
Jabiru J450 Constructors Manual
Pre-Paint>Fuselage>Empennage>Fit elevator
Tuesday, April 6, 2010
96 of 343
Fit the elevator hinges
Test fit the hinges using 2 Clecoes per side and slide the hinge pin into place as shown above.
Fit the 2 outer hinges first – this will hold the elevator in place while the inner hinges are
fitted.
Each hinge pin is inserted from the inside towards the outside of each hinge. Mark the
location of the end of each hinge pin (circled at above right). Check that the elevator can
swing freely with no binding in the hinges: adjust the hinge mounting holes if required.
Check that the horizontal stabiliser to elevator gap is even along the full length then remove
the elevator and hinges. Leave the horizontal stabiliser clamped down.
Sand the flat side of each hinge and the locations where they will be fitted, then mix a small
batch of resin and coat each area. Add flock to the remaining resin and apply a 2mm layer of
flock to each hinge and flock into place using clean Clecoes in the outer holes as before.
Using a 120° countersink bit carefully countersink the 4 inner holes just enough so that a
countersunk rivet head will sit flush with the surface when fitted and rivet the 4 inner holes
with countersunk rivets. Now remove the Clecoes from the outside holes one at a time,
countersink each hole and fit a countersunk rivet until each hinge has 8 countersunk rivets.
Take care to keep flock away from the hinge pins during this step: clean the hinges while the
flock is still wet and then separate both parts (horizontal stabiliser and elevator) and leave
overnight to cure. Clean the Clecoes in acetone after use.
Next day use a rat tail file to make a slot into the horizontal stabiliser at
each hinge pin mark (example circled at above right), fit the hinge pin
and the hinge pin retainer, mark the retainer screw hole and drill a 3/32”
hole. Pop rivet an anchor nut under each screw hole using 2 x 3/32”
countersunk rivets.
Fit the trim tabs
Mark the trim tab locations on the elevator from the dimensions given on the drawing on the
previous page. Note that the trim tabs fit onto the top of the elevator and face downwards.
Clamp the trim tabs in position using spring clamps and drill the 3 holes as shown. Lightly
sand the surfaces to be joined, then mix a small batch of resin and coat the surfaces to be
joined. Add flock to the resin and stir in thoroughly, then apply a 2mm layer of flock to each
trim tab and fit into place with 3 self-tapping screws.
Clean away any excess flock with the mixing stick, leaving a smooth radius around the entire
join, and leave overnight to cure. Next day remove the self-tapping screws.
Содержание J450
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