7.10.1 – 3 Start building the flaps

Still on a high from finishing the main wing structure and ailerons last week I couldn’t wait to get started on the last major assembly of the wing kit, the flaps. First I found the spars, deburred the edges and the lightening holes. Then I found the 12 ribs and deburred those two. Then cleco’d the whole assembly together.

Next the instructions say to match drill the ribs to the spar but there is too much movement there to get an accurate drill. I decided to cleco both bottom and top skins in place so they would hold the ribs firmly in place while I drilled. All this effort is to try and reduce/prevent twist in the flaps. The problem is the top skin curls over and blocks the top holes in the ribs. I got over this little problem by using my angle drill with the smallest possible bit.

Once that was done I removed the top skin and called it a night.

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