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Step 4. Mix 1 ounce of 30-minute epoxy. Using a syringe or
toothpick, place a sufficient amount of epoxy in each of the hinge
pockets in one aileron half.
Step 5. Carefully insert the aileron on the wing, making sure
the hinges are inserted into their respective hinge pockets. Press
the aileron and wing together such that less than 1/64" hinge
line gap exists between the aileron and wing. The bevels should
virtually touch. Using a paper towel and rubbing alcohol, wipe
away any visible epoxy around the hinges.
Step 6. Double-check the hinge gap and secure the aileron
using masking tape. Allow the epoxy to fully cure for at least
six hours. Repeat Steps 1 through 6 for the other wing half.
14
Step 7. When the epoxy has fully cured, move each control
surface throughout its travel range several times to break away
any epoxy in the hinge. Be sure to deflect the surface fully.
FAST FACTS: Sealing the Hinge Gaps It's vital that the
aileron and elevator hinge lines be sealed airtight to prevent flutter.
Sealing the hinge line has several advantages. A sealed hinge line
gives a greater control response for a given control deflection.
It also offers more precise, consistent control responses and
makes trimming easier.
Caution: Sealing the aileron and elevator hinge line is
mandatory. Failure to do so may cause control surface
flutter, resulting in a crash.
Step 8. Locate two pieces of Midnight Blue UltraCote
for sealing the ailerons to approximately 3" x 36". Fold both
pieces of UltraCote down the center with the adhesive side
to the outside, making a sharp crease at the fold.
Step 6 photo
®
(included)
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