GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY
Änderungen vorbehalten! Keine Haftung für Druckfehler 3/2008
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[Seite 12]
Mark a centreline on all the hinges using a pencil, as shown in the photo.
This is the method for installing the hinges: push them half-way into the slots in the
control surface, i.e. the pencil lines should just be visible. Glue the hinges in place
using a little low-viscosity cyano-acrylate glue (‘thin cyano’). When the glue has set
hard, insert the hinges into the slots in the fixed panel to a depth of about 1 mm, then
apply two drops of cyano on each side of each hinge and push them into their slots
as far as the pencil lines. Check that the control surfaces move freely to both sides of
centre.
The two elevator panels should now be joined using the steel joiner rod, this time
using UHU plus schnellfest (fast-setting epoxy). Ensure that the two panels line up
accurately; it is best to lay them down flat on the building board while the joints are
hardening. At the same time ensure that the joined elevators are the same length as
the tailplane, and that the leading edge of both elevators forms a perfectly straight
line.
[Seite 13]
When the glue has set hard, insert the elevator and rudder hinges in the slots in the
tailplane and fin to a depth of about 1 mm.
Apply glue to the exposed hinges as previously described, and push the control
surfaces into position, leaving a gap at the pivot axis about 0.5 mm wide to ensure
freedom of movement.
Glue the tailplane and fin in the slots in the fuselage, and position them accurately as
described earlier. Pin the parts in place to prevent them shifting while the glue is
setting.
When the glue has cured completely, it is time to install the tailwheel unit: screw the
tailwheel bracket to the tail end of the fuselage as shown in the photo, with the rudder
pivot axis in line with the vertical axis of the tailwheel unit. Drill 1.5 mm Ø pilot-holes
before fitting the retaining screws.
The steering arm of the tailwheel unit is operated by a plastic driver, which should be
slipped onto the steel wire and screwed to the underside of the rudder as shown.
