11
Installing the rudder and elevator horns
Screw an M2 locknut and a clevis onto the threaded end of each rudder and elevator
pushrod. Slip the pushrods into the plastic guide tubes and connect the clevises to
the horns.
The horns should be positioned on the control surfaces in such a way that the clevis
linkage hole lines up exactly with the hinge pivot axis. Drill holes for the retaining
screws in the control surfaces.
Note that the rudder horn has to be modified to the shape shown in the photo below.
With the horns in place, file the projecting screw ends flush with the spreader plate.
The rudder and elevator servos must now be centred accurately: connect the
receiving system, switch the transmitter on and check that the associated trims are at
centre.
Install the servos in the servo plate, positioned in such a way that the pushrods
coincide exactly with the linkage holes in the servo output arms. Drill 1.5 mm Ø pilot-
holes for the servo retaining screws, then fix the servos in this position using the
screws supplied in the accessory packs.
