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LINKAGE HOOK-UP
124.
Draw a line on the elevons straight back from each servo arm. Measure 7mm (1/4”)
back (towards TE) along this line from the elevons’ leading edge and mark. This will be the
position of the front of the base of the Dubro control horns.
125.
Locate the package of Dubro control horns included in the kit. Separate the control
horns and their mounting back plates. Hold a control horn in place and mark the position for
the two holes. Drill the holes and install the control horns by screwing them onto their
plastic back-plate, sandwiching the balsa elevon in-between. Repeat for the second elevon’s
control horn.
126.
Install the Dubro E-Z connectors onto the control horns. Just use the re-useable
nylon push-nut for now until its position on the control horn has been finalized. The second
hole from the top is a good place to start.
127.
Locate the two metal pushrods (with attached steel clevises) included in the kit.
Screw the clevises so that they are positioned towards the middle of the threaded section of
the rods.
128.
Push the metal pushrod through the hole in the E-Z connector (ensuring its lock-
screw is unwound) and attach the clevice to your servo arm, clamping together with a pair of
pliers. Repeat for the second pushrod.
129.
Turn on your receiver and transmitter so that the servo arms are centered in their
neutral position. While holding the pushrod in place, move the elevon (the E-Z connector
should be free to slide up and down the pushrod) so that its trailing edge is just slightly
above the fixed trailing edge of the wing. While in this position, tighten the lock-screw on
the EZ-connector to fix it to the pushrod. Repeat for the second elevon.
130.
Trim off the excess length of the pushrod using a pair of side-cutters/pliers.
FIN ATTACHMENT
Attachment of the front portion of the fins can either simply rely on a friction fit into the foam
or be held in place with tape as per the following procedure. We suggest not gluing them into
place because it can make replacing them after damage difficult.
131.
Cut slits in the covering (and filament tape) over the fin slots on the top surface of
the wing and insert the fins into the wing so that they butt up against the contour of the
wing’s top surface.
132.
While in this position, mark a 10mm (3/8”) long line at the leading edge of each of
the fins level with the top surface of the wing.
133.
Remove the fins and cut a 10mm (3/8”) long slit through the leading edge of each fin
along the lines you marked.
134.
Take a length of cross-weave filament tape and apply covering to it to match the top
surface of the wing near the fin. Alternatively use a good quality thick clear tape that is UV
resistant.
135.
Cut off a 25mm (1”) piece of this covered tape and slide it into the slit you made in
the leading edge of the fin so that the fin has tape sticking out either side and in front of it.
Push the fin all the way down and secure with the tape onto the top surface of the wing.
136.
Take another strip of this covered filament tape (or clear tape) and secure the trailing
edge of the fin by wrapping the tape from the fin down and around to the bottom surface of
the fixed balsa trailing edge piece. The fin should be secured down on top of the fixed balsa
trailing edge piece (not against its end) so that the elevon is still able to move freely. The
