E-flite RV-9 450 ARF - Manual (Page 6)

6 E-flite RV-9 450 Assembly Manual
Use rubbing alcohol and a paper towel to remove
the line drawn on the bottom of the aileron
before installing the control horn permanently.
 8. Use medium grit sandpaper to roughen the
surface of the control horn that will fit against the
elevator. Use rubbing alcohol and a paper towel
to remove any residue to provide the best possible
bond between the control horn and bare wood.
 9. Apply a small amount of thick CA to the base
of the control horn. Insert the control horn in the
pre-drilled holes of the elevator as shown. Press the
control horn tight against the elevator.
 10. Apply 2–3 drops of thin CA to each of the
control horn posts from the top of the control horn.
Make sure to apply the CA as close to the control
surface as possible while holding the control horn
tight against the elevator.
 11. Before sliding the control horn backplate, make
sure the CA has fully cured or it may not slide tight
against the top of the stabilizer. After sliding the
backplate into position, apply 2–3 drops of thin CA
to each of the control horn posts as they protrude
through the backplate.
The control horn and backplate must be tight against
the control surface or there will be play between
the servo and surface. Use care when installing the
control horn to make sure it is done correctly.