Jabiru J450 Constructors Manual
Pre-Paint>Wings>Mount flaps
Tuesday, April 6, 2010
172 of 343
Position the flap
The flap is positioned in 3 stages:
Initial flap position
: lay 2 lengths of aluminium angle on the wing surface between the outer
peel cloth squares and fix to the forward part of the wing with cloth tape as shown above.
Place the front of the flap onto the lip at the trailing edge of the wing and clip the trailing edge
of the flap to the aluminium angle with spring clips (circled in yellow above).
Lateral flap position
: Now the flap is positioned laterally. The intention is to position the
flap so that the distance from the outside of the wing mounting lugs to the outside of the flap
drive arm is 40mm.
Lay a straightedge or long ruler along the outside of the wing mounting lugs as shown above
and measure back from the ruler to the side of the flap drive arm.
Move the flap gently until you are satisfied that the distance from the outside of the wing
mounting lug to the flap drive arm is exactly 40mm.
When that position is correct mark the wing and the flap with 2 ruled lines fore and aft over
the gap between the flap and the wing (use a marker pen) so that you can easily realign the
flap to the wing.