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Swinnys 4 Place Bush Explorer
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Date:  1-14-2014
Number of Hours:  8.00
Manual Reference:  
Brief Description:  Flap alignment with the wing.

Before drilling the 3/32 holes out to 1/8", I positioned the flap onto the wing and clamped at the hinge points.
I was already expecting the the flap would need a little twist to match the wing because of the built in washout in the wing, and this proved to be the case, so I noted the amount of twist required, removed the flap back onto the table.

Before drilling the 1/8' holes for the rivets, I packed one corner of the flap to give the amount of twist requied (this was about 1/4" of packing) after removing most of the clekos and clamped the flap down to the table.

I then drilled the 1/8' holes, clekoed and repositioned the flap onto the wing.

Perfect alignment, however I did find that in order to get the hinge bolt holes in the centre of the mounting plates attached to the flap spar, I had to change these plates to being 1.5 " wide, otherwise the hinge bolts would have been too close to the edge of the original supplied plates.

I then dismantled the flap, deburred all holes, primed the inside surfaces of the skins.
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Flap assembled in clekos

Flap assembled in clekos

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Checking for alignment on the wing.

Checking for alignment on the wing.

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Note that there is no wide gap between the top wing skin and the flap skin.

Note that there is no wide gap between the top wing skin and the flap skin.

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