Jabiru J450 Constructors Manual
Post-Paint>Wings>Fit flaps
Tuesday, April 6, 2010
295 of 343
Tape the flap into position with a length of
cloth tape as shown arrowed in the photo at
right.
Fit and set the other flap in the same manner.
The flaps are now in the fully retracted
position and are ready for the flap push rods
to be connected to the flap drive arms in the
next step.
It may be necessary to trim the lower front
inboard section of the flap to minimise any
risk of chafing the fuel lines when the flaps
are in the fully retracted position.
Connect and adjust the flaps
Apply power to the flap motor and extend the
actuating shaft fully as shown at right.
Fit a rod end with a plain locking nut to the
free end of the flap push rods and screw the
rod end into the flap push rods until the hole
in the rod end lines up with the hole in the
flap drive arm, then fit the rod end into the
clevis in the flap drive arm as shown below
right with an AN3-10A bolt with a 3/16”
washer under the head of the bolt and another
3/16” flat washer and a Nyloc nut and tighten
the nut to safety. Tighten the plain locking
nut firmly.
Repeat the process for the other flap. At this
point the flaps have been fitted and adjusted.
Apply power to the flap motor and extend the
flap to the first position and check both flaps
for clearance from the fuselage.
Have someone watch each flap as you
continue to extend the flaps to the second
“full flap” position and check each flap for
clearance from the fuselage until the full flap
position is reached.
If you set your flap end clearances correctly in the
Pre-Paint>Wings>Test fit wings
task there
should be no problems, but if the flaps do touch the fuselage then you will need to remove the
flap and cut the end of the flap away to maintain a 5mm clearance from the fuselage.
This completes the
Post-Paint>Wings>Fit flaps
task.