Engine Installation - GREAT PLANES Reactor Instruction Manual

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4. Feed the servo extensions through the fuselage
formers to the fuselage hatch and mount the servos into the
servo bays with the servo splines facing forward using the
hardware included with the servos. Be sure to reinforce the
servo screw holes with thin CA.
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5. Center the servos with your radio system and attach
servo arms pointing down. Using the same procedure as the
ailerons, make up three pushrods using three 12" [305mm]
rods, three nylon clevises and three silicone clevis retainers.
Attach the clevises from two of the pushrods to the outer
holes in the elevator servo arms in order to use the pushrods
as a straight edge.
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6. Align the elevator pushrods parallel with the fuselage
over the elevator halves. Use the position of the pushrods to
mark the locations for the elevator control horns. The elevator
control horns should be positioned over the plywood mounting
plate. The plate is visible from the top of the elevators. Using a
1/16" [2.4mm] drill bit, make a 1/2" [13mm] deep hole at the
marks you made, being sure not to drill completely through the
elevators. Install and remove a #2 x 1/2" [13mm] sheet metal
screw into each of the holes. Harden the holes with a drop of thin
CA. After the glue has hardened completely, install the control
horns with four #2 x 1/2" [13mm] sheet metal screws.
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7. As you did with the ailerons, enlarge the outer holes
in the elevator servo arms using a 5/64" [2mm] bit. Connect
the clevises to the second from the bottom holes in the
control horns and mark the location where the elevator
pushrods cross the outer holes in the servo arms with the
elevators in the neutral position. Bend the pushrods at a 90
degree angle and cut off the excess rod leaving 1/4" [6mm].
Attach the pushrods to the servo arms with nylon Faslinks.
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8. Repeat steps 5-7 for the rudder pushrod. Be careful
when drilling the holes for the rudder control horn as the
rudder is approximately 1/2" [13mm] thick at the control horn
mounting plate. To avoid accidentally drilling completely
through the rudder, drill the holes for the control horn only
3/8" [9.5mm] deep. The thickness of the control horn will
prevent the #2 x 1/2" [13mm] screws from passing through
the other side of the rudder.
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