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Note: ARF customers will need to remove a little of the covering material while those
building the ARC version may prefer to wait until after the wings have been covered before
bonding the control horns in place.
Ailerons: Mark out the position of the aileron control horns on the lower surface of the aileron.
The horn should be positioned directly opposite the scoop in the servo cover and about 3
mm from the aileron leading edge.
Drill a series of 2mm holes and cut away the excess to form a neat slot to accommodate the
supplied GRP control horns. Take care not to cut through to the upper surface of the aileron
and undercut a little of the material inside the slot to allow for additional adhesive.
Locate the aileron control horn such that the eye is at 90° to the hinge line and about 12mm
above the lower surface of the aileron.
Flaps: Similarly locate the slots to accommodate the supplied GRP flap control horns about
3mm behind the leading edge of the flap such that the eye is located about 10mm behind the
flap leading edge and about 13mm above the lower surface of the flap.
As before, drill a series of 2mm diameter holes and cut away the excess to form a neat slot
to accommodate the supplied GRP control horns. Take care not to cut through to the upper
surface of the aileron and undercut a little of the material inside the slot to allow for additional
adhesive.
Once satisfied with the position of the control horns, roughen the ends of each and bond the
GRP control horns into place using thickened epoxy and allow to cure thoroughly.
Prepare the cable harnesses required to connect the wing mounted aileron and flap servos
to the receiver system in the fuselage. Be sure to use good quality twisted servo leads with a
wire diameter of no less than 0.25 mm ² capable of delivering adequate current for the
multiple wing servos under load. Pay careful attention to the solder connections ensuring
good mechanical and electrical joint in each case. Be sure to insulate each joint with heat-
shrink for additional security. Some may wish to apply a bead of silicone compound to the
soldered ends to avoid stress points when handling the connectors.
Note: Quality cable sets, including connectors and separation filters are available via the
specialist model trade; choose high quality components for optimum reliability. In the case
where flying leads are used, take care always to handle the leads only by the connectors.
Don't pull on the leads!
ARF – customers should now proceed with the installation of the radio control
system.
ARC – customers should no proceed with the finishing/covering of the airframe.
GRAUPNER GmbH & Co. KG * Henriettenstrasse 94-96 * 73230 Kirchheim/Teck
12
The basic airframe is now complete!
www.graupner.de
*
www.tangent-modelltechnik.com
Wing control horns.
Wing servo wiring.
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