heat the tube briefly (i.e. with the side barrel of a soldering iron) until it is a tight fit on both parts.
Whilst the heat shrink tube is cooling down, squeeze the joint area with tweezers / small pliers.
The forms a tight and smooth-running "hinge" connection to the aileron horn.
Important: Power the servos up with the radio set before doing this step, and set the neutral
position of each of the servos so that they are exactly 90 degrees to the direction of flight.
Avoid unequal deflections of the ailerons !
11) Attaching the upper fuselage part
• Important: make sure it is at a right angle!
• Method 1: Using UHU-Por ®, spread on the glue and leave to dry -during which you can make
several adjustments of position of the two fuselage halves if necessary
• Method 2: Using cyano: Place in correct position, and use cyano (sparingly) along the
connecting line, make sure at a right angle and use a little cyano activator -leave to harden
Figure 16: aileron control horn
Figure 17: aileron servo
Figure 18: top of fuselage, cockpit / canopy area
END Page 8 of 12
12) Rudder linkage
• Bevel the front edge of the rudder
• Glue the rudder control horn, and note it is not symmetrical ! - As an installation aid, look at the
rudder control horn, and mark the top of the central part of the horn according to how it fits with the
bevelled front edge of the rudder -see the Figure
• Attach the rudder using hinge tape and also attach fin struts using 1 mm carbon rod -the length
of each strut is approximately 15cm.
• Glue the rudder servo in the prepared hole, in the middle position above the wings -if necessary
alter the size of the hole for the servo you will use
• Important: Check the neutral position of the rudder servo and fit the servo arm, or an extension
servo arm if necessary -the servo arm length should be equal on either side. The rudder servo
horn should be about 5mm longer than the length of the rudder control horn itself.
• Tie the enclosed closed loop cable to the servo arm and fix with a small drop of cyano
• Then pull the cable through the holes on the rudder control horn and make sure that both sides
are equal in tension -do this in several steps -and ensure that the tension is not too high !
• The control loop cable can be fixed at the rudder control horn, with a small drop of cyano, as long
as the tension has been set correctly on both sides, and the rudder is centred.
• Note: the closed loop cable has approximately the same thermal expansion coefficient as the
foam, so further tensioning should not be required!
Figure 19: Rudder control horn -note it is not symmetrical
Figure 20: Rudder and closed loop
Figure 21: Rudder servo and closed loop
END Page 9 of 12
13) Elevator linkage / using optional carbon rod
• Place the elevator servo (horizontally) into the prepared hole in the (rear) section of the upper
fuselage -note the hole (milled) for the location of the servo horn in the rear fuselage -and also
note that the push rod runs along the bottom!
• To give full elevator movement, the elevator servo horn should have a length around 25mm!
