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Jabiru J450 Constructors Manual
Pre-Paint>Wings>Fit vibration damper to strut
Tuesday, April 6, 2010
188 of 343
Pre-Paint>Wings>Fit vibration damper to strut
Objectives of this task:
To fit the vibration damper strips to the rear underside of both struts prior to painting.
Materials required:
Vibration damping strips (approx
975 x 11 x 3mm, pack of 2) ►
5-minute Araldite and flock
TAPK 3-3 1/16” CSK pop rivets (10 of, 5 per strut)
Fit the vibration damper
Lay both struts on your workbench and mark them as being either
left or right (the right side has the pitot head fitted) and then mark
the top and bottom end of each strut. Mark the top side and the
underside of each strut as they will be when fitted to the aircraft.
Measure and mark a position 460mm up from the bottom of each
strut on the rear underside of each strut. This is the locating mark
for the lower end of the vibration damper.
Place the damper strip on the strut as shown at right and on the
drawing on the next page, 2mm in from the rear edge of the strut,
460mm up from the bottom of the strut, and hold it in place with
tape or by hand.
Drill a 1/16” hole through one end of the damper and the strut and
place a pop rivet into the hole to locate the damper, and then,
working one hole at a time, drill 4 more evenly spaced holes
through the damper and the strut, using a rivet in each hole to
locate the damper as you work along the damper strip.
Once all of the holes have been drilled, remove the damper from
the strut and use a 120° countersink bit to countersink the holes
on one side of the damper strip just deep enough to flush fit a
countersunk pop rivet.
Remove the burrs from all of the holes and roughen both surfaces
to be joined with 240 grit sandpaper and then clean the area
thoroughly with acetone.
Mix a small batch of 5-minute Araldite and flock and coat the
back of the damper with a thin layer and then pop rivet the
damper to the strut, working along from the bottom to the top.
Wipe away any excess Araldite and flock with a clean cloth.
Leave to cure and then set the struts aside for later use.
460mm
Damper
strip
Bottom