Great Planes Z526 Zlin Akrobat GP/EP ARF - GPMA1024 - Manual (Page 9)

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o 10 . Find the pre-drilled holes at each corner of each servo
bay cover . Use a T-pin to poke holes though the covering and
fit each servo bay cover to its wing . Use a 1/16" [1 .6mm] drill
bit to drill four holes to attach the aileron servo bay covers
to the wing .
o 11 . Locate eight #2 x 3/8" [9 .5mm] sheet-metal screws
and eight #2 flat washers . Thread these into the holes you
drilled . Remove the screws and the servo bay covers and
harden the screw holes with thin CA .
o 12 . Reinstall the aileron servo bay covers using the #2
screws and washers .
o o 13 . Working with one wing now, make a mark using
a felt-tip pen directly behind the aileron servo arm . Use a
builder’s triangle or builder’s square to ensure that you mark
directly behind the servo arm .
POSITION THE HORN
SO THAT THE HOLES
ARE DIRECTLY ABOVE
THE HINGE LINE.
o o 14 . Locate one nylon control horn . Discard the
backing plate that is attached to it . Center the horn along
the line you made . Center the horn fore and aft so that the
holes are directly above the hinge line (see sketch above) .
Use a 1/16" [1 .6mm] drill to drill two 1/2" [13mm] deep holes
for the control horn .
Note: Do not drill through the aileron
completely . You may wrap a piece of masking tape around
the drill bit 1/2" [13mm] from the tip to act as a drill stop .