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Date:  3-9-2019
Number of Hours:  1.50
Manual Reference:  
Brief Description:  Aileron & flap continued

Well, The process we used on the left control surfaces did not seem to work as well on the right ones. We used foam to fill the outer rib sections to fill in the open area. We used epoxy as a cover film over the foam with Dacron instead of fiberglass. This time the cold weather played havoc with the epoxy. It did not cure properly and remained tacky after a week. So, I removed it all and decided to use balsa as a filler in its place.

Cutting and shaping the balsa is an easy process. It's soft, light (lighter than the Dacron/foam combination) and shapes easily. After weighing the balsa and knowing the amount of spotting compound that will be used we will be within a few grams of weight difference between left and right. Once the epoxy cures overnight, I can finish the flap and get back to the aileron as planned. There is still a lot of sanding to be done before can get to shellacking this wing.
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Foam removed, ready to clean up and fit Balsa

Foam removed, ready to clean up and fit Balsa

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Balsa sections being shaed to fit inside of rib.

Balsa sections being shaed to fit inside of rib.

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Epoxied in place. Balso will be cut flush with th erib and finished smooth.

Epoxied in place. Balso will be cut flush with th erib and finished smooth.

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