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Installation of 20 mm standard size aileron servos
If you decided to use the standard size servos, you will use the flat
frame from 6mm plywood. Grind a recess for the servo horn as
shown on the photo. Then insert the M3 blind nuts and glue the
frame on to the skin.
Note: Sand the skin surface thoroughly with coarse sand paper and
use a little playdow (or similar) to fill the threads of the blind
nuts. Use a good 30 min epoxy or thickened laminating resin to
glue the frame in place. Trial fit with the servo to make sure it fits
the recess without binding and the servo horn aligns with the
control horn.
Once the frame is glued, fit the servo, use a dot of clear silicone
to help secure the servo in the frame (you will always be able to
remove the servo with moderate force). Then screw the metal
frame on with the M3 x 10 allen screws. Be very careful and use
washer if necessary so that the screws do not show through at the
outside of the top wing skin.
To mount the servo hatches use the 1.9 x 10 mm sheet metal
screws. The linkage is identical to the version with the 16mm
servos. Use Loctite or CA glue to secure the clevises on the
threaded rod.
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