GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY
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10/2006
6
the thread-lock fluid to cure.
Attach the horns to the elevators and rudder as shown in the next series of pictures. Note that the linkage hole in the
horns must line up correctly with the hinge pivot axes.
When installing the rudder horns it is important to ensure that they line up accurately with the exit holes for the rudder
cables.
The covering film must be removed from the joint surfaces before the tailplane can be glued to the fuselage. Place the
tailplane on the fuselage, and adjust its position until it projects by exactly the same amount on both sides, and is at
right-angles to the fuselage centreline when viewed from above. Mark the outside shape of the fuselage on the
underside of the tailplane using a felt-tip pen.
Remove the covering film from the central area of the tailplane by running a hot soldering iron just inside the marked
lines. Peel the film away from the wood.
The tailplane can now be glued to the fuselage.
Align the tailplane again as described at the start of this section, and pin it in place while the glue sets hard. When the
joint has cured, offer up the fin and mark the outline of the fairing on the tailplane. Once again, remove the film from
the joint surface just inside the marked lines after melting it with a soldering iron.
The fin can now be glued in place permanently using UHU coll. Glue the bottom rudder hinge in its slot at the same
time.
Allow the glued joints to set hard, then fit the two elevator servos in their apertures and screw them in place. Extend
the servo leads using the appropriate extension leads, and secure the connectors as already described. Fit the
clevises on the pushrods and secure each with a drop of UHU thread-lock fluid: apply the fluid to the threaded end,
screw the clevis onto the threads, and connect the pushrod to the elevator horn and the elevator servo output arm.
Adjust the length of the pushrods if necessary (servo centre = elevator neutral), then leave the thread-lock fluid to cure
fully.
Locate the clevises attached to the rudder cables, and connect them to the rudder horns. Squeeze the crimp sleeves
onto the cables as shown in the photo, and tighten the locknuts on the threaded couplers.
The rudder servo can now be installed in the fuselage. Attach the front end of the two pull-cables to the double-ended
servo output lever as shown in the picture. Ensure that the rudder and the servo are both at centre before squeezing
the crimp sleeves onto the cables and adjusting the clevises as described above.
The tailwheel unit can now be fixed to the tail end of the fuselage. The first step is to glue the two driver lugs into the
bottom of the rudder as shown in the photo.
Slip the tailwheel onto the axle, and fit the collet to secure it. Secure the grubscrew in the collet with a drop of UHU
thread-lock fluid.
Thread the projecting prong of the tailwheel unit through the two driver lugs, and attach the plastic bracket to the
fuselage using two pan-head self-tapping screws. Take care to position it exactly on the fuselage centreline.
Fix the main undercarriage units to the fuselage using the retaining screws provided. Once again, secure the screws
with UHU thread-lock fluid.
The next step is to attach the wheel spats, together with the wheels and wheel axles, but first the spats have to be
trimmed as shown in the photo.
Take care to produce a handed pair of spats, i.e. they are different left and right. The centre of the wheel axle should
be drilled about 8 mm above the bottom edge of the spats.
Attach the wheel axles to the undercarriage units, together with the wheels, washers and retaining nuts.
Assembling and installing the fueltank
Push a length of fuel tubing onto the fueltank clunk weight. Push the free end of the fuel tubing onto one of the tubes
in the fueltank stopper, and check that the clunk will be able to move freely inside the tank
without
binding or jamming
when the stopper is in place. Soften the other two tubes (filler and vent) using a heat-gun or match, and bend them to
the shape shown in the photo; one should point down (later used for filling the tank), the other up (overflow line).
Extend each with a short piece of fuel tubing so that they reach the top and bottom of the tank respectively. Now push
the tank stopper over the neck of the fueltank and clamp it in place by tightening the cross-head screw. It is important
to tighten the screw to the point where the tank is completely sealed. You can check this with a submersion test: hold