Servo Mounting Tray; Preparing The Fuselage Push-Rods; Wings; Wing Joiner - GRAUPNER Tangent Alpina 4001 PRO Notice De Montage

possible to the pivot line, and at exactly 90 degrees to the rudder hinge line. Take care to
avoid any restriction caused by the rudder horn touching the shroud in the fuselage.
Now drill a 4 mm hole at the point where the rudder horn is to be installed. The hole should
be as deep as possible but take care not to pierce the skin on the other side of the rudder.
Undermine the hole using a sharp tool so as to increase area available to the adhesive
and bond the rudder horn into place using suitably thickened epoxy.

Servo mounting tray

The servo mounting tray is to be located within the cockpit opening allowing adequate
space for your chosen receiver battery. The weight and position of the receiver battery will
significantly influence the balance point. Carefully check the physical layout of all the
components bearing in mind the recommended centre of gravity.
Assemble the servo mounting tray and mark the position carefully with a pencil. Now
remove the two protective strips from the inside of the fuselage opening and tack the servo
frame in place using an instant adhesive – before bonding the frame securely into the
fuselage with a generous bead of thickened epoxy. Allow to cure.
Note: The servo mounting frame does fit in the fuselage opening! Turn it around carefully
and you will find that it will slip neatly into place. Don't be tempted to apply force, or to
remove too much material which will result in a poor fit.
For a very professional finish some may wish to complete the job by adding a layer of
wetted fibre glass cloth over the entire servo frame allowing about 10mm extra on both
sides to bond with the fuselage sides.

Preparing the fuselage push-rods

Temporarily install the rudder and elevator servos in the cut-outs in the servo mounting
frame according to the instructions supplied with the servos. Cut the control linkages to
length and solder clevis adaptors securely to the wire ends having first thoroughly cleaned
and prepared the joint. Fit clevises and lock-nuts and adjust accordingly such that the
control surfaces are held at neutral when the servo positions are centred.
Finally secure the Bowden tubes to the inside of the fuselage side using the supplied
slotted hardwood blocks and a little suitably thickened epoxy to ensure smooth running
and slop free control linkages always keeping mind to minimise the length of unsupported
control linkages.

Wings

Wing Joiner

The wing joiner consists of a single Ø 12 mm hardened steel joiner which is ample to carry
the flight loads.

Fuselage wing mount

Graupner GmbH & Co. KG * Henriettenstraße 94-96 * D - 73230 Kirchheim/Teck *
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Fig 5. Servo Mounting Tray
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www.graupner.de