also centered over the
hinge line. Hold the horn in position and use a 1/16" [1.6mm]
drill bit to drill four holes in the elevator. Remember to only
drill 1/2" [13mm] deep.
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4. Use four #4 x 1/2" [13mm] sheet metal screws to mount
the elevator control horns. Remove the screws and use thin
CA to harden the threads you created in the wood. Reinstall
the control horn.
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5. Make a line 2" [51mm] from the bottom edge of the
rudder. Drill the holes for the rudder horn and install it with
four #4 x 1/2" [13mm] sheet metal screws.
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6. Install a 4-1/2" [114mm] pushrod to the rudder servo
and rudder. The pushrod should be installed on the servo
arm so that it is 1-1/4" [32mm] out from the center of the
servo arm and in the outermost hole of the control horn. Turn
on your radio and center the rudder by adjusting the clevis.
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