Specifications

Page 27
q Enlarge the hole in each side of a servo horn that is 3/4" (19mm) out from
the centre of the servo horn, using a 5/64" (2mm) diameter drill bit.
q Install one Z-Bend coupler into the hole in each side of the servo horn that
you enlarged.
q Centre the elevator servo and install the servo horn onto the servo, making
sure that it's centred, then install the servo horn retaining screw to secure the
servo horn to the servo.
IMPORTANT You may need to cut a shallow notch in the edge of the servo
tray support bulkhead to clear the Z-Bend coupler.
q Use a couple of pieces of masking tape, taped between the elevator half and the stabiliser, to hold the elevator half centred.
q Attach the stranded cable from the bottom of the elevator to the Z-Bend
coupler nearest the side of the fuselage, then attach the stranded cable from
the top of the elevator to the Z-Bend coupler nearest the centre of the fuselage.
Use the same techniques that you used to attach the stranded cable to the
threaded couplers.
IMPORTANT Make sure that both lengths of stranded cable are pulled
tight. There should not be any slack in either of the two stranded cables.
q Repeat the previous procedures to assemble and install the second set of
stranded cables and threaded couplers to the other elevator half.
q Remove the masking tape from the elevator halves and double-check that both servo horns and both elevator halves are still centred.
If the elevator halves are not centred, readjust the clevises until they are.
q
Move the elevator halves up and down several times to ensure that the control linkages do not bind. They should operate smoothly
in both directions.
q Check the tension of the stranded cables for each elevator half. To do this do the following: move the elevator control stick back. Let
the control stick go and check to see if the elevator halves return to centre. Do this a couple of times in each direction. If the elevator halves
do not come back to centre, one or both stranded cables are too tight. You can adjust the tension of the stranded cables by adjusting
the clevises. Ideally, the stranded cables should be as tight as possible, while still allowing the elevator halves to return to centre. The
stranded cables should not have slack in them, yet they should not be so tight that the linkage(s) and/or the servo(s) bind.
q Repeat the previous procedures to secure the second set of stranded cables
and Z-Bend couplers to the second elevator servo.
IMPORTANT Remember to attach the stranded cable from the bottom
of the elevator to the Z-Bend coupler nearest the side of the fuselage, then
attach the stranded cable from the top of the elevator to the Z-Bend coupler
nearest the centre of the fuselage, to ensure both sides are the same.